Marine Thunderstorm Wind · Lake Michigan

Power lines down on the lakeshroe in Bayside at 0625 CST and Mequon at 0632 CST.

Numerous thunderstorms developed during the early morning hours of June 21st, producing mainly damaging winds. A couple thunderstorms moved out over the Wisconsin nearshore waters and open waters between 0600CST and 0800CST and produced wind gusts between 38 and 52 knots. Synoptically, thunderstorms developed along a warm front that extended from northeast Iowa, into southern Wisconsin and across Lake Michigan into Lower Michigan. A layer of drier air aloft contributed to the cause for wind damaging thunderstorms.