Arlington County, D.C. and its immediate neighbors are under a Flood Watch starting early Monday morning.
Heavy rain is expected overnight and during the morning commute. The soaking rainfall may cause isolated flooding.
More from the National Weather Service:
…FLOOD WATCH IN EFFECT FROM 4 AM EDT TUESDAY THROUGH TUESDAY AFTERNOON…
* WHAT…Flash flooding caused by excessive rainfall is possible.
* WHERE…Portions of DC, Maryland and northern Virginia, including the following areas: in DC, District of Columbia. In Maryland, Anne Arundel, Carroll, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford and Southern Baltimore. In northern Virginia, Arlington/Falls Church/Alexandria, Eastern Loudoun, Fairfax and Western Loudoun.
* WHEN…From 4 AM EDT Tuesday through Tuesday afternoon.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS…
– An area of low pressure is expected to develop along a slow moving boundary draped across the region Tuesday morning through early Tuesday afternoon. Heavy showers and a few thunderstorms are expected to drop 2 to 3 inches across much of the watch area, with isolated higher amounts up to 5 inches possible in the heaviest cells.
– 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.
More via social media:
9:40 pm: Plan ahead! Flood watch issued for much of DC area (dark green shading on map) starting at 4 a.m. Tuesday. A few inches of rain possible in a short period of time during the morning commute. See our detailed forecast: https://t.co/igRH3PBYrJ pic.twitter.com/I3k2pJuHxL
— Capital Weather Gang (@capitalweather) September 6, 2022
#NEW: A Flood Watch has been issued for the DC/Baltimore metro areas from 4AM-2PM Tuesday. 1-3 inches of rain is expected with up to 5 inches possible with heavier showers and storms. Turn around, don’t drown. #vawx #mdwx #dcwx pic.twitter.com/7YyhBRr14s
— Washingtonian Weather Geeks (@WashingtonianWx) September 6, 2022
Photo via National Weather Service/Twitter