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Posted at 05:15 PM ET, 02/02/2013

D.C. area forecast: Mostly miniature snow threats line up one after another

..originally posted at 5:00 a.m...

5:15 p.m. update: More consistent light to occasionally moderate snow activity is now into the immediate D.C. area. This snow will continue to push northeast over the next few hours before winding down. Snow that falls will want to stick to everything, so please be cautious on roads with any accumulation or those that appear just wet as icy patches are likely.

2:15 p.m. update: Temperatures may be staying a bit colder than anticipated, though many spots should get close to a high near 30. Lots of flurries or very light snow reports so far this afternoon, and an enhanced area of light snow (possibly briefly moderate) looks to come in during the late afternoon into evening, maybe dropping a dusting to 1/2” or so.

9:45 a.m. update: After a little sunshine early morning, clouds are increasing ahead of the next clipper system. Newer models and radar seem to indicate snow flurries or snow showers arrive on the early end of forecast (perhaps focused late afternoon or near sunset). They should just be conversational, though a dusting or a bit more is possible in the “heaviest” bands.

EXPRESS FORECAST

Today: Mostly cloudy, flurries or snow showers possible late. Near 30 to mid-30s. | Tonight: Snow showers. Mid-20s to near 30. | Tomorrow: Mostly to partly cloudy. Some snow showers possible. Upper 30s to near 40. | A Look Ahead | Get Express Forecast by E-mail

TODAY'S DAILY DIGIT

A somewhat subjective rating of the day’s weather, on a scale of 0 to 10


Hard to fully embrace the cold after our midweek taste of spring. Some late-day snowflakes might help. Get the Digit on Twitter| Discuss on Facebook

SNOW POTENTIAL INDEX

A daily assessment of the potential for *accumulating* snow for the next week on a 0-10 scale. More info


SPI: 6 (→) - Nothing big around the corner, but the clipper train keeps on coming. Get the SPI on Twitter | Discuss on Facebook

FORECAST IN DETAIL


Whether you’ve savored every chance of snow, or have been left longing for more than a small dose, we’re staring down a number of additional Alberta Clippers in the coming period. Our clipper pattern is also supportive of a generally cooler than normal regime, at least for the short term. Although our averages are slowly on the way up, we’re still not far from our climatological coldest time of the year, and you’ll certainly notice that today and in the time ahead.

Groundhog Day (Saturday): Plan on lots of clouds and another chilly day. The next in our series of Alberta Clippers nears, and we may even see a snow shower pass during the afternoon (50% chance), but more likely nearer sunset or after. Highs range from near 30 to the mid-30s. Good news: wind is down from yesterday, blowing around 10 mph from the south. Confidence: Medium

Tonight: Evening seems slightly more favored for snow showers than afternoon, but the overall chance still sits around 50-60%. This clipper isn’t quite as potent up above as the last, so any accumulation should largely be closer to a dusting to a half inch than much higher. You never fully know where a steadier band might pop up though, and it’s not hard to “pile up” in a cold air mass with fluff factor. Clouds will keep us off the bone-chilling lows of last night, and also help temperatures stay a bit more uniform, in the mid-20s to near 30. There may another batch of snow showers closer to dawn following a break late-night. Confidence: Medium

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast into next week...

Tomorrow (Sunday): The clipper begins to organize as it gets offshore, but not as quickly as the last one that dumped several inches near the ocean to our east. There’s some indication a moisture axis tries to get left behind, so even though we usually clear out after a storm, it’s not as certain here. Let’s say mostly to partly cloudy. We could even seem some more snow showers in the afternoon (30% chance, highest odds northeast). Highs are mainly in the upper 30s to near 40. Winds should kick up from the west and northwest as the day goes on. Confidence: Medium

Tomorrow night: Compared to all this major snow dusting activity of late, this is a calm and quiet night under partly cloudy skies. It will be pretty breezy though. A Friday night redux? With reenforcing cold air behind another clipper turning ocean storm, we’re looking at below normal temperatures in the mid-teens to low 20s. Confidence: Medium

A LOOK AHEAD

Monday features increasing cloudiness as our clipper train keeps on coming. Much of the day could end up dry, with any precipitation trying to hold off till after dark, though it could speed up into late afternoon without a lot of trouble. Highs only make it up to between near freezing and the mid-30s. As we head into evening and overnight, snow showers or squalls become more likely. This is probably another of those dusting to 1” or so situations depending on how it comes together, though we’ll need to watch exact track and moisture content as we close. Confidence: Medium

Rising off morning lows in the mid-and-upper 20s, Tuesday is a day mainly in between... clippers. A snow shower may linger into early morning, with much of the day tending to be dry before additional snow shower chances arrive late day (probably evening or later). Highs range from the mid-30s to near 40. Confidence: Medium

By  |  05:15 PM ET, 02/02/2013

Categories:  Forecasts

 
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