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Posted at 04:45 AM ET, 04/05/2011

Intense storms blow by

UPDATE - 5:45 a.m.: All thunderstorm/tornado watches and warnings for the area have expired. Severe squall line has exited area.

UPDATE - 5:25 a.m.: Tornado warning for SE Calvert and St. Mary’s county until 6 a.m. Threat is over elsewhere and watches/warnings dropped.

UPDATE - 5:15 a.m.: Tornado warnings remain in effect for western shore of Chesepeake Bay from St. Mary’s to Anne Arundel county through 5:30 a.m.

UPDATE- 5:00 a.m.: Large tornado warning now extends to north of Annapolis (in Anne Arundel county) and just south of Lexington Park in St. Mary’s county (see map below). Remains in effect until 5:15-5:30 a.m.:

RADAR INDICATED TORNADOES ALONG A LINE FROM UPPER MARLBORO TO 6 MILES S OF MARLTON TO 7 MILES W OF GOLDEN BEACH...MOVING EAST AT 60 MPH.

Possible tornadic storms in warned eastern suburbs moving east at 60 mph. Threat will end next 10-15 minutes. Take cover until then.

UPDATE - 4:50 a.m. Tornado Warning for parts of Anne Arundel, Calvert, Charles, Prince Georges and St. Marys County until 5:15 am (see below):

SEVERE THUNDERSTORMS CAPABLE OF PRODUCING TORNADOES ALONG A LINE FROM CLINTON TO ST. CHARLES TO LA PLATA. MOVING EAST AT 60 MPH. Take cover immediately

UPDATE - 4:40 a.m. Tuesday morning: A severe thunderstorm warning is in effect for the District (through 5 a.m.) and much of the eastern suburbs (through 5:30 a.m.) as an intense squall line works through with torrential rains and the potential for damaging winds.

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See PM Update for the forecast for tomorrow. And if you haven’t already, join us on Facebook and follow us on Twitter. Keep reading for earlier updates...

From last night (7:45 p.m.): Showers and storms (what was a 900 mile long line) are rapidly advancing from the west, and appear to be ahead of schedule. The strongest line of showers and storms is now pushing through West Virginia on a boundary out ahead of the cold front still to its west in eastern Ohio. Some lighter showers have popped out ahead of that activity, and a few may skirt western and northwestern portions of the area in coming hours.

If it holds, and keeps moving the same speed, the line in West Virginia could impact by late evening or around midnight. However, it will be passing into a less moisture-rich environment and continues outrunning the front to its west. Still, showers and storms are likely once the band arrives and until the front passes. At the current time, it appears the severe threat is not a major one, but isolated damaging winds are still possible, and much cooler air is on its way!

By and  |  04:45 AM ET, 04/05/2011

 
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