National Weather Service United States Department of Commerce


A cold front moved it's way south across Wisconsin on Tuesday with storms developing quickly over north-central Wisconsin shortly after sunrise. These storms quickly became severe in the NWS Green Bay forecast area. Large hail was reported in the Appleton area with hail approaching 4 inches in diameter. Storms continued south to southeast along the front and hail of 2 to 3 inches was reported in Fond du Lac. Additional storms developed along the southern flank of the front near Madison and produced hail around 1 inch. These southern storms continued to strengthen and hail closer to 2 inches was reported in Rock and Walworth counties. While the storms were very strong there was enough of a stable layer near the surface to prevent strong wind gusts from these storms from reaching the surface. These storms did produce very frequent and intense lightning and a couple of houses were struck and caught fire from the lightning strikes.

Large Hail up to 3" in Fond du Lac from Betsy Spaeth