Delaware Severe Flash Flood Warning | Effective 07/21/2026 15:53

Headline: 
Flash Flood Warning issued July 21 at 6:53PM EDT until July 21 at 11:00PM EDT by NWS Mount Holly NJ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 21, 2026 - 3:53pm
Expires: 
July 21, 2026 - 8:00pm
Description: 
FFWPHI The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Northwestern Kent County in central Delaware... Southwestern New Castle County in northern Delaware... * Until 1100 PM EDT. * At 653 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. The expected rainfall rate is 0.5 to 1.5 inches in 1 hour. 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...Flooding of small creeks and streams, urban areas, highways, streets, and underpasses as well as other drainage and low lying areas. * Some locations that may experience flash flooding include... Middletown, Smyrna, Clayton, Delaware City, Mount Pleasant, Green Spring, Port Penn, Saint Georges, Delaney Corner, Bear, Glasgow and Townsend.
Instruction: 
Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Kent, DE; New Castle, DE
Forcast Office: 
NWS Mount Holly NJ