Connecticut Severe Flash Flood Warning | Effective 07-21-2026 09:57

Headline: 
Flash Flood Warning issued July 21 at 12:57PM EDT until July 21 at 4:00PM EDT by NWS Upton NY
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 21, 2026 - 9:57am
Expires: 
July 21, 2026 - 1:00pm
Description: 
FFWOKX The National Weather Service in Upton has issued a * Flash Flood Warning for... Central Fairfield County in southern Connecticut... Southwestern New Haven County in southern Connecticut... * Until 400 PM EDT. * At 1257 PM EDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2.5 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... New Haven, Milford, Wallingford, Shelton, Guilford, Hamden, Stratford, Trumbull, Branford, North Haven, Monroe, Seymour, North Branford, Orange, Derby, Woodbridge, Bethany, West Haven, East Haven and Ansonia.
Instruction: 
Move to higher ground now! This is a dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order. 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. If you are in a basement, be prepared to move to a higher floor. Stay away or be swept away. River banks and culverts can become unstable and unsafe. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
SNM: AVISO DE INUNDACIONES REPENTINAS hasta 4:00 PM EDT. Evite areas inundadas.
Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 4:00 PM EDT. Esta es una situacion peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo.
Area Description: 
Fairfield, CT; New Haven, CT
Forcast Office: 
NWS Upton NY