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NWS: Severe T-storms with damaging winds possible

August 17, 2018

The National Weather Service says in addition to heat and high humidity, there is a chance of severe thunderstorms this afternoon and evening

“The primary threat is damaging winds, however an isolated tornado is also possible. There is also a low flash flood threat with the heaviest storms,” it says.

Its hourly forecast for siouthwest Connecticut has the best chance of thunderstorms between 7 p.m. and midnight.

High temperatures Friday will be in the upper 80s. High humidly levels will make it feel like in the mid-90s.

The Connecticut shoreline has a air quality alert that means that ground level ozone may approach or exceed unhealthy standards.

The highest levels of ozone are forecast for Greenwich, Westport, Stratford, New Haven, Madison, Middletown and Groton.

A heat advisory is in effect for the New York City area where the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees.

Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without airconditioning can be much hotter than outdoor temperatures.

On Saturday, it will be mostly cloudy with a chance of showers. Outdoor events like the Milford Oyster Festival should fine because the best chance of rain is after 5 p.m.

Sunday will also have clouds and again, a chance of showers.

The forecast

Today: A 30 percent chance of showers and thunderstorms, mainly after 4 p.m. Some storms could be severe, with damaging winds and heavy rain. Partly sunny, with a high near 87. Calm wind becoming south 5 to 9 mph in the afternoon.

Tonight: Showers and thunderstorms likely, mainly between 7 p.m and 1 a.m. Some storms could be severe, with damaging winds and heavy rain. Patchy fog after 4 a.m. Otherwise, cloudy, with a low around 73. Southwest wind 7 to 10 mph. Chance of precipitation is 60 percent. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers and thunderstorms likely, mainly after 5 p.m. Patchy fog before 9 a.m. Otherwise, cloudy, with a high near 85. West wind 6 to 8 mph. Chance of precipitation is 60 percent. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night: A chance of showers and thunderstorms. Cloudy, with a low around 69. Northeast wind 3 to 7 mph. Chance of precipitation is 40 percent.

Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 76. Northeast wind around 9 mph.

Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 64.

Monday: Partly sunny, with a high near 77.

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