Flash Flooding, Heavy Rain, Strong Wind Gusts For Southern CT Thursday Night

SOUTHERN CONNECTICUT — The National Weather Service has issued a hazardous weather outlook for all of southern Connecticut, and a flood watch has also been issued for most of the region.

In a hazardous weather outlook for all of southern Connecticut, the weather service said:

"A strong cold front will bring locally heavy rainfall from mainly this afternoon through tonight. The main threat from this rainfall will be from minor urban and poor drainage flooding. Localized flash flooding is also possible, especially this evening. Isolated thunderstorms with the front could bring locally strong to potentially damaging winds with the greatest threat from the New York City metro/Hudson River corridor on west."

A flood watch has been issued for New Haven, Middlesex and New London counties, the weather service said:

• Flooding caused by excessive rainfall is possible.
• From 8 PM EDT this evening through Friday morning.
• Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas.
• Multiple rounds of heavy showers are expected to move across the region throughout tonight into early Friday morning.
• Storm total rainfall amounts of 2 to 3 inches with locally higher amounts possible. Rainfall rates at times will be near 1 inch of rain in one hour. This will lead to excessive runoff, increasing the potential for flooding especially in urban, low lying and poor drainage areas. Small rivers and streams may overflow their banks.

Extended forecast details via the weather service:

This Afternoon: A 40 percent chance of showers. Cloudy, with a high near 72. Southeast wind around 13 mph, with gusts as high as 28 mph.

Tonight: Showers and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain. Low around 57. South wind 10 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Friday: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming northwest around 6 mph in the morning.

Saturday: Sunny, with a high near 68. Calm wind becoming southwest 5 to 7 mph in the afternoon.

Sunday: Mostly sunny, with a high near 68.