Nighttime storm potential prompts Flood Watch

Storms bring heavy rain, wind and flooding at night (file photo)
The possibility of a succession of storms tonight packing heavy rain has prompted a Flood Watch from the National Weather Service.
The watch is in effect until 4 a.m. for Arlington, the District and much of the Washington region. Forecasters say flash flooding may occur during prolonged downpours.
More from NWS:
…FLOOD WATCH IN EFFECT UNTIL 4 AM EDT SUNDAY…
* WHAT…Flash flooding caused by excessive rainfall is