UPDATE 7:15PM
The National Weather Service has reissued a thunderstorm watch for Walworth County until 8pm Saturday night.
UPDATE 6:30pm
The National Weather Service has reissued a thunderstorm watch for Walworth and Jefferson Counties until 8pm Saturday night.
The National Weather Service had issued a tornado warning for Walworth county, which started at about 6pm and ended at 6:30 pm.
Stay tuned to WTMJ for further updates as the system progresses. For an interactive radar click here