The National Weather Service has posted a Severe Thunderstorm Watch for all of Connecticut until 9 p.m. Wednesday.

According to its hourly forecast, the best chance of thunderstorms is between 4 and 7 p.m.

“A cold front sweeps across New England later this afternoon and evening with scattered showers and thunderstorms,” the NWS said.

“Instability has been increasing ahead of the front, and this combined with modest deep layer shear will result in the potential for strong to severe thunderstorms this afternoon. The primary threat with any thunderstorms today will be strong damaging winds and small hail, but an isolated tornado cannot beruled out, especially north of NYC.”

This afternoon: A chance of showers and thunderstorms, mainly after 4 p.m. Partly sunny, with a high near 83. South wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 30 percent. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: A chance of showers and thunderstorms, mainly before 8 p.m. Partly cloudy, with a low around 57. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 30 percent. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

To track the storms on radar, click HERE.