Slow-moving storms this afternoon and evening may pack downpours that could cause flooding, forecasters say.
The National Weather Service just issued a Flood Watch for Arlington, the District and most of the region as a result.
From NWS:
1020 AM EDT Fri Aug 5 2022
…FLOOD WATCH IN EFFECT FROM 3 PM EDT THIS AFTERNOON THROUGH THIS EVENING…
* WHAT…Flash flooding caused by excessive rainfall is possible. […]
* WHEN…From 3 PM EDT this afternoon through this evening.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS…
– Showers and thunderstorms will develop this afternoon and may last into the evening. Any thunderstorms will be capable of producing very heavy rainfall, with localized totals of two to four inches possible. Much of the rain may fall within a one to three hour period, making rapid rises in creeks and streams possible, as well as flash flooding in urban areas.
– http://www.weather.gov/safety/floodPRECAUTIONARY/PREPAREDNESS ACTIONS…
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.