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Posted at 09:40 PM ET, 04/24/2011

Thunderstorms possible thru the evening

Severe thunderstorm watch expires, still stormy

(originally posted at 3:30 p.m.)

9:40 p.m. update: Showers and thunderstorms persist across parts of the area. Southern Fauquier, Prince William, Fairfax and Prince Georges counties in particular have seen multiple rounds of activity “training” overhead. Showers and storms may persist into the night, but their intensity should gradually diminish. Some localized flooding cannot be ruled out in places seeing near-continual rain. We’ll update if warranted, but otherwise carry an umbrella and keep watching radar if headed out.

9:00 p.m. update: The severe thunderstorm watch has expired, as have all warnings, but additional scattered showers and storms continue to impact parts (mainly southern) of the area. The storm which moved through earlier is racing east toward the bay. We’ll have to keep watch on activity still ongoing, as well as more to the west of the area which could still produce severe weather.

3:30 p.m. summary: A severe thunderstorm watch has been issued for the entire metro region through 9 p.m. Thunderstorms with damaging winds to 70 mph, dangerous lightning and large hail up to 1” diameters are possible in storms that form.

Follow storms and warnings on the severe weather tracking station below, and comment with your observations...

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Damage/severe storm reports (updated at 9:40 p.m.):

Evening storms: Evening storm reports include 1” hail around Culpeper, .75” hail in Alexandria and parts of Anne Arundel county. It’s probable other locations received similar sized hail as well.

From earlier: Around Leesburg, Twitter follower megachris reported a wind gust to 58 mph and a downed tree . The National Weather Service also logged a damage report from Leesburg with shingle roof damage to a home. A 58 mph was also observed near Crofton, Md.. One report of 0.75” hail came in from Montgomery county.

Keep reading for earlier updates...

8:30 p.m. update: An additional severe thunderstorm warning has been issued to the north of the earlier one until 9:15 p.m. places not included in the prior one primarily include northern D.C. and parts of PG county. Places in the path of this storm include Landover and College Park.

8:10 p.m. update: A severe thunderstorm warning has been issued for much of the southern portion of the immediate metro area until 8:45 p.m. A severe storm near Fort Belvoir will impact places like Huntington, Fort Washington, National Harbor, Clinton, and Camp Springs. 60mph winds are possible as is hail to quarter size.

8:05 p.m. update: A severe thunderstorm warning is in effect for extreme eastern Howard County and Anne Arundel County until 8:45 p.m. Hail and wind gusts to 60 mph are possible with this storm.

7:55 p.m. update:Earlier warnings have expired. The storm remains strong and is currently headed into southern Fairfax county. Places like Alexandria and D.C. may be impacted by this storm in the next 30 minutes to an hour, with the bulk perhaps passing south of Alexandria.

7:00 p.m. update: A severe thunderstorm warning has been issued for Culpeper and Fauquier counties until 7:45 p.m. The storm, now near Culpeper, is moving NE at 35 mph. It will head toward Fauquier county shortly and may contain hail and wind to around 60 mph. Additional storms north and east of the city are weaker. The severe storm may head toward D.C. later if it holds together.

6:50 p.m. update: Norther portions of the watch have been canceled, including Howard and Frederick counties. Scattered showers and storms continue, generally south of that area.

6:15 p.m. update: Though the main activity has quickly departed, some additional showers and storms are still meandering across portions of the area. Coverage thus far is not widespread with these additional cells. Still, brief periods of heavy rain and some thunder and lightning as well as gusty winds are possible in the near term. The severe thunderstorm watch is also still in effect with more storms possible, but it appears the risk has waned at least temporarily.

5:05 p.m. update: The line of storms has now advanced into Baltimore and northern Anne Anne Arundel counties where heavy downpours, dangerous lightning and strong winds remain possible (a warning is in effect through 5:15 p.m.). After those storms pass over the Bay, everyone in the D.C. metro region should get a nice break from any storm activity. We’ll be watching to see if any more storms develop to the west, and will keep you posted.

4:45 p.m. update: A severe thunderstorm warning is now in effect for eastern Montgomery, northern PG, Howard, northwest Anne Arundel and Baltimore city until 5:15 p.m. The warning extends into the District but storms are not reaching that far south. Torrential rains, dangerous lightning and winds to 60 mph or so are possible in these storms.

4:35 p.m. update:The tornado warning that had been in effect in eastern Loudoun into central Montgomery County has expired. The strongest thunderstorm activity is now in eastern Montgomery County (north of the beltway) into western Howard county and is moving northeast. Dangerous lightning and strong gusty winds to 60 mph remain possible with these storms.

4:15 p.m. update: Severe thunderstorm warning issued for Montgomery county, western Howard county, north central Prince George’s county, east central Loudoun county, and north central Fairfax county until 4:45 p.m. Dangerous lightning and winds to 60 mph are possible in these storms. Locations impacted include North Potomac, Rockville, Gaithersburg, Olney and Colesville from west to east. The storms are moving east-northeast at 40-45 mph.

4:04 p.m. URGENT update: Tornado warning for east central Loudoun county and central Montgomery county until 4:30 p.m. Take cover immediately. Doppler radar indicated a rotating thunderstorm capable of producing a tornado near Landsdowne at 4:02 p.m., moving east at 40 mph. Locations in the possible path include Poolesville, North Potomac, Gaithersburg, and Rockville.

3:45 p.m. update: A severe thunderstorm warning is also in effect for northern Fairfax county and western Montgomery county through 4:15 p.m. The worst of the storm is now east of Purcelville in Loudoun county near Leesburg and is headed towards Poolesville in Montgomery county. The storms are moving east at 45 mph.

3:30 p.m. update: A severe thunderstorm warning is in effect for Loudoun county, northern Fauquier county, and southern Frederick county until 4:15 p.m. A thunderstorm with torrential rain and potentially destructive winds to 70 mph is moving through the area.

By and  |  09:40 PM ET, 04/24/2011

Categories:  Thunderstorms

 
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