The tornado watches have been issued for Hartford, Tolland and Windham counties and are in effect until 11 p.m.
The quickly-moving storms are moving at about 50 miles per hour.
Power outages have been reported in the Western part of the state.
Prepare for possible damaging straight-lined winds and large hail. Wind gusts could be as high as 60 miles per hour.
If you are experiencing this dangerous weather go to a safe place in the middle of the lowest floor of your home and stay away from windows.
Once the front passes the humidity will drop tonight, Wednesday promises sunny, warm and dry weather, perfect for the concert at the gazebo.