6/18/2025 7:23:00 PM until 6/18/2025 9:30:00 PM

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.

At 723 PM EDT, emergency management reported thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Emergency management reported. 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... Germantown... Rockville... Bethesda... Gaithersburg... Olney... Aspen Hill... Potomac... North Bethesda... Montgomery Village... North Potomac... Fairland... White Oak... Redland... Great Falls... Colesville... Kemp Mill... Chevy Chase... North Kensington... South Kensington... Forest Glen...