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Severe · Flash Flood WarningThis alert has expired. It is kept for reference.

Flash Flood Warning issued September 13 at 10:08AM EDT until September 13

Affecting Middlesex, CT; New London, CT

In effect until: Sep 13, 2026, 5:00 PM

Middlesex, CT; New London, CT

Likely impact across 2 counties in CT; effects through 5:00 PM.

Get to higher ground now. Never drive through flooded roads.

Read the original bulletin (official text)
FFWOKX

The National Weather Service in Upton has issued a

* Flash Flood Warning for...
Central Middlesex County in southern Connecticut...
New London County in southern Connecticut...

* Until 100 PM EDT.

* At 1008 AM 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 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 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...
Jewett City, Norwich, New London, Colchester, Groton, Salem,
Mystic, Waterford, East Lyme, Ledyard, Griswold, East Haddam, Old
Lyme, Lebanon, Preston, Lisbon, Sprague, Bozrah, Voluntown and
Lyme.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™