CT Weather: Tropical Storm Elsa's Impacts To State Increasing

CONNECTICUT — The weather will be excessively hot once again on Wednesday, and like Tuesday, there is a chance for strong-to-severe thunderstorms this afternoon and evening. The National Weather Service has issued a severe thunderstorm watch for the entire state up until 11 p.m.

But all eyes are on Tropical Storm Elsa, which is expected to impact Connecticut's weather forecast beginning Thursday night and lasting through Friday.

WTNH News 8 chief meteorologist Gil Simmons said in a social media post that "the impacts are looking more as more" as Elsa is now forecast to track closer to Connecticut. Again, we know these things can change quickly. If Elsa tracks closer to Connecticut, it means strong wind gusts and heavy rain for us, along with significant storm surge.

As for Wednesday, Simmons wrote, "Sunny skies through the middle of the day today and it will be hot again with 80s and 90s. We have air quality issues today! The heat index will be higher! Also, big thunderstorms possible during the afternoon & evening hours!"

The National Weather Service is already noting that flash flooding is possible late Thursday though Friday in anticipation of Elsa's impacts on Connecticut. Up to two inches of rain is possible through Friday evening.

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Fairfield, New Haven and northern parts of Middlesex County: A heat advisory is in effect until 8 p.m. Wednesday. It may feel as hot as 101 degrees.

Southern Connecticut: Isolated severe storms are possible late this afternoon and into the evening. Flash flooding is possible late Thursday through Friday evening.

Hartford, Tolland and Windham counties: A heat advisory is in effect until 7 p.m. Wednesday as it may feel as hot as 94 to 99 degrees.

Here are the extended forecast details for southern Connecticut:

Today: A 20 percent chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, sunny, with a high near 90. Heat index values as high as 97. Calm wind becoming southwest 5 to 8 mph in the morning.

Tonight: A 40 percent chance of showers and thunderstorms, mainly before 2am. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.

Thursday: A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 82. East wind 5 to 10 mph.

Thursday Night: Showers and possibly a thunderstorm. Low around 69. South wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Friday: Showers and possibly a thunderstorm. High near 81. Southeast wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Friday Night: A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67.

Here are the extended forecast details for northern Connecticut:

Today: Partly sunny. Scattered thunderstorms and showers this afternoon. Some thunderstorms may produce gusty winds and heavy rainfall this afternoon. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy. Scattered thunderstorms and showers in the evening, then scattered showers and thunderstorms after midnight. Patchy fog after midnight. Some thunderstorms may produce gusty winds and heavy rainfall in the evening. Humid with lows in the upper 60s. Southwest winds around 5 mph, becoming northwest after midnight. Chance of rain 50 percent.

Thursday: Mostly cloudy with scattered showers and thunderstorms. Patchy fog in the morning. Cooler with highs in the upper 70s. East winds 5 to 10 mph. Chance of rain 50 percent.

Thursday Night: Showers and scattered thunderstorms. Humid with lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 90 percent.

Friday: Showers with highs in the upper 70s. South winds around 5 mph, becoming east in the afternoon. Chance of rain 90 percent.