Headline:
Flash Flood Warning issued July 21 at 6:47PM EDT until July 21 at 10:00PM EDT by NWS Baltimore MD/Washington DC
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
July 21, 2026 - 3:47pm
Expires:
July 21, 2026 - 7:00pm
Description:
FFWLWX
The National Weather Service in Sterling Virginia has issued a
* Flash Flood Warning for...
Central Howard County in central Maryland...
Northeastern Montgomery County in central Maryland...
* Until 1000 PM EDT.
* At 647 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Columbia... Germantown...
Olney... Damascus...
Montgomery Village... Clarksburg...
Highland... Laytonsville...
Roxbury Mills... Dayton...
Glenelg... Clarksville...
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Area Description:
Howard, MD; Montgomery, MD
Forcast Office:
NWS Baltimore MD/Washington DC
Sender: