CT Weather: Thunderstorms Forecast Thursday And New Details On When This Heat Wave Ends

A cold front passing through the state on Thursday could bring thunderstorms to Connecticut, according to meteorologists.

Meanwhile, relief from the heat and humidity is coming, forecasters said.

WFSB 3 TV meteorologists said the rest of Wednesday will be mostly dry, but some isolated showers or storms “can’t be ruled out.”

The current oppressive heat will continue into Thursday, with heat index values possibly exceeding 100 degrees, according to WFSB. The National Weather Service has a heat advisory and hazardous weather outlook for Connecticut through late Thursday, due to these anticipated heat index values.

An approaching cold front is now expected to hit the state on Thursday, bringing with it isolated to scattered storms, WFSB reports. Forecasters previously predicted this front would arrive on Friday.

Due to this change in timing, Friday is no longer a “First Alert Weather Day” for WFSB, which expects Friday to be cooler and less humid.

Timing of potential storms

The National Weather Service said storms may begin after 2 a.m. Thursday and continue off and on throughout the day on Thursday. There is a 60 to 80 percent chance of precipitation on Thursday, the weather service said.

Rain may impact weekend plans

WFSB reports Saturday will be sunny and comfortable, with temperatures in the 80s and low humidity, though Sunday may bring wet weather. Early next week is also looking to be dry and comfortable, according to WFSB. (Read more at WFSB 3 TV).

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Here are the forecast details for southern Connecticut via the National Weather Service, as of Wednesday afternoon:

This Afternoon: Sunny, with a high near 88. Heat index values as high as 98. South wind 5 to 7 mph.

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 2 a.m. Mostly cloudy, with a low around 74. Southwest wind 3 to 6 mph.

Thursday: A chance of showers and thunderstorms before 8 a.m., then showers likely and possibly a thunderstorm between 8 a.m. and 11 a.m., then a chance of showers and thunderstorms after 11 a.m. Mostly cloudy, with a high near 89. Heat index values as high as 99. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Partly cloudy, with a low around 74. Southwest wind around 6 mph.

Friday: Sunny, with a high near 86. Northwest wind 6 to 9 mph.

Friday Night: Mostly clear, with a low around 65.

Saturday: Mostly sunny, with a high near 83.

Saturday Night: A 40 percent chance of showers after 2 a.m. Mostly cloudy, with a low around 69.

Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2 p.m. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.

Here are the forecast details for northern Connecticut via the National Weather Service, as of Wednesday afternoon:

This Afternoon: Mostly sunny and hot, with a high near 91. Heat index values as high as 99. South wind 3 to 7 mph.

Tonight: A slight chance of showers between 3 a.m. and 5 a.m., then a chance of showers and thunderstorms after 5 a.m. Increasing clouds, with a low around 74. South wind 6 to 8 mph. Chance of precipitation is 30%.

Thursday: A chance of showers and thunderstorms before 8 a.m., then showers and possibly a thunderstorm between 8 a.m. and 11 a.m., then a chance of showers and thunderstorms after 11 a.m. Patchy fog before 11 a.m. High near 90. Heat index values as high as 98. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: A chance of showers and thunderstorms, mainly before 10 p.m. Partly cloudy, with a low around 73. Southwest wind around 7 mph becoming west after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: Mostly sunny, with a high near 84. Northwest wind 7 to 9 mph.

Friday Night: Mostly clear, with a low around 60. North wind 3 to 6 mph.

Saturday: Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

Saturday Night: A chance of showers after 2 a.m. Mostly cloudy, with a low around 65. South wind around 6 mph. Chance of precipitation is 30%.

Sunday: A chance of showers, with thunderstorms also possible after 2 p.m. Mostly cloudy, with a high near 82. Southwest wind 5 to 7 mph. Chance of precipitation is 50%.