3/11/10: Forecast Update – Heavy rainfall and possible flooding

The entire state except for the lower Eastern Shore is now under a Flood Watch:

…FLOOD WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING…

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS EXPANDED THE FLOOD WATCH TO INCLUDE THE BALTIMORE AND WASHINGTON METROPOLITAN AREAS…LOWER SOUTHERN MARYLAND…NORTH-CENTRAL MARYLAND…AND NORTHERN AND CENTRAL VIRGINIA.

* FROM FRIDAY MORNING THROUGH SATURDAY EVENING.

* RAIN WILL BEGIN TONIGHT AND WILL CONTINUE FRIDAY THROUGH SATURDAY. THE RAIN WILL BE HEAVY AT TIMES FRIDAY NIGHT AND SATURDAY AND WILL INCREASE THE FLOOD THREAT FOR URBAN
AREAS…SMALL STREAMS…AND RIVERS ACROSS THE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS.

MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

HPC forecasts up to 4.5 inches of rain between tonight and Monday night:


Expect rain to develop later tonight and continuing tomorrow. The rain will become heavy at times tomorrow night and Saturday. It should taper off Saturday night and Sunday morning, but light rain chances will continue into early next week.