A tornado watch has been issued for northern Connecticut through 10 p.m.
That means conditions are favorable for a tornado.
Severe thunderstorm warnings are in effect for Hartford, Tolland, Windham, Fairfield, New Haven and Middlesex counties.
Thunderstorms that roll in Friday evening could reach severe levels, bringing possible hail, strong winds, heavy rain, and lightning. It appears the worst of the storms will move through the state through midnight.
Parts of northern Connecticut along the Mass. border could see the highest risk of storms. The National Weather Service's Storm Prediction Center has parts of northwest Litchfield County in the elevated "enhanced" risk category.
The weekend looks better with mostly sunny skies for Saturday and Sunday.
Next week will bring less sunshine and more rain.