July 25, 2013 New London Co Flash Flood Event

The combination of moist air, a frontal boundary
to the east, and a wave of low pressure riding along it led to the development of showers
and thunderstorms across southeast Connecticut. With these storms, instantaneous rainfall
rates upwards of 4 inches per hour were observed. The slow movement and persistence of the heavy
rain led to significant flooding issues around the town of Norwich, as several locations
saw at least 5 inches of rainfall during the morning and afternoon hours. Let’s go ahead and take a closer look at the
storm total rainfall estimates from dual-pol radar. Indeed, on the northern side of Norwich,
estimates indicated an area of over 7 inches! And 7.88 inches of rain was measured on the
north side of the town
of Norwich.

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