A Severe Thunderstorm Watch has been issued for Stephenson, Jo Daviess, Carroll and Green counties until 7pm Thursday evening. A line of thunderstorms continue to move east/southeast from Minnesota into Wisconsin and Iowa Thursday afternoon. The overall line has weakened slightly but will be moving into an environment that has quite a bit of energy and instability. While a couple severe thunderstorm warnings are present along the northern edge of this line, it’s possible storms could re-intensify as they move into southern Wisconsin and far northern Illinois. If so large hail, damaging winds and very heavy rain would be the primary concerns.
Most of the storm activity will remain along and north of Highway 20, however, further development southward is possible as storms move into southwest Wisconsin.