The watch is in effected from Thursday afternoon until late Thursday night and covers all of Southern Connecticut.
The area of rain and thunderstorms moving in from the Midwest has the potential of bringing 1 inch of rainfall with locally higher amounts of 3 or more inches possible, according to the National Weather Service.
Conditions could lead to dangerous flash flooding.
Thursday will be mostly cloudy with a high near 80 with scattered showers during the day.
Thunderstorms that could produce heavy rain and flooding become likely later in the afternoon through 1 a.m. Friday.
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