Several rounds of storms packing heavy downpours are possible tonight, leading to a Flood Watch being issued for Arlington and much of the region.
The watch is in effect until 4 a.m. Thursday.
Flash flooding and gusty winds are possible tonight, the National Weather Service says.
In Arlington, flooding is often limited to ponding on roadways and streams overtopping their banks, but some past summer rain storms have resulted in widespread flash flooding and numerous flooded basements.
From NWS:
…FLOOD WATCH IN EFFECT UNTIL 4 AM EDT THURSDAY…
* WHAT…Flash flooding caused by excessive rainfall is possible.
* WHERE…Portions of DC, Maryland, Virginia and panhandle West Virginia, including the following areas: in DC, District of Columbia. In Maryland, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Frederick MD, Northwest Howard, Northwest Montgomery, Prince Georges and Washington. In Virginia, Arlington/Falls Church/Alexandria, Clarke, Eastern Loudoun, Fairfax, Frederick VA and Western Loudoun. In panhandle West Virginia, Berkeley, Jefferson and Morgan.
* WHEN…Until 4 AM EDT Thursday.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS…
– Numerous showers and thunderstorms with heavy rain are expected through this evening and into the overnight. Rainfall rates of 2 inches per hour are possible, leading to the potential for flash flooding especially in areas that see multiple rounds of heavy rain.
– Please visit https://www.weather.gov/safety/flood for flood safety and preparedness information.PRECAUTIONARY/PREPAREDNESS ACTIONS…
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
The Flood Watch this evening has been expanded (areas in green), for the potential of flash flooding, with the possibility of gusty winds. Stay weather aware and see https://t.co/Kt74D8dUsR for the latest. #DCwx #MDwx #VAwx #WVwx pic.twitter.com/VpSzy4TqI4
— NWS Baltimore-Washington (@NWS_BaltWash) June 8, 2022