(Updated at 9:30 a.m.) Arlington and much of the D.C. area will be under a Flash Flood Watch on Christmas Eve.
A strong storm is expected to sweep through the area tomorrow afternoon and evening, bringing heavy rain and gusty wind. There may also be a few snowflakes near the end, as temperatures plummet, but no accumulation is expected locally.
More on the flooding potential, from the National Weather Service, is below.
…FLASH FLOOD WATCH NOW IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT…
* ONE AND HALF TO TWO AND HALF INCHES OF RAIN ARE EXPECTED THURSDAY AFTERNOON AND THURSDAY NIGHT. THIS IS EXPECTED TO RESULT IN FLASH FLOODING OF SMALL STREAMS AND CREEKS AND POSSIBLE RIVER FLOODING.
A strong cold front will push through the region on Christmas Eve. See the graphic below for more details on the weather threats for this system. pic.twitter.com/kM2ZSYZTHu
— NWS Baltimore-Washington (@NWS_BaltWash) December 23, 2020
A powerful and large scale storm will progress from the Central to Eastern U.S. over the next few days. A variety of hazards are expected and will impact millions. All the colors on the map look like Holiday lights or a Christmas tree! pic.twitter.com/FbMNZeylM5
— National Weather Service (@NWS) December 23, 2020
A powerful cold front will bring a variety of impacts to the region today and tonight. Heavy rain, thunderstorms, and gusty winds are expected. Flash and river flooding may develop in low lying areas. Some of the rain could change to snow as arctic air moves in later tonight.
— NWS Baltimore-Washington (@NWS_BaltWash) December 24, 2020