CT Weather: Heat Advisory Issued, Storm Chances Dominate Forecast

CONNECTICUT — A heat advisory is in effect for most of Connecticut on Wednesday, and a hazardous weather outlook has also been issued for southern Connecticut by the National Weather Service.

"There is a low probability for widespread hazardous weather that would meet NWS warning criteria," the weather service said concerning southern Connecticut.

It will feel in excess of 100 degrees in parts of Connecticut on Wednesday. No heat advisory has been issued for coastal sections of Middlesex and New London counties.

The weather service said showers and thunderstorms are possible Wednesday night, and an "isolated severe thunderstorm is possible." Localized flash flooding is possible too. Air quality alerts have also been issued for southern Connecticut.

It looks like beginning late Wednesday and through Saturday there will be chances for showers and storms, but there will also be plenty of periods of sunshine too. It looks like the heat and humidity will dip a bit beginning on Thursday but climb again on Sunday.

In the National Weather Service daily forecast, which can be viewed below, it shows a chance for showers and thunderstorms on Wednesday night/Thursday morning, Thursday night, Friday afternoon and night, and Saturday afternoon.

"Today is another First Alert Weather Day due to the continuation of heat and humidity reaching dangerously high levels," WFSB 3 TV meteorologists said. "The Heat Advisory that encompasses a large part of CT is in effect until this evening at 8pm. After any morning fog burns off, we again expect high temperatures to reach 90 or higher and in doing so, our 2nd heat wave of the year will go into day #4! Like yesterday, the heat index (or ‘feels like’ temp) will reach 95-100, perhaps higher in a few spots, thanks to oppressive dew point values (well into the 70s)."

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"High pressure positioned near Bermuda, with clockwise flow around it, will keep pumping warm and humid air our way. It will also help to deflect the remnants of Beryl to our northwest. With CT positioned between the remnant low and the Bermuda high, the pressure gradient tightens leading to breezy conditions into tomorrow. While there could be an early morning shower tomorrow, things look a little bit better than today in terms of heat and humidity under partly to mostly sunny skies," WFSB 3 TV meteorologists said. (Read/watch more at WFSB 3 TV).

Here are the forecast conditions for southern Connecticut via the National Weather Service:

Today: Partly sunny, with a high near 86. Heat index values as high as 96. South wind 6 to 14 mph, with gusts as high as 24 mph.

Tonight: A 50 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 73. South wind 8 to 13 mph, with gusts as high as 25 mph.

Thursday: A 30 percent chance of showers and thunderstorms, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 85. South wind 10 to 14 mph.

Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. South wind 6 to 10 mph. Chance of precipitation is 50%.

Friday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.

Saturday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Sunday: Sunny, with a high near 90.

Here are the forecast conditions for northern Connecticut via the National Weather Service:

Today: A slight chance of showers after 1pm. Partly sunny, with a high near 91. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

Tonight: A chance of showers, with thunderstorms also possible after 2am. Areas of fog after 5am. Otherwise, increasing clouds, with a low around 74. South wind 9 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A slight chance of showers, with thunderstorms also possible after 11am. Areas of fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 7 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

Thursday Night: A chance of showers and thunderstorms, mainly after 9pm. Partly cloudy, with a low around 71. South wind 6 to 9 mph. Chance of precipitation is 30%.

Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

Friday Night: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 71. Southwest wind 3 to 8 mph. Chance of precipitation is 60%.

Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%.

Saturday Night: Mostly clear, with a low around 68. South wind around 5 mph becoming calm in the evening.

Sunday: Sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.