CT Weather: Heavy Rain, Thunderstorms Forecast On Thursday

CONNECTICUT — We're looking at an unsettled weather pattern beginning Wednesday night and running through Sunday.

Rain and thunderstorms are possible beginning early Thursday and continuing throughout the day and night, and then more rain enters the picture on Sunday. In between, Friday and Saturday look like nice, sunny and warm days.

"An initial round of rain that could be heavy at times tomorrow morning is in association with a warm front," said WFSB 3 TV chief meteorologist Mark Dixon. "Since yesterday, CT has been added back to the marginal risk for excessive rain. With the timing during the AM commute leading to reduced visibility and possibility for nuisance flooding, we have issued a First Alert.

"After the morning round, there will be a lull with a noticeable uptick in humidity as dew point values rise close to 70," Dixon added. "Then during the afternoon and evening hours, as a cold front pushes into Southern New England, isolated thunderstorms will be possible. Any that develop could produce gusty wind and additional heavy rain. Between the rounds, we’re expecting the potential of 1.0-1.5″ of rain (with locally higher amounts, especially if/where thunderstorms develop)."

Weekend forecast details

"With an upper-level area of low pressure across Canada this weekend, the 2-day period may not be entirely dry," Dixon said. "We continue to think that Saturday is primarily dry (just a slight chance for a shower to pop up during the afternoon). The highest likelihood for showers now looks to come Sunday morning, thereafter at least partial clearing. Both days feature lows in the 50s and highs in the mid-70s." (Read/watch more at WFSB 3 TV).

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

Tonight: A slight chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 65. South wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: Showers and thunderstorms, mainly before 2pm, then showers and possibly a thunderstorm after 5pm. High near 79. South wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Low around 63. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Mostly sunny, with a high near 81. Northwest wind 5 to 14 mph becoming southwest in the afternoon.

Saturday: Mostly sunny, with a high near 78.

Sunday: A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 77.

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

Tonight: A chance of showers, mainly after 4am. Areas of fog after 2am. Otherwise, increasing clouds, with a low around 66. South wind 5 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Thursday: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. Areas of fog before noon. High near 77. Southeast wind around 5 mph becoming calm in the morning. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 3am. Areas of fog between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Friday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 82. Light west wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 30%.

Friday Night: A slight chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 56. West wind 3 to 6 mph. Chance of precipitation is 20%.

Saturday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 77. West wind 5 to 11 mph. Chance of precipitation is 30%.

Saturday Night: A chance of showers before 9pm. Partly cloudy, with a low around 56. Southwest wind around 6 mph. Chance of precipitation is 30%.

Sunday: A chance of showers after 10am. Mostly sunny, with a high near 76. West wind 6 to 11 mph. Chance of precipitation is 40%.