Arlington and the immediate D.C. area is now under a Flood Watch.
The watch was issued shortly before 5 p.m., amid developing storms in the area, and will remain in effect until 10 p.m.
More, below, from the National Weather Service.
449 PM EDT Sat Jul 19 2025
…FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING…
* WHAT…Flash flooding caused by excessive rainfall continues to be possible.
* WHERE…Portions of DC, including the following , District of Columbia, central Maryland, including the following areas, Central and Southeast Montgomery and Prince Georges, and northern Virginia, including the following areas, Arlington/Falls Church/Alexandria and Fairfax.
* WHEN…Until 10 PM EDT this evening.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS…
– Showers and thunderstorms have formed over portions of the D.C. metro as of 445 PM. These thunderstorms are producing instantaneous rainfall rates of 1 to 3 inches an hour, with locally higher amounts. These storms are forecasted to remain nearly stationary over the next few hours, which may result in flash flooding over sensitive and urban areas. Total rainfall amounts of 2 to 4 inches are possible in the most persistent storms.
– Please visit www.weather.gov/safety/flood for flood safety and preparedness informationPRECAUTIONARY/PREPAREDNESS ACTIONS…
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
4:36 PM Radar Update: A cluster of slow moving showers & isolated thunderstorms are forming in and around the Capital Beltway region. Locally heavy rainfall is likely in these developing storms. Monitoring the potential for flooding if these persist. #DCwx #VAwx #MDwx pic.twitter.com/tipMmuTuBB
— NWS Baltimore-Washington (@NWS_BaltWash) July 19, 2025