◆ LAPHAM PEAK STATE PARK, WI HAIL HISTORY · WAUKESHA COUNTY
Lapham Peak State Park, WI hail history & hail map
Lapham Peak State Park, Wisconsin has had 3 hail events in the past 5 years, with hail up to 1.50″ (Ping Pong Ball). Most recent: Jul 27, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
3Hail events in the past 5 years
1.50″Largest recorded hail · Ping Pong Ball
1.25″Largest ground report (within 3 mi)
1.50″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Lapham Peak State Park, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Lapham Peak State Park
| Date | Peak hail | Sources |
|---|---|---|
| Jul 27, 2026 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| May 15, 2025 | 1.00″ Quarter | Radar 0.75″ · 1 ground report (max 1.00″) |
| Jun 13, 2022 | 1.50″ Ping Pong Ball | Radar 1.50″ · 2 ground reports (max 1.25″) |
More Wisconsin hail history
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Events count days with NOAA MRMS radar hail over Lapham Peak State Park (43.020, -88.370) or an NWS / CoCoRaHS hail report within 3 miles. Data window: NOAA MRMS radar hail swaths Oct 2021 – Nov 2026; NWS / NCEI Storm Events reports Nov 2024 – Jul 2026; CoCoRaHS volunteer reports Oct 2021 – present. Radar hail sizes are estimates, not ground truth; hail at any single address can differ.