UPDATE 3: The warning in Hartford County has been cancelled, but the one in Tolland will continue until 6:45 p.m.
UPDATE 2: There is now severe thunderstorm warnings in northern Hartford and Tolland Counties until 6:45 p.m.
UPDATE: There is a severe thunderstorm warning for the northern part of Tolland County until 5 p.m.
The National Weather Service issued a severe thunderstorm watch for three Connecticut counties Monday afternoon.
Hartford, Tolland, and Windham counties are under the watch until 8 p.m.
Matt Scott will have more on the weather on the Fox CT News at 4 and 5 p.m.