Event narrative (NOAA)
A supercell thunderstorm produced baseball and softball size hail in Port Edwards and Wisconsin Rapids. A 5.5 inch diameter hailstone that fell at Port Edwards was the second largest hailstone ever measured in Wisconsin. (The record largest hailstone in Wisconsin is 5.7 inches in diameter, which fell in Wausau on May 22, 1921.) Approximately 6,000 house and business roofs sustained at least minor damage. Over 500 vehicles were also damaged. Nine schools in the area sustained damage of $6.9 million alone. Total property damage was estimated at $45 million.
Other notable hail events in Wisconsin
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.