Flash Floods in central Maryland and Washington D.C. prompt water rescues and a Flash Flood Emergency

A Flash Flood Emergency was issued by the National Weather Service (NWS) for southern Montgomery County, Maryland — including Bethesda, Silver Spring, Takoma Park, and Wheaton — on Saturday evening as intense thunderstorms dropped 76–127 mm (3–5 inches) of rain in under two hours.

The heaviest rainfall occurred across central Maryland and parts of Washington D.C., with further reports of notable accumulations in Howard and Prince George’s counties.

A river gauge along the Sligo Creek recorded a dramatic 3 m (10 feet) rise in water levels in just 30 minutes during the evening.

In Ellicott City, Howard County, approximately 38 mm (1.5 inches) of rain fell in less than one hour. Saturated soil combined with heavy downpours triggered flash floods across urban and suburban areas.

Numerous water rescues were conducted in Montgomery County, where local emergency services reported stranded drivers and submerged vehicles on multiple roadways.

According to Montgomery County Fire and Rescue Service (MCFRS), crews responded to approximately 100 flood-related calls between 17:00 and 19:00 local time (LT) on Saturday.

MCFRS crews were dispatched at approximately 17:20 LT in response to reports of a driver stranded in floodwater near Cedar and Philadelphia Avenue.

Crews located the driver trapped on top of their vehicle and brought them to higher ground. No injuries were reported. MCFRS stated that blocked storm drains contributed to the flooding in the area.

At approximately 17:40 LT, MCFRS responded to a vehicle trapped in high water near the 7600 block of Blair Road between Juniper Street and Georgia Avenue. Three individuals were safely rescued from the vehicle.

Around 17:45 LT, roadblock boats were deployed after multiple occupied vehicles were stranded in high water near East-West Highway and Sundale Road. Several individuals were safely evacuated from the vehicles.

In Howard County, emergency officials activated the Emergency Operations Center in response to flash flooding and ongoing rainfall threats. Public works teams were dispatched to monitor storm drains. Localized flooding led to school closures and detours.

The NWS maintained Flash Flood Warnings for a wider area, including northern Fairfax County, Anne Arundel County, and the District of Columbia. Residents were advised to avoid travel and move to higher ground during peak rainfall.

Rishav Kothari

I am an Assistant Editor and Severe Weather & Science Journalist at The Watchers, specializing in real-time severe weather coverage, geophysical event reporting, and research-driven scientific analysis. You can reach me at rishav(at)watchers(.)news.

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