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PM Update: Storms around tonight, drier this weekend; Perseid meteor shower viewing info

Radar & lightning: Latest D.C. area radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

A cool front oozes through the region overnight with scattered showers and storms.  It sits mostly to our south over the weekend, reducing but not eliminating rain chances.

Through Tonight:  There’s roughly even odds (40-60 percent chance) of showers and storms, with locations north and northwest of the beltway having the best chances.  Any storms that develop may produce torrential rains and gusty winds, but I don’t expect a major severe weather outbreak.  The chance of showers and storms diminishes after midnight, with partly to mostly cloudy skies the rest of the night.  Lows range from the upper 60s to low-to-mid 70s (downtown). Winds are light.

Tomorrow (Saturday and Saturday night): Drier air attempts to ease its way into the region, but doesn’t make a ton of headway.  So we’ll end up with a pretty typical early August day with partly sunny skies, moderate humidity (not as high as today) and highs in the upper 80s. Winds are light from the northwest at 5-10 mph.

Partly cloudy and pleasant Saturday night, with lows from the mid-to-upper 60s in the cooler suburbs to the low 70s downtown.

Sunday:  Another ordinary summer day with partly sunny skies and highs into the mid-to-upper 80s.  With a front in the vicinity, we may see a few afternoon showers and storms pop-up (30 percent chance) but most of us should stay dry.  Winds are light from the southwest.

See Camden Walker’s forecast into early next week. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

Pollen: Tree and grass counts are LOW, weeds are MODERATE, and mold spores are HIGH.

Perseid meteor showers: As Blaine Friedlander discussed Thursday, the Perseid meteor shower peaks Sunday night with up to 90 shooting stars per hour and the possibility of a few fireballs. Viewing conditions in the D.C. area are a tough call. We may have a few storms into Sunday evening; but by the time meteor shower viewing is best, I would expect at least some breaks in the clouds, if not just widely scattered clouds.  I think AccuWeather’s map below is pretty good…our viewing prospects are “fair”.

AccuWeather’s assessment of viewing conditions for the Perseid Meteor Shower (

Stay tuned to our latest forecasts over the weekend for sky condition updates pertaining to shower viewing.

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.
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Jason Samenow · August 9, 2013

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