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Flash Flood Warning

Posted on: July 21, 2026 - 2:38pm

Flash Flood Warning issued July 21 at 2:02PM EDT until July 21 at 3:30PM EDT by NWS

Upton NY

At 202 PM EDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between

1.5 and 2.5 inches of rain have fallen. The expected rainfall rate is 2 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or

expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

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...

Bridgeport, Norwalk, Milford, Shelton, New Canaan, Fairfield, Stratford, Trumbull, Westport, Darien, Monroe, Wilton, Weston and

Easton.

Wilton Emergency Management