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Capital Weather Gang: August, 2012

Posted at 04:39 PM ET, 08/31/2012

PM Update: Heat fades, rain chances ramp up over holiday weekend

Meteorological summer went out in sweltering fashion as highs surged into the mid- to even upper 90s. As September begins, the mercury trends downwards, but tropical moisture increases. Saturday’s still hot with just small rain chances. But odds of rain increase Sunday and Monday as temperature drop back into the 80s. Yes, Isaac’s moisture has a lot to do with this.

By Jason Samenow  |  04:39 PM ET, 08/31/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:38 PM ET, 08/31/2012

A red hot close to meteorological summer in the Washington, D.C. area (PHOTO)

What a long, hot summer it has been in the Washington, D.C. area. It was only fitting that on meteorological summer’s final day, a gradient of red shades filled the morning sky to presage the record matching 28th 95+ day.

By Jason Samenow  |  03:38 PM ET, 08/31/2012 |  Permalink  |  Comments ( 0)

Posted at 02:25 PM ET, 08/31/2012

Washington, D.C. ties record for most 95 degree or hotter days

At 2 p.m., the mercury met the 95-degree threshold for the 28th time this year in Washington, D.C., matching the record for the most such days set in 1980.

By Jason Samenow  |  02:25 PM ET, 08/31/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Local Climate, Extreme Heat

Posted at 11:57 AM ET, 08/31/2012

Storms Kirk and Leslie swirl in one of most active Atlantic hurricane seasons on record

As Isaac slowly decays over the U.S. continental interior, two freshly named systems are spinning up during the Atlantic’s second most active hurricane season to date on record.

By Brian McNoldy  |  11:57 AM ET, 08/31/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 10:12 AM ET, 08/31/2012

Blue moon: one small mistake, giant folklore for the sky

If you call old friends only once in a blue moon, start dialing: Today is the last such event until 2015.

By Blaine Friedlander  |  10:12 AM ET, 08/31/2012 |  Permalink  |  Comments ( 0)
Categories:  Astronomy, Latest, Space

Posted at 05:00 AM ET, 08/31/2012

D.C. area forecast: August heat to be replaced by September showers and humidity

Get outdoors and to the beach during the first-half of the holiday weekend, while the getting is good! We have heat for a couple days, and that is to be swapped-out with more mugginess by Sunday and into next week. Isaac’s remains make themselves known with higher humidity, but it isn’t until those clouds and showers really start encroaching on our area Sunday (more so after?) that we get a break from summer-certified heat in the 90s.

By A. Camden Walker  |  05:00 AM ET, 08/31/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/31/2012

Nationals vs. Cardinals weather forecast: Do birds like warm baseball?

Little in the way of weather worries. Just stay as cool as possible. It’ll be a warm one!

By A. Camden Walker  |  04:55 AM ET, 08/31/2012 |  Permalink  |  Comments ( 0)
Categories:  NatCast

Posted at 05:53 PM ET, 08/30/2012

PM Update: Return of heat to close out work week

It was a slightly toasty late August day, but we’ve had it worse. Highs reached the upper 80s with humidity in the moderate range. Following a pleasant evening, it turns hot tomorrow not to mention Saturday, with the entire region back into the 90s.

By Jason Samenow  |  05:53 PM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:35 PM ET, 08/30/2012

Will Hurricane Isaac’s remnants rain on D.C. over Labor Day weekend?

Some of Isaac’s moisture might reach the D.C. area late Sunday and into Monday.

By Jason Samenow  |  02:35 PM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 01:07 PM ET, 08/30/2012

Watch: Nick Kosir pieces together a weather rap

Rapping weatherman Nick Kosir’s latest rap. Watch.

By Jason Samenow  |  01:07 PM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Humor, Media, Humor

Posted at 12:32 PM ET, 08/30/2012

Pa. native Erica Grow to join WUSA weather team

Meteorologist Erica Grow, who grew up in Bethlehem, Pa, will join Topper Shutt, Howard Bernstein and Anny Hong as part of WUSA9’s weather team this September.

By Jason Samenow  |  12:32 PM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Media

Posted at 11:01 AM ET, 08/30/2012

Hurricane Isaac by the numbers

Isaac came ashore a category 1 storm, but its toll on the northern Gulf coast has exceeded what one might expect from a “low-end” hurricane. Its large size helped it spread vast quantities of water ashore - both from the ocean and the sky.

By Jason Samenow  |  11:01 AM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/30/2012

D.C. area forecast: A worry-free day of sun and warmth, late holiday weekend showers likely

Enjoy today because tomorrow we turn on the afterburners as mid-90s pay us a visit. I think the “blue moon” tomorrow night should be more aptly named a red one. The heat makes for an authentic send off to the last weekend of summer, at least by some measure. The only problem comes from whatever is left of Isaac which could arrive here as early as Sunday.

By David Streit  |  05:00 AM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/30/2012

Nationals vs. Cardinals weather forecast: Warm, but not too warm, and dry

Pleasantly warm with no rain worries make for a delightful evening, especially if the Nats can get back on a winning streak.

By David Streit  |  04:55 AM ET, 08/30/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 04:50 PM ET, 08/29/2012

PM Update: Beautiful evening ahead, then a slightly warmer Thursday

If you’re looking for an average end of August day, this one’s about as close as they come. And the good news is that average is becoming pretty pleasant as we creep toward fall! That low humidity, which kept highs in the mid-80s feeling no warmer than the actual temperature, helps lead to a brilliant evening and an open-the-windows kind of night.

By Ian Livingston  |  04:50 PM ET, 08/29/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 11:32 AM ET, 08/29/2012

Hurricane Isaac hammering New Orleans, flooding, power outages mounting (LIVE BLOG)

On the 7th anniversary of hurricane Katrina, hurricane Isaac is relentlessly pounding southeast Louisiana. Follow this live blog for the latest updates.

By Jason Samenow  |  11:32 AM ET, 08/29/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/29/2012

D.C. area forecast: Quite pleasant for now, but some heat lurks

We’ve got another strong taste of summer on the way, but first let’s enjoy some pleasant weather today and into tomorrow. Today’s low humidity and sunshine combine with temperatures rising to the mid-80s to create a mid-week winner. Warmth might tick upwards for Thursday, but the real heat looks to move in for the end of the week and beginning of the weekend. It’s possible the remnants of Isaac might want to intrude on the area at some point as well, but that’s a pretty tricky call for now.

By Ian Livingston  |  05:00 AM ET, 08/29/2012 |  Permalink  |  Comments ( 0)

Posted at 04:59 AM ET, 08/29/2012

United vs. Red Bulls weather forecast: Late-summer perfection

There’s a lot to like about this evening. Actually, with temperate conditions and no precip threat, it’s near perfect. Let’s top it off with a win!

By Ian Livingston  |  04:59 AM ET, 08/29/2012 |  Permalink  |  Comments ( 0)
Categories:  UnitedCast

Posted at 09:25 PM ET, 08/28/2012

Hurricane Isaac battering southeast Louisiana, northern Gulf Coast

Conditions are deteriorating along the northern Gulf Coast as Hurricane Isaac - packing sustained winds to 80 mph - draws closer. Its forward speed has slowed, meaning landfall may not occur until late tonight or even Wednesday.

By Jason Samenow  |  09:25 PM ET, 08/28/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:21 PM ET, 08/28/2012

PM Update: Great weather both tonight and Wednesday

It was a muggy, sometimes showery morning but then a cold front booted the humidity out of town. Dew points have fallen into the pleasant 50s even as sunshine lifted temperatures to near 90 this afternoon. But we fall back into the 60s tonight and tomorrow it’s just about perfect.

By Jason Samenow  |  05:21 PM ET, 08/28/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 12:08 PM ET, 08/28/2012

Isaac reaches hurricane strength, approaching landfall in SE Louisiana

Follow our live blog for the latest updates on hurricane Isaac through landfall.

By Jason Samenow  |  12:08 PM ET, 08/28/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 11:14 AM ET, 08/28/2012

Isaac nearly a hurricane as it bears down on Louisiana, northern Gulf coast

Isaac’s landfall is expected to occur later this afternoon or this evening in southeastern Louisiana as a Category 1 hurricane

By Brian McNoldy  |  11:14 AM ET, 08/28/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 10:17 AM ET, 08/28/2012

Isaac has unusually low pressure for a tropical storm

Typically, a storm with Isaac’s low pressure would be a hurricane with 90 mph winds.

By Jason Samenow  |  10:17 AM ET, 08/28/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/28/2012

Forecast: Brief cooldown before late-week, last-minute summer heat

After a morning shower or two, we could edge close to 90 this afternoon when the sun returns. Tomorrow is the best day of the week before heat rebuilds over the area. For now low-to-mid 90s are on the agenda for Fri-Sat, but I think we could possibly see some of Isaac’s remnants edge into the area toward Sun-Mon. Confidence is still low though.

By Matt Rogers  |  05:00 AM ET, 08/28/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 05:07 PM ET, 08/27/2012

PM Update: Mild through tonight; cold front brings shower chances early Tuesday

It’s been a decent day, though perhaps one of those days that look better from the inside thanks to elevated humidity levels. Highs in the mid-and-upper 80s aren’t too far from normal, and after the weekend storminess, it’s nice to see lots of sun. We should stay dry through the remaining daylight hours, but a cold front brings a chance of rain early Tuesday morning.

By Ian Livingston  |  05:07 PM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:23 PM ET, 08/27/2012

Isaac - a serious storm - but no hurricane Katrina

While residents of New Orleans should be taking Isaac very seriously and preparing for hurricane conditions, it’s unlikely to affect the area as severely.

By Jason Samenow  |  04:23 PM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 01:25 PM ET, 08/27/2012

Tropical storm Isaac’s final landfall set for Tuesday evening as hurricane

Tropical storm Isaac is headed towards the northern Gulf Coast where it has the potential to produce destructive winds, a dangerous storm surge and flooding rains.

By Brian McNoldy  |  01:25 PM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 10:30 AM ET, 08/27/2012

Hurricane chasing: While most run from the storm, iCyclone seeks out its core

Sane people run away from major hurricanes. Josh Morgerman of iCyclone craves them and tries to find his way to their worst whenever he can. Since beginning to consistently hunt hurricanes in 2005, Morgerman has intercepted some of the Atlantic Ocean’s strongest storms on record. CWG asked him what it’s like to chase these beasts of weather.

By Ian Livingston  |  10:30 AM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Tropical Weather, Latest

Posted at 09:30 AM ET, 08/27/2012

Buckets of rain douse Chesapeake Bay and Delmarva; a waterspout in Charles county

Heavy rainfall also fell along I-95 over the weekend, dousing the Chesapeake Bay and Delmarva.

By Jason Samenow  |  09:30 AM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Local Climate, Thunderstorms, Floods

Posted at 08:50 AM ET, 08/27/2012

Tropical storm Isaac inches towards hurricane strength, all eyes on New Orleans

Tropical storm Isaac appears slightly better organized this morning and is on the cusp of becoming a hurricane. Track forecasts for Isaac’s landfall, ominously, have converged around New Orleans.

By Jason Samenow  |  08:50 AM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/27/2012

D.C. area forecast: Chance of storms today and Tuesday, then mostly tranquil

The area of low pressure that snuck up us on over the weekend and socked us with rain fades away today. But a cold front quickly follows, bringing a small chance of some more showers late today into Tuesday. Then it’s dry until perhaps the weekend, when what remains of Isaac might give us some more rain.

By Jason Samenow  |  05:00 AM ET, 08/27/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 12:42 PM ET, 08/26/2012

Isaac to become a hurricane as it moves into the Gulf of Mexico; watches and warnings expanded

Tropical Storm Isaac continues to strengthen as it prepares to cross the Florida Keys on its way into the Gulf of Mexico. The environment ahead is quite favorable for further intensification before landfall on the northern Gulf coast in a few days.

By Brian McNoldy  |  12:42 PM ET, 08/26/2012 |  Permalink  |  Comments ( 0)

Posted at 05:00 AM ET, 08/26/2012

Forecast: Muggy and gray. A welcome overstayed?

We are still stuck with our small, atmospheric swirl, over the region. It is this disturbance that’s giving us clouds and periodic rains. Though it isn’t in a hurry, it eventually gets kicked out by our next cold front, so that our work week begins with just a bit more sunshine. By mid-week we should have a better idea how much Isaac-associated rain is enhanced and/or blocked by our cold front, as the cyclone approaches landfall in the Gulf. If you want more rain, you’ll want to root for our work week cold front to slow and/or stall near our area.

By A. Camden Walker  |  05:00 AM ET, 08/26/2012 |  Permalink  |  Comments ( 0)

Posted at 05:00 AM ET, 08/25/2012

D.C. area forecast: A weekend for the clouds, with some needed rain mixed in

A compact system is promising a fairly cloudy and cooler than normal weekend, as well as a few forecasting headaches. The size of the disturbance means its footprint is smaller than many, and as is often the case, the D.C. area might be livin’ on the edge. The short story is: odds of more significant rain probably go up the further east you are, but that’s not necessarily a given and everyone should get a little wet. Other than that, don’t plan on seeing a lot of sun till at least Monday.

By Ian Livingston  |  05:00 AM ET, 08/25/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:30 PM ET, 08/24/2012

PM Update: A shower possible this evening; weekend looking wetter

Clouds have moved into the area, but mild temperatures remained entrenched for today, with highs reaching the mid-and-upper 80s. While gray skies may harbor a few pop up showers into the evening, there shouldn’t be much coverage with most staying dry. And with what initially seemed like a fairly sunny weekend now much cloudier and featuring rain chances, let’s focus on the cooler temperatures, plus the fact we still need more of that liquid gold.

By Ian Livingston  |  04:30 PM ET, 08/24/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:00 PM ET, 08/24/2012

Andrew Anniversary Part II: Andrew’s winds hit National Hurricane Center

This is part 2 of a two-part series looking back at Hurricane Andrew 20 years ago.

By Jack Williams  |  02:00 PM ET, 08/24/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 12:30 PM ET, 08/24/2012

Tropical Storm Isaac stronger, set to cross Haiti and Cuba on path to U.S.

Isaac now has maximum sustained winds of 60 mph as it churns to the south of Hispaniola. The storm is on a course to the west northwest and should cross over parts of Haiti while heading toward Cuba. While Isaac is expected to hit the United States, much uncertainty remains about its eventual strength.

By Brian McNoldy  |  12:30 PM ET, 08/24/2012 |  Permalink  |  Comments ( 0)
Categories:  Tropical Weather, Latest

Posted at 10:15 AM ET, 08/24/2012

As Isaac threatens the RNC, a look at how far hurricane forecasting has come

There’s no way to know exactly if or where Isaac will ultimately make landfall in the United States or how strong it will be. Even a close call in Florida could result in flight cancellations, heavy rains, and other complications for the Republican National Convention. The good news is that forecasters now have a wealth of tools and an array of knowledge at their disposal that were almost unimaginable 40 years ago.

By Robert Henson  |  10:15 AM ET, 08/24/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather, Science, Technology

Posted at 05:00 AM ET, 08/24/2012

D.C. area forecast: August warmth goes easy on the humidity, for now; weekend showers?

While yesterday and today’s highs in the upper 80s to near 90 are a reminder it’s still August, the air is more than tolerable thanks to comfortable humidity. Even with more clouds and a chance of showers this weekend, we should still be able to enjoy some time outdoors. Our gardens, of course, will enjoy any showers they can get. Meanwhile we’ve all gotten good at dodging the pop-ups, right?

By A. Camden Walker  |  05:00 AM ET, 08/24/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:30 PM ET, 08/23/2012

PM Update: Warmth with comfortable humidity continues

We were just a touch warmer today than the past few. But upper 80s with not too much humidity is not too shabby at all. While the Southeast and Gulf coasts continue to watch Tropical Storm Isaac, our weather here in the D.C. area presents few worries for the immediate future.

By Capital Weather Gang  |  04:30 PM ET, 08/23/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:15 PM ET, 08/23/2012

Twenty years ago, soon-to-be Hurricane Andrew survived a near-death experience

What happened to 1992‘s first named storm?

By Jack Williams  |  02:15 PM ET, 08/23/2012 |  Permalink  |  Comments ( 0)
Categories:  Capital Weather Gang, History, Tropical Weather

Posted at 12:15 PM ET, 08/23/2012

Isaac weaker, but expected to become hurricane tomorrow

Since yesterday, Isaac has weakened a little, and as of 11 a.m. EDT today, has 40 mph sustained winds. The center is located about 200 miles south of Puerto Rico, but tropical storm-force winds extend out to 140 miles from the center. Conditions in southern Florida will turn for the worse on Sunday and the worst of the weather will be on Monday.

By Brian McNoldy  |  12:15 PM ET, 08/23/2012 |  Permalink  |  Comments ( 0)
Categories:  Tropical Weather, Latest

Posted at 09:45 AM ET, 08/23/2012

All Shook Up!... One year later, a look back at the August 23, 2011 East Coast earthquake

One year ago, a 5.8 magnitude earthquake centered near Mineral, Va., about 80 miles southwest of Washington, caused damage in D.C. and was felt from southeast Canada to Florida, and from the East Coast westward to the Mississippi River.

By Don Lipman  |  09:45 AM ET, 08/23/2012 |  Permalink  |  Comments ( 0)
Categories:  Lipman, Latest, Environment

Posted at 05:00 AM ET, 08/23/2012

D.C. area forecast: Lots of sunshine, and increased warmth

After a five day stretch featuring no above average temperatures, the first such occurrence since early June, we should be looking at a return of above average readings starting today. But, compared to much of the summer, these above average days won’t be terribly notable in their heat or humidity. It’s more or less a good reminder that there’s still a bit of summer left. I wish I had some rainy news to share, as we could still use more despite recent hit and miss deluges, but the main story for now is sunshine and lots of it.

By Ian Livingston  |  05:00 AM ET, 08/23/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:30 PM ET, 08/22/2012

PM Update: Chance of showers into evening; slightly warmer on Thursday

Our string of nicer temperatures continued today as highs mainly reach the mid-80s. Some building clouds this afternoon are a sign that we might again deal with hit-or-miss showers or t’showers in a few spots heading into the evening. Most places should stay dry, but keep in mind these little cells have been packing a rain punch, so you might not want to be umbrella-less if a solid one hits!

By Ian Livingston  |  04:30 PM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:40 PM ET, 08/22/2012

All eyes on Isaac as it enters the Caribbean Sea; RNC impacts?

At 2 p.m. EDT, Isaac’s maximum sustained winds were still near 45 mph. Tropical-storm-force winds extended up to 60 miles from the storm center with Isaac racing westward at 21 mph, ready to move through the Leeward Islands during the next several hours. This is a case where anyone in the U.S . between the north-central Gulf coast clear over to the Carolinas should be paying very close attention.

By Brian McNoldy  |  02:40 PM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 12:30 PM ET, 08/22/2012

Mars weather: Curiosity rover measures out-of-this-world temperature swings

We’ve seen our fair share of extreme weather here on Earth these past few years. Yet when it comes to temperatures at least, Mars is far more volatile, as seen in the latest weather report from NASA’s Curiosity rover.

By Dan Stillman  |  12:30 PM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Astronomy, Space

Posted at 10:30 AM ET, 08/22/2012

Stationary storm over Nationals Park

The storm Tuesday evening developed over Alexandria and Washington seemed to remain almost stationary. The storm ultimately produced a 51-minute rain delay at Nationals Park while most areas stayed dry. Despite the rain, the Nationals beat the Braves.

By Kevin Ambrose  |  10:30 AM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  Thunderstorms, Photography, Latest

Posted at 05:00 AM ET, 08/22/2012

D.C. area forecast: High heat and humidity still M.I.A.

After hitting the mid-to-upper 90s on 5 out of the first 6 days of the month, August has settled down nicely with only 2 days in the mid-90s since Aug. 7. During this time, Mother Nature has even treated us to several stretches of lower humidity. Both the heat and the humidity remain muted over the next several days with no major heat on the immediate horizon. No major storms, either.

By Dan Stillman  |  05:00 AM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/22/2012

Nationals vs. Braves weather forecast: Shower early? Maybe, but otherwise nice.

If there is a shower, it would likely be early in the game and shouldn’t last long. Overall this is pretty good weather considering how hot and humid it could be this time of year.

By Dan Stillman  |  04:55 AM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 04:50 AM ET, 08/22/2012

United vs. Fire weather forecast: Not too hot, not too humid. Early shower?

Can’t rule out a passing shower early. But otherwise you can’t ask for much better conditions in August. Not too hot and not too humid.

By Dan Stillman  |  04:50 AM ET, 08/22/2012 |  Permalink  |  Comments ( 0)
Categories:  UnitedCast, Latest

Posted at 07:27 PM ET, 08/21/2012

Tropical storm Isaac forms, forecast to become hurricane; could strike Florida or Gulf Coast

As expected, tropical storm Isaac has formed in the tropical Atlantic, about 500 miles east of Guadeloupe in the Lesser Antilles. The storm is expected to intensify into a hurricane Thursday or Friday in the Caribbean.

By Jason Samenow  |  07:27 PM ET, 08/21/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:22 PM ET, 08/21/2012

PM Update: An evening storm or two, then start of warm, dry stretch

While the tropics are hot, we’ve likely started a period of tranquil weather in the D.C. area.

By Jason Samenow  |  05:22 PM ET, 08/21/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:35 PM ET, 08/21/2012

Bush Administration 2012 climate emissions goal met

Ten years later, it appears that the Bush Administration’s goal to reduce greenhouse gas “intensity” by 18 percent has been met.

By Jason Samenow  |  03:35 PM ET, 08/21/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Climate Change

Posted at 11:29 AM ET, 08/21/2012

Tropical depression 9 forms, tropical storm Isaac likely soon; warnings for eastern Caribbean

Tropical depression 9 is likely to become tropical storm Isaac later today and perhaps a hurricane within two days. It poses a near-term landfall threat in the northern Caribbean and potentially the U.S. Gulf and/or Atlantic coasts early next week.

By Brian McNoldy  |  11:29 AM ET, 08/21/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/21/2012

Forecast: Some clouds, some sun, some showers; nice weekend still ahead

This seemingly perpetual frontal boundary in the Southeast continues to feed occasional cloud cover and moisture our way. The pesky feature should influence our weather through at least tomorrow before more dominant high pressure takes over for Thursday. You can’t really complain about temperatures with highs in the 80s expected into the weekend.

By Matt Rogers  |  05:00 AM ET, 08/21/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/21/2012

NatCast: Scattered showers and storms; comfortable temperatures

More scattered evening showers and storms could offer some delays, but no washout rainout is expected. Temperatures are comfortable.

By Matt Rogers  |  04:55 AM ET, 08/21/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 04:37 PM ET, 08/20/2012

PM Update: Chance of evening storms today and tomorrow; otherwise tranquil, warm

Morning low clouds and fog gradually eroded today. Enough sunshine broke through for most of us to hit 80 degrees or so. Showers and storms are possible this evening as a disturbance swings through the region. This sequence of events repeats tomorrow with a pleasant enough summer day before a possible round of late day showers/storms.

By Jason Samenow  |  04:37 PM ET, 08/20/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:46 PM ET, 08/20/2012

Could hurricane wreak havoc at Republican convention? Will it be Isaac?

For three straight simulations, NOAA’s Global Forecast System (GFS) model has tracked a tropical system right over the Florida peninsula through or close to Tampa just as the Republican National Convention is ramping up. Assuming this system - presently a little swirl in the open Atlantic - strengthens some, it will be named Isaac.

By Jason Samenow  |  02:46 PM ET, 08/20/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 11:15 AM ET, 08/20/2012

Very active tropical Atlantic as we enter peak of hurricane season; Isaac next?

As one-time hurricane Gordon and one-time tropical storm Helene move out of the picture, three other disturbances are brewing in the tropical Atlantic. One them, known as AL94, needs to be carefully monitored as it could threaten the U.S. coast.

By Brian McNoldy  |  11:15 AM ET, 08/20/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/20/2012

D.C. area forecast: Chance of a few showers and cool early in week, then drier, warmer

70s sure beat the 90s and needed rain is at least a small possibility to start the week. Then we transition into more of seasonably warm, dry pattern for the week’s second half, with temperatures well into the 80s. All-in-all, it’s tranquil week with little chance of extreme weather (big storms or stifling heat).

By Jason Samenow  |  05:00 AM ET, 08/20/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/20/2012

Nationals vs. Braves weather forecast: Small chance of showers

Temperatures are just right in the low-to-mid 70s. There’s a slight chance of showers, but unlikely to cause anything more than a brief delay.

By Jason Samenow  |  04:55 AM ET, 08/20/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 05:00 AM ET, 08/19/2012

D.C. area forecast: Increasing clouds and shower chances

We aren’t looking at any drought busting area-wide heavy rain events in the near-term, but a stalled frontal boundary provides a focus for shower development through much the next few days. That begins this afternoon and continues through midweek. On the bright side, an upper level low pressure system parked in and around the area promises to keep us in this break from the heat, with highs mainly near 80 to the mid-80s in days ahead.

By Brian Jackson  |  05:00 AM ET, 08/19/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/19/2012

Nationals vs. Mets weather forecast: Mostly cloudy and mild

Comfy temps at the park today, and the sun should stay shielded by clouds for the most part. Some showers are possible as the game goes on, but shouldn’t have much of an impact.

By Brian Jackson  |  04:55 AM ET, 08/19/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 04:50 AM ET, 08/19/2012

United vs. Union weather forecast: Scattered showers possible

It’d be perfect weather on the pitch if it weren’t for the shower chance. Still they’re light and scattered, so get out and chant!

By Brian Jackson  |  04:50 AM ET, 08/19/2012 |  Permalink  |  Comments ( 0)
Categories:  UnitedCast, Latest

Posted at 05:00 AM ET, 08/18/2012

D.C. area forecast: A mostly delightful weekend

With our avoidance of a record-tying 28th day 95 degrees or higher yesterday, we don’t have anything close to that on the horizon, and historical odds for more are quickly dwindling. I doubt many people are sad about that! In fact, there’s not much to be annoyed with looking at our weather to come, as we get a nice taste of cooler temperatures and perhaps a little bit of that much-needed rain. Let’s start with a largely worry-free weekend.

By Ian Livingston  |  05:00 AM ET, 08/18/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/18/2012

Nationals vs. Mets weather forecast: A hint of fall in the air

A soft breeze, somewhat cool (compared to lately!) temperatures, and falling humidity levels. Sounds like a superb Saturday evening.

By Ian Livingston  |  04:55 AM ET, 08/18/2012 |  Permalink  |  Comments ( 0)
Categories:  NatCast

Posted at 05:17 PM ET, 08/17/2012

PM Update: Evening thundershowers push out heat; balance of weekend decent

A cold front sweeping through the region puts an end to 90-degree temperatures for a while. Showers and storms are likely tonight and will be followed by pleasant temperatures over the weekend. We’re not totally in the clear though as nearby disturbances keep clouds around and offer a slight chance of showers both days.

By Jason Samenow  |  05:17 PM ET, 08/17/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:15 PM ET, 08/17/2012

Warmth hobbles Greenland flights

Greenland’s warmth this year has affected flight operations in and out since April.

By Jack Williams  |  02:15 PM ET, 08/17/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Climate Change, International Weather

Posted at 12:36 PM ET, 08/17/2012

NOAA favors warm winter for Washington, D.C., noncommittal on snow

NOAA is noncommittal on its prediction for snow this winter in the Washington region.

By Jason Samenow  |  12:36 PM ET, 08/17/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Local Climate

Posted at 11:51 AM ET, 08/17/2012

The U.S. Navy FLIP: a radical ship for ocean-atmosphere research

Imagine while cruising on a friend’s yacht somewhere in the eastern Pacific you catch sight of what appears to be the sinking of a large ship: the bow (front) begins to rise above the waves and stern (back) starts to sink below. Just 30 or so minutes later you are astonished to see the bow section standing vertical some 5-stories above the sea surface and not sinking any further.

By Steve Tracton  |  11:51 AM ET, 08/17/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Science, Tracton

Posted at 05:00 AM ET, 08/17/2012

D.C. area forecast: Hot today with late-day storm chance; cooler weekend even if a bit unsettled

After today’s heat, heavy rain could kick up late this afternoon. But a cooler weekend is ahead.

By Camden Walker  |  05:00 AM ET, 08/17/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/17/2012

Nationals vs Mets weather forecast: At least a 50/50 chance that rain interferes

Rain gear may be advisable in case there’s a storm. Seek shelter if you see lightning or hear thunder. Otherwise, it’s on the warm side so stay cool.

By Camden Walker  |  04:55 AM ET, 08/17/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 04:25 PM ET, 08/16/2012

PM Update: Tranquil Thursday evening; very warm with chance of storms late Friday

Humidity was delightfully low today, but no shortage of sunshine helped us log our 47th 90+ day of 2012. We likely tack on number 48 Friday before scattered showers and storms arrive in the early evening hours.

By Jason Samenow  |  04:25 PM ET, 08/16/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:51 PM ET, 08/16/2012

Final update on the “big swim” across Lake Michigan

Neil and Sara Tow, the former local couple who’ve trained for the past year to make an epic swim across Lake Michigan, made a heroic effort, but unfortunately, fell about 10 miles short.

By Don Lipman  |  02:51 PM ET, 08/16/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, U.S. Weather

Posted at 02:15 PM ET, 08/16/2012

Tropical storm Gordon may become hurricane, no threat to U.S.; Greg Postel to the Weather Channel

The tropical Atlantic got its 7th named storm of the 2012 season this morning. Gordon developed over the open Atlantic and has intensified into a 50 mph tropical storm. As of 11 a.m. it was 640 miles east of Bermuda, heading northeast at 16 mph.

By Jason Samenow  |  02:15 PM ET, 08/16/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather, Capital Weather Gang

Posted at 11:43 AM ET, 08/16/2012

Should Reagan National Airport remain Washington, D.C.’s official weather station?

The debate has raged for decades: Does it make sense to observe D.C. weather at Reagan National?

By Jason Samenow  |  11:43 AM ET, 08/16/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Local Climate, Government

Posted at 09:55 AM ET, 08/16/2012

Kai-tak (Helen) intensifies to typhoon, likely to make landfall south of Hong Kong

Kai-tak has been upgraded to a typhoon, with maximum sustained winds of around 75 mph. The track forecast has shifted the expected landfall to the south and west, steering the brunt of the storm south of Hong Kong in western Guangdong.

By Jason Samenow  |  09:55 AM ET, 08/16/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/16/2012

Forecast: Another warm day but dry air is comfy, much cooler weekend ahead

I am betting that most of us find today just dandy given the drier air mass. After this summer a 90-degree day just isn’t what it used to be.After a few thunderstorms skitter through Friday night, we are in for not 1, not 2 but 3, count them 3 days of highs only in the lower 80s and we will throw in lows in the 60s. However, some showers may put a damper on the cooler temps.

By David Streit  |  05:00 AM ET, 08/16/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:30 PM ET, 08/15/2012

PM Update: Slight chance of rain into evening; Thursday brings warm sunshine

With the cold front to our east, we’ve been graced with somewhat cooler air today and highs only in the 80s everywhere! Some clouds have helped dampen that late-summer sun as well. A little disturbance pushing through the region has set off some showers and storms, mainly north, south and west of us, but we may still see a few yet before the day is done.

By Ian Livingston  |  04:30 PM ET, 08/15/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:05 PM ET, 08/15/2012

Watch: Chinese broadcaster covers typhoon Haikui tied to rope

Covering a landfalling hurricane or typhoon can be hazardous. One Chinese TV station decided it wasn’t going to take any chances. Lest its reporter be swept away, it secured her to a rope as she covered the landfall of typhoon Haikui live in Ningbo.

By Jason Samenow  |  04:05 PM ET, 08/15/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Humor, International Weather

Posted at 12:25 PM ET, 08/15/2012

Accuweather: Big snows for Washington, D.C., Philadelphia and New York next winter

After last year’s virtual snow shutout, Accuweather expects some areas will get walloped.

By Jason Samenow  |  12:25 PM ET, 08/15/2012 |  Permalink  |  Comments ( 0)

Posted at 10:01 AM ET, 08/15/2012

Update on the “big swim” across Lake Michigan by a “local” couple

Recently, I posted a story “Cool thoughts: awaiting an epic swim across Lake Michigan by “local couple”. Well, the swim is underway, water temperatures are tolerable (near 70), and the swimmers are confident.

By Don Lipman  |  10:01 AM ET, 08/15/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, U.S. Weather

Posted at 05:00 AM ET, 08/15/2012

D.C. area forecast: Storm chance lingers today with terrific Thursday on tap

So I’m having a bit of a confidence crisis with this forecast. Cold fronts are to blame, and the result is uncertain shower and storm chances pretty much every day today through the weekend, except for tomorrow which is shaping up quite nice!

By Dan Stillman  |  05:00 AM ET, 08/15/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:48 PM ET, 08/14/2012

PM Update: Chance of storms tonight and Wednesday, humid

Summer cold fronts often take their sweet time moving through the mid-Atlantic. That means advertised rain sometimes comes in later than expected and it takes longer to clear. Storms are possible this evening and overnight and - yes - well into Wednesday too. Humidity doesn’t appreciably drop until Thursday.

By Jason Samenow  |  04:48 PM ET, 08/14/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:24 PM ET, 08/14/2012

Strong to severe storm chance this evening

A slow-moving cold front is likely to produce scattered thunderstorms into the evening hours.

By Jason Samenow  |  02:24 PM ET, 08/14/2012 |  Permalink  |  Comments ( 0)

Posted at 12:45 PM ET, 08/14/2012

National Weather Service “ammunition” solicitation triggers confusion

Weather forecasting or preparing for war? The National Weather Service (NWS) seeks to buy 46,000 rounds of ammunition for semiautomatic pistols says the FedBizOpps website. But spokesman Chris Vaccaro said the ammunition is not for the National Weather Service.

By Jason Samenow  |  12:45 PM ET, 08/14/2012 |  Permalink  |  Comments ( 0)
Categories:  Government, Latest

Posted at 10:29 AM ET, 08/14/2012

The heart-warming and heart-wrenching tales of dogs in toasty weather

Very warm weather can pose hazards to dogs, but can also prove therapeutic. During the nation’s hottest month on record in July, viral stories of the trials of several canines have evoked all kinds of human emotions from inspiration to terror to anger.

By Jason Samenow  |  10:29 AM ET, 08/14/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Nature, Extreme Heat, Photography, U.S. Weather

Posted at 05:00 AM ET, 08/14/2012

Forecast: Humidity and storm chances increase today; much cooler by Sunday

Two cold fronts in three days suggest that the pattern is becoming more active. This pattern prevents big hot and humid air masses from locking in and intensifying. The first cold front this evening could produce some storms but then helps knock the humidity down Wednesday and Thursday. The second, stronger cold front Friday evening into Saturday delivers a shot of even cooler, drier air by Sunday.

By Matt Rogers  |  05:00 AM ET, 08/14/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:30 PM ET, 08/13/2012

PM Update: Tranquil tonight, with storm chances returning on Tuesday

While today’s temperatures might end up a little above normal, particularly in D.C. itself, the lower levels of humidity and a little cloudiness have made it a pretty comfortable one out there. Unlike most of the summer, there’s no big heat lurking anywhere around the corner! In fact, perhaps the opposite. But, let’s not get ahead of ourselves. After a nice evening and night tonight, we’ve got another warm one tomorrow with storm risks late.

By Ian Livingston  |  04:30 PM ET, 08/13/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:58 PM ET, 08/13/2012

Jet stream plunge to foster shot of cool air, fall sneak preview in eastern U.S. this weekend

I’m so excited by Sunday’s weather map, I’m sharing it six days ahead of time. Look at how big the simulated dip in Sunday’s jet stream is.

By Jason Samenow  |  02:58 PM ET, 08/13/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest

Posted at 01:11 PM ET, 08/13/2012

Mostly cloudy: Linking climate change to severe storms in the U.S.

When confronted with questions about links between climate change and severe storms, the answers scientists give are usually qualified, and thus seldom satisfying to those seeking a simple response. But that’s the reality, and the reasons are spelled out in great detail in a new study by many of the country’s leading climate and weather researchers.

By Jason Samenow  |  01:11 PM ET, 08/13/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Climate Change

Posted at 11:23 AM ET, 08/13/2012

Maryland severe storm shows off superb structure

The Capital Weather Gang embarked on a chase in Thurmont, Md. as severe storms began to form.

By Ian Livingston  |  11:23 AM ET, 08/13/2012 |  Permalink  |  Comments ( 0)
Categories:  Photography, Thunderstorms, Latest

Posted at 05:00 AM ET, 08/13/2012

D.C. area forecast: Warm, humid to start week but taste of September by Sunday

Are we done with excessive heat for the summer? It’s too soon to make that call, but what’s clear is that nothing too brutal lies in our immediate future. In fact, by late this coming weekend, a touch of early fall may well be in the air. Unfortunately, for those seeking rain, we just have a couple chances of scattered showers/storms this week.

By Jason Samenow  |  05:00 AM ET, 08/13/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 05:00 AM ET, 08/12/2012

D.C. area forecast: A lot to like today and tomorrow

As the saying goes, there’s always sunshine after the rain, and we’ll hold that true today once we clear out any lingering morning clouds. The lower humidity levels and near-average highs today and tomorrow are an enjoyable reprieve from this summer’s muggy heat fest. That heat remains mostly in check the next several days even though humidity and storm chances bubble back up by Tuesday.

By Brian Jackson  |  05:00 AM ET, 08/12/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 05:00 AM ET, 08/11/2012

D.C. area forecast: Cold front ushers in a brief break from high heat and humidity

In a break from the recent norm around here, today’s temperatures should not reach 90. This is thanks to a slow-moving cold front finally moving through the area. Behind it, we get a bit of a taste of cooler times to come, but it won’t be enough for many, and it won’t last as long as we’d hope. After a savory Sunday, heat and humidity come wandering back heading into the work week.

By Ian Livingston  |  05:00 AM ET, 08/11/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:24 PM ET, 08/10/2012

PM Update: Storms possible this evening, slow clearing Saturday

More storms are likely for this evening, but the rain should clear out by Saturday afternoon..

By Jason Samenow  |  04:24 PM ET, 08/10/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:17 PM ET, 08/10/2012

Yes, D.C., we still have a drought

Notwithstanding the downpours this morning, the District and a large portion of the metro region remain in moderate drought.

By Jason Samenow  |  03:17 PM ET, 08/10/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Droughts

Posted at 12:35 PM ET, 08/10/2012

An active tropical Atlantic spawns two new systems as Ernesto dissipates

After watching Ernesto for the past 10 days, we will wrap up the week with a couple of active systems in the central and eastern Atlantic. One is headed for the Lesser Antilles this weekend, and the other is just off the coast of Africa.

By Brian McNoldy*  |  12:35 PM ET, 08/10/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 11:16 AM ET, 08/10/2012

Risk of severe storms this afternoon and evening in Washington, D.C. and Baltimore

Sunshine is emerging from southwest to northeast across the metro region - potentially priming the area for a round of strong and severe thunderstorms this afternoon and evening.

By Jason Samenow  |  11:16 AM ET, 08/10/2012 |  Permalink  |  Comments ( 0)

Posted at 05:00 AM ET, 08/10/2012

D.C. area forecast: Storms with heavy rain possible throughout the day

We have an unsettled, perhaps volatile at times, day ahead as a cold front and upper-level storm system both want to create storminess across the region. We’re not expecting an area-wide damaging event, but there’s a risk for more than your average storm day in addition to potentially heavy rain. This weekend, we slowly try to give this front the boot, finally doing so by Sunday. That’s the day that looks most like a “gem.” Luckily, the return to work synchs with increased chances for storms and mugginess. Score.

By A. Camden Walker  |  05:00 AM ET, 08/10/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 05:08 PM ET, 08/09/2012

PM Update: A few storms tonight; widespread storms Friday, some may be severe

Another day, another 95 or higher afternoon temperature in Washington, D.C. Today’s 95+ reading is the 27th of 2012, tying 2010 and 1981 for 2nd place, with plenty of summer to go. The current hot streak (10 straight 90+ days) may end Friday as clouds and showers and storms hold back temperatures.

By Jason Samenow  |  05:08 PM ET, 08/09/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:53 PM ET, 08/09/2012

Lather up your weekend with the Perseid meteor shower

If you’re lucky, you’ll see a handful of meteors tonight.

By Blaine Friedlander  |  03:53 PM ET, 08/09/2012 |  Permalink  |  Comments ( 0)
Categories:  Space, Astronomy, Latest

Posted at 03:05 PM ET, 08/09/2012

Weather Channel domination: member company WSI acquires Weather Central

Weather Services International (WSI) - a Weather Channel company - has announced the acquisition of Madison, WI -based Weather Central.

By Jason Samenow  |  03:05 PM ET, 08/09/2012 |  Permalink  |  Comments ( 0)

Posted at 12:24 PM ET, 08/09/2012

NOAA increases prediction for Atlantic hurricanes; new disturbances may organize

The flurry of Atlantic tropical activity has prompted NOAA to bump up its prediction for the number of storms to expect through the end of hurricane season in November.

By Jason Samenow  |  12:24 PM ET, 08/09/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 10:21 AM ET, 08/09/2012

Severe weather and internet outages: vulnerability in the clouds?

Slashdot poses an interesting question: Could Extreme Weather Take Down the Internet?

By Jason Samenow  |  10:21 AM ET, 08/09/2012 |  Permalink  |  Comments ( 0)

Posted at 05:00 AM ET, 08/09/2012

Forecast: Hot with late day storms possible, severe storms possible Friday

If nothing else, things are going to get a lot more active in the next couple of days thunderstorm-wise. By afternoon some strong thunderstorms are possible and then they get serious on Friday afternoon when the greatest threat for severe weather lies. A break in the heat and humidity arrives over the weekend.

By David Streit  |  05:00 AM ET, 08/09/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:25 PM ET, 08/08/2012

PM Update: Slight rain chance through evening; toasty with late-day storms possible Thursday

One way to gauge how warm it’s been is how easily we keep hitting 90 or higher on days with lots of clouds. Today was another one of those occasions in D.C., and now our ninth 90+ in a row, going back to the end of last month. Looks like we’ll extend that streak to at least 10 without much problem tomorrow. After that, rain chances start to increase and temperatures hopefully decrease heading through the rest of the week.

By Ian Livingston  |  04:25 PM ET, 08/08/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 02:53 PM ET, 08/08/2012

Chart-busting 2012 temperatures in Lower 48 and Washington, D.C.

Temperatures so far this year are warmest on record locally and nationally, and it’s not even close. Year-to-date temperatures are on an entirely different level from past record-setting years.

By Jason Samenow  |  02:53 PM ET, 08/08/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Local Climate, U.S. Weather, Climate Change

Posted at 11:30 AM ET, 08/08/2012

U.S. has hottest month on record in July 2012 NOAA says

In 118 years of U.S. records, July 2012 stands as king, hotter than any month previously observed.

By Jason Samenow  |  11:30 AM ET, 08/08/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, U.S. Weather, Climate Change

Posted at 10:15 AM ET, 08/08/2012

Late-week severe weather? Thursday and Friday offer increasing odds for storminess in D.C.

A dip in the jet stream is promising increased storm chances by the end of the work week. Friday has already been outlooked by forecasters at the Storm Prediction Center as a potential severe weather day since Monday. We examine the various storm risks ahead.

By Ian Livingston  |  10:15 AM ET, 08/08/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Thunderstorms

Posted at 05:00 AM ET, 08/08/2012

D.C. area forecast: Some heat, some storms. Silver lining by Sunday?

Summer keeps on rollin’ around here with highs past 90 almost a sure bet today and tomorrow. The best shower and storm chances wait for Friday, when storns could be fierce, but that doesn’t mean we won’t see some activity before. Saturday’s forecast carries the most uncertainty of the next several days, while Sunday may well provide a spectacular end to the coming weekend.

By Dan Stillman  |  05:00 AM ET, 08/08/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 11:21 PM ET, 08/07/2012

PM Update: Lots of clouds, still very warm through Wednesday, isolated PM storms

A front stalled just far enough south to keep most of the rain away from the metro region (except southern Maryland), but not the heat. We tacked on another 90+ day, our 8th straight and 14th in the last 16 days. And yet another is on the way Wednesday, despite plenty of clouds and a slight late day storm chance.

By Jason Samenow  |  11:21 PM ET, 08/07/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:22 PM ET, 08/07/2012

Jefferson’s derecho — the video

Five weeks later, the video is recovered from a soaked camera that had stopped working.

By Kevin Ambrose  |  03:22 PM ET, 08/07/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Photography, Thunderstorms

Posted at 01:24 PM ET, 08/07/2012

Snow blankets parts of South Africa, a rare dusting in Johannesburg

Snow has fallen in Johannesburg, South Africa for the first time since 2007.

By Jason Samenow  |  01:24 PM ET, 08/07/2012 |  Permalink  |  Comments ( 0)

Posted at 12:55 PM ET, 08/07/2012

Hurricane Ernesto to hit Belize and Mexico tonight

The National Hurricane Center has upgraded Ernesto to a Category 1 hurricane

By Brian McNoldy*  |  12:55 PM ET, 08/07/2012 |  Permalink  |  Comments ( 0)
Categories:  Tropical Weather, Latest

Posted at 05:00 AM ET, 08/07/2012

Forecast: Very warm with lingering clouds and shower/storm risks into weekend

A stationary front just to our south has stalled. The result is considerable cloud cover into tomorrow along with shower and storm risks, especially south of the District. Temperatures are slightly above normal with upper 80s to low 90s while humidity remains moderate. Thursday may end up the hottest day. Friday and Saturday look wet at times before drier weather Sunday.

By Matt Rogers  |  05:00 AM ET, 08/07/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:45 PM ET, 08/06/2012

PM Update: Scorchers replaced by more typical summer heat

Clouds associated with a cold front inching south of the area have helped keep a lid on temperatures today, but we’ve still managed to rise to highs pretty close to normal in the upper 80s to near 90. Sadly, humidity levels have remained pretty high as well, and they look to stay near or above 65-70 degrees for a while at least. Tomorrow, we should ditch the clouds for the most part, and while it’ll be another warm one, it won’t be as hot as we’ve gotten used to this summer.

By Ian Livingston  |  04:45 PM ET, 08/06/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:15 PM ET, 08/06/2012

NASCAR should have stopped Pocono race sooner

A man was killed and nine others were injured Sunday during a violent thunderstorm that tore across Pocono Raceway in northeast Pennsylvania. Although track officials advised crowds to seeks shelter, NASCAR allowed cars to continue to race around the track far too long.

By Jason Samenow  |  04:15 PM ET, 08/06/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Thunderstorms, U.S. Weather

Posted at 01:28 PM ET, 08/06/2012

The NASA Curiosity rover and weather on Mars

The touchdown of NASA’s Curiosity rover was a triumphant success. So what kind of elements might the rover encounter as it explores the Martian surface?

By Jason Samenow  |  01:28 PM ET, 08/06/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Astronomy, Space

Posted at 11:56 AM ET, 08/06/2012

Tropical storm Ernesto rapidly intensifying, tracking towards Belize

The once-feeble tropical storm Ernesto is now an ominous and rapidly-intensifying storm heading for Honduras and Belize, likely as a hurricane.

By Brian McNoldy*  |  11:56 AM ET, 08/06/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 05:00 AM ET, 08/06/2012

D.C. area forecast: Front takes slight edge off heat, real relief not until weekend

The mercury climbed to 98 Sunday at Reagan National, the 40th 90+ day of the year and the 26th 95+ day. We’ll see a few more 90+ days this week, but - mercifully - probably not any at or above 95. By the weekend, the pattern may flip to one dominated more by days in the 80s. To start this transition, Friday may produce widespread storms in a week which looks dry more often than not.

By Jason Samenow  |  05:00 AM ET, 08/06/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:09 PM ET, 08/05/2012

Strong to severe storms possible into the evening; lingering showers overnight

It’s hot, it’s humid and a cold front is marching towards the region. The clash of the airmasses will trigger scattered strong to severe thunderstorms this afternoon and evening.

By Jason Samenow  |  03:09 PM ET, 08/05/2012 |  Permalink  |  Comments ( 0)

Posted at 05:00 AM ET, 08/05/2012

D.C. area forecast: Better chance of storms later today; brief break in humidity coming

While showers and storms aren’t a sure bet this afternoon, there is a decent chance of some. So the earlier the better as far as outdoor activities are concerned. Some storms could bring high winds and hail along with very heavy rain. Once a cold front clears the area sometime tomorrow, we get a bit of a break with drier and a bit cooler air early in the week before a more tropical feel takes hold once again.

By Brian Jackson  |  05:00 AM ET, 08/05/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/05/2012

Nationals vs. Marlins weather forecast: Hot and humid makes Miami feel at home

It’s hot and sticky at the park today. Showers and storms may threaten the later innings but they should get the game in.

By Brian Jackson  |  04:55 AM ET, 08/05/2012 |  Permalink  |  Comments ( 0)
Categories:  NatCast

Posted at 05:00 AM ET, 08/04/2012

D.C. area forecast: Continuing to cook through the weekend, and increasing storm chances

Yesterday D.C. tied the total for last year when it comes to days at or above 95 degrees, and those 24 instances are more than two times normal for a year around here. It’s possible we’ve got another today as well. Yep, it’s more of the same hazy sunshine giving way to isolated or scattered afternoon showers and storms. Add in high heat and humidity and you’ll probably want to limit your outdoor time during the midday, unless you’re near a pool or at the beach.

By Ian Livingston  |  05:00 AM ET, 08/04/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/04/2012

Nationals vs. Marlins weather forecast: Toasty with a bit of a storm risk

Remember last evening? This one’s quite a bit like that. At least the sun’s not an issue even if heat and humidity still are. Watch out for a roaming shower or storm.

By Ian Livingston  |  04:55 AM ET, 08/04/2012 |  Permalink  |  Comments ( 0)
Categories:  NatCast

Posted at 04:50 AM ET, 08/04/2012

United vs. Crew weather forecast: Warm and muggy with a storm possible

Toasty and humid. Keep an ear out for thunder as a storm may pop up or move into the area during the game. Still, a better chance than not to stay dry.

By Ian Livingston  |  04:50 AM ET, 08/04/2012 |  Permalink  |  Comments ( 0)
Categories:  UnitedCast

Posted at 05:20 PM ET, 08/03/2012

PM Update: Muggy with late day storm chances this weekend, especially Sunday

Another day of sweltering heat is in the books. We managed to log our 24th day at or above 95, ahead of any other year on record as of this date. The weekend weather is to closely resemble the weather of the last two days: hot, hazy, humid and with late day storm chances. The storm chances Saturday are slight but ramp up Sunday as a cold front approaches.

By Jason Samenow  |  05:20 PM ET, 08/03/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:17 PM ET, 08/03/2012

The week in clouds: atmospheric instability produces dramatic skies

Cold air high in the sky combined with toasty air near the ground gave rise to atmospheric volatility all week long. The violent mixing of the air helped build towering thunderheads which glistened and glowed in different shades against the sun’s long, setting beams of light. Throughout the region, readers captured eye-popping photographs of these sky scenes.

By Jason Samenow  |  04:17 PM ET, 08/03/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Photography

Posted at 01:57 PM ET, 08/03/2012

Tropical storm Ernesto forecast to become hurricane by Monday in Caribbean

Tropical storm Ernesto, which swept across the Windward islands, has entered the Caribbean and is forecast to strengthen gradually over the weekend. By Monday, the National Hurricane Center says, Ernesto may reach hurricane intensity.

By Jason Samenow  |  01:57 PM ET, 08/03/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 11:06 AM ET, 08/03/2012

An inside look at Greenland’s melting surface ice

Greenland’s big mid-July “melt” gave a few polar scientists a chance to study a rare warming event as it was happening. Previously they’d seen such warming only as small sections of ice cores pulled up from 165 feet below the 656,000-square-miles ice sheet that covers roughly 85% of Greenland

By Jack Williams  |  11:06 AM ET, 08/03/2012 |  Permalink  |  Comments ( 0)

Posted at 05:00 AM ET, 08/03/2012

D.C. area forecast: August oven is on, with dog day mugginess included

What may be “classic” August heat will still make us sweaty and uncomfortable at times in the days ahead. We crescendo this weekend into even more stifling humidity to accompany our 90+ temperatures. It’s possible we’ll have to wait until into next week before we get a shot -- potentially -- at some noticeable relief! The nerve. In the meantime, expect pesky thundershowers to dot our landscape.

By A. Camden Walker  |  05:00 AM ET, 08/03/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/03/2012

Nationals vs. Marlins weather forecast: Doubleheader, double humidity

Very muggy, but at least not triple digits. Still, be mindful of drinking water if you stay the entire 5-6 hours. A few thundershowers could pop nearby or virtually overhead with little warning, so take a small umbrella.

By A. Camden Walker  |  04:55 AM ET, 08/03/2012 |  Permalink  |  Comments ( 0)
Categories:  NatCast

Posted at 06:15 PM ET, 08/02/2012

PM Update: More heat, more isolated storm chances

There’s a common thread with this week’s weather: heat, humidity and hit or miss afternoon and evening showers/storms. So it’s no surprise we close out the work week with those elements in the forecast. Friday distinguishes itself, though, as the hottest day of the week so far.

By Jason Samenow  |  06:15 PM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:46 PM ET, 08/02/2012

Tropical storm Ernesto forms in the Atlantic

After more than a month hiatus, a tropical storm is alive and kicking in the Atlantic basin. The National Hurricane Center has upgraded tropical depression number 5 to tropical storm Ernesto as of late this afternoon. The storm’s maximum sustained winds are around 50 mph and gradual strengthening is forecast as it zips across the Windward islands into the Caribbean.

By Jason Samenow  |  04:46 PM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Tropical Weather

Posted at 02:57 PM ET, 08/02/2012

Twin storms Damrey and Saola near coast of China

Double trouble. Typhoon Damrey and tropical storm Saola are both making landfall in mainland China.

By Jason Samenow  |  02:57 PM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, International Weather, Tropical Weather

Posted at 12:08 PM ET, 08/02/2012

Dry conditions, drought persist in Washington, D.C. area

For the first time in over 140 years of weather records, Washington, D.C. (based on measurements at Reagan National airport) has received below average precipitation in the first seven months of the calendar year.

By Jason Samenow  |  12:08 PM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Droughts, Local Climate

Posted at 10:11 AM ET, 08/02/2012

Extreme weather and climate change: Caution required but not reckless statements

In the wake of punishing heat waves, historic droughts, extensive flooding and extraordinary melt activity on Greenland, many are asking if we are seeing long-predicted results of climate change, caused primarily by man-made heat-trapping greenhouse gas emissions. A recent opinion editorial in USA Today argues against linkages between extreme weather and climate change. There are several issues with the USA Today opinion piece that must be addressed.

By J. Marshall Shepherd and John Trostel*  |  10:11 AM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Climate Change

Posted at 05:00 AM ET, 08/02/2012

D.C. area forecast: 90s through the weekend, thunderstorm chances increase Sunday

Sadly, this overachieving summer shows little sign of relenting yet. But at least it is low-to-mid 90s through the weekend rather than 100s. And humidity levels are tolerable. For those of you trying to keep your garden from parching, thunderstorm chances increase by late in the weekend.

By David Streit  |  05:00 AM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/02/2012

Nationals vs. Phillies weather forecast: Plenty warm but only moderately humid

Heat from start to finish. Sounds like a good thing to hope for from our pitcher! You might want one of those little portable fans on this breezeless night.

By David Streit  |  04:55 AM ET, 08/02/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

Posted at 04:30 PM ET, 08/01/2012

PM Update: Shower or storm chance through evening, and turning hotter Thursday

August seems ready to pick up where July left off, with heat becoming the main story the next few days. Today’s highs in the upper 80s to near 90 weren’t too bad, though with another 90+ day at National, we’ve already met our typical average of 36 such days in an entire year. And, that’s as low as highs will be at least through Friday. A few showers and storms earlier have dissipated leaving partly cloudy skies behind, however we could see a few more rain drops yet, particularly before sunset.

By Ian Livingston  |  04:30 PM ET, 08/01/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 03:16 PM ET, 08/01/2012

Searing heat in the Heartland: Oklahoma’s hottest day ever?

July proved to be historically scorching from the eastern Rockies to the mid-Atlantic. Indianapolis, Louisville, St. Louis, Denver and Roanoke (Va.) had their hottest Julys on record. Chicago, Richmond, and Washington, D.C. had their second hottest July on record. But, in recent days, some of the most impressive heat has focused in the Sooner state.

By Jason Samenow  |  03:16 PM ET, 08/01/2012 |  Permalink  |  Comments ( 0)

Posted at 12:28 PM ET, 08/01/2012

Blue moon and Sturgeon moon in August 2012

A blue moon is kind of jazzy. It’s soothing, solid and definitely cool. In recent decades, the popular-notion, folksy people define a blue moon as the second full moon in a month.

By Blaine Friedlander  |  12:28 PM ET, 08/01/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Astronomy, Space

Posted at 10:50 AM ET, 08/01/2012

2nd hottest July on record in Washington, D.C.; warmest year-to-date on record, 5th driest

July was a hot one. In fact, it was the second hottest in the history of Washington, DC meteorological records behind only last year. The three hottest Julys on record (dating back to 1871) have occurred in the last three years.

By Matt Rogers  |  10:50 AM ET, 08/01/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, Local Climate

Posted at 05:00 AM ET, 08/01/2012

D.C. area forecast: More hit-or-miss storms today before we turn up the heat tomorrow

The overall set up with warm and humid air near the surface and low pressure aloft continues today, which also means a continuation of hit-or-miss storms that can form with little warning. That low pressure high above begins to lose its grip starting tomorrow, sending storm chances lower and temperatures higher Thursday and Friday. How about the weekend?...

By Dan Stillman  |  05:00 AM ET, 08/01/2012 |  Permalink  |  Comments ( 0)
Categories:  Forecasts

Posted at 04:55 AM ET, 08/01/2012

Nationals vs. Phillies weather forecast: Decreasing rain chances

Could see a shower or storm in the area early, but rain chances decrease by mid-evening.

By Dan Stillman  |  04:55 AM ET, 08/01/2012 |  Permalink  |  Comments ( 0)
Categories:  Latest, NatCast

 

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