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Severe T-storm watch posted

UPDATE, 5:10 p.m.: The severe thunderstorm warning for Baltimore and Harford counties has been lifted. Watches remain in effect. Here's the latest watch/warning map

EARLIER: Thunderstorms pushing south and west out of New Jersey and Pennsylvania could reach Maryland this afternoon or evening. The National Weather Service has posted a severe thunderstorm watch for all of Central Maryland, the District and Northern Virginia, as well as the northern Eastern Shore and west to Allegany County. Large hail remains the primary worry.

Here's the radar loop. And the satellite view. Here's (as of 2:50 p.m.) where the watch was posted. Here is the forecast.  Here's a regional map of watches and warnings.

And here's a portion of the watch statement:

"THIS AFTERNOON AND TONIGHT

"SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EARLY THIS
EVENING ACROSS THE AREA. AN UPPER LEVEL DISTURBANCE OVER THE
NORTHEAST WILL MOVE TO THE SOUTHWEST THIS AFTERNOON. THUNDERSTORMS
ARE EXPECTED TO DEVELOP EARLY THIS AFTERNOON OVER PENNSYLVANIA AND
NEW JERSEY AND MOVE TO THE SOUTHWEST INTO THE AREA.

"THE ATMOSPHERE ALOFT IS VERY COLD AND HAIL IS EXPECTED FROM THE
STRONGEST STORMS THIS AFTERNOON. THE MOST LIKELY TIME FOR SEVERE
WEATHER IS BETWEEN 2 AND 4 PM ACROSS CENTRAL AND NORTHERN
MARYLAND...AND BETWEEN 4 AND 6 PM FURTHER SOUTH ACROSS NORTHERN
VIRGINIA THE DISTRICT OF COLUMBIA AND SOUTHERN MARYLAND.
THUNDERSTORMS ARE EXPECTED TO WEAKEN AS SUNSET APPROACHES.

"THE PRIMARY RISK FROM SEVERE THUNDERSTORMS THIS AFTERNOON WILL BE
LARGE HAIL UP TO HALF DOLLAR SIZE."

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About the blogger
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1993, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page.
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