HailEvidence → hail history → Lake Koshkonong, WI
Lake Koshkonong, WI hail history
Every figure below is from the NOAA NCEI Storm Events Database — the official NWS record — counting events recorded within 10 miles of the Lake Koshkonong city centroid, 1950 to present.
Hail by year — last 15 years
| Year | Hail events ≤ 10 mi | Largest hail |
|---|---|---|
| 2026 | 0 | — |
| 2025 | 14 | 2.75" (baseball) |
| 2024 | 2 | 1.00" (quarter) |
| 2023 | 5 | 1.50" (ping pong ball) |
| 2022 | 8 | 2.50" (tennis ball) |
| 2021 | 4 | 1.00" (quarter) |
| 2020 | 0 | — |
| 2019 | 1 | 1.00" (quarter) |
| 2018 | 0 | — |
| 2017 | 2 | 1.00" (quarter) |
| 2016 | 2 | 1.50" (ping pong ball) |
| 2015 | 0 | — |
| 2014 | 3 | 1.75" (golf ball) |
| 2013 | 0 | — |
| 2012 | 2 | 1.75" (golf ball) |
Note: the current and prior year reflect the latest NCEI compile and grow as NWS finalizes reports; same-day activity appears on this site's storm-day pages before it reaches this table.
Wind and tornado record
- 143 thunderstorm-wind events, strongest 92 mph, most recent 2025-03-14.
- 28 tornado events, most recent 2024-05-26.
Most recent recorded events
| Date | Type | Magnitude | Distance |
|---|---|---|---|
| 2025-04-18 | Hail | 1.75" | 5.3 mi |
| 2025-04-18 | Hail | 2.50" | 6.9 mi |
| 2025-04-18 | Hail | 1.75" | 6.9 mi |
| 2025-04-18 | Hail | 1.75" | 3.7 mi |
| 2025-04-18 | Hail | 2.75" | 6.7 mi |
| 2025-04-18 | Hail | 2.00" | 3.8 mi |
| 2025-04-18 | Hail | 2.50" | 4.6 mi |
| 2025-04-18 | Hail | 1.25" | 7.6 mi |
| 2025-04-18 | Hail | 1.00" | 6.7 mi |
| 2025-04-18 | Hail | 1.25" | 4.1 mi |
2025-04-18: “Golf ball sized hail, some even large. Car dents and tree damage.”
2025-04-18: “Picture provided.”
2025-04-18: “Tennis ball sized hail.”
Disputing a claim at a Lake Koshkonong address?
This page covers the city. A claim dispute needs the record around your address: every NWS-recorded event within 1, 3 and 10 miles, the disputed date highlighted, citations formatted for an insurance appeal.
Verify an address — $29source: NOAA NCEI Storm Events computed 2026-06-12