HailEvidence → hail history → Mason City, IL
Mason City, IL 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 Mason City city centroid, 1950 to present.
Hail by year — last 15 years
| Year | Hail events ≤ 10 mi | Largest hail |
|---|---|---|
| 2026 | 0 | — |
| 2025 | 0 | — |
| 2024 | 5 | 1.75" (golf ball) |
| 2023 | 0 | — |
| 2022 | 0 | — |
| 2021 | 0 | — |
| 2020 | 0 | — |
| 2019 | 0 | — |
| 2018 | 0 | — |
| 2017 | 0 | — |
| 2016 | 0 | — |
| 2015 | 1 | 1.00" (quarter) |
| 2014 | 0 | — |
| 2013 | 0 | — |
| 2012 | 1 | 1.00" (quarter) |
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
- 96 thunderstorm-wind events, strongest 85 mph, most recent 2025-07-25.
- 22 tornado events, most recent 2025-09-20.
Most recent recorded events
| Date | Type | Magnitude | Distance |
|---|---|---|---|
| 2025-09-20 | Tornado | EF0 | 2.2 mi |
| 2025-07-25 | Thunderstorm Wind | 60 mph | 9.4 mi |
| 2025-06-18 | Tornado | EF0 | 2.4 mi |
| 2025-05-15 | Thunderstorm Wind | 70 mph | 10 mi |
| 2025-04-20 | Thunderstorm Wind | 60 mph | 9.2 mi |
| 2025-03-21 | Thunderstorm Wind | 60 mph | 8.2 mi |
| 2024-03-31 | Hail | 1.00" | 8.5 mi |
| 2024-03-31 | Thunderstorm Wind | 60 mph | 8.5 mi |
| 2024-03-31 | Thunderstorm Wind | 60 mph | 9.5 mi |
| 2024-03-31 | Hail | 1.75" | 9.4 mi |
2025-09-20: “A tornado touched down in a field 2 miles east-northeast of Mason City at 3:09 PM CDT. It tracked slowly southeastward through fields causing minor tree damage before crossing Highway 10 and dissipating 2 miles west of New Holland at 3:15 PM CDT.”
2025-07-25: “Tree branches were blown down.”
2025-06-18: “A brief EF-0 tornado occurred approximately two miles northeast of Mason City. The tornado knocked over one tree, and also blew down a few tree limbs and corn along County Road 1200 N before dissipating.”
Disputing a claim at a Mason City 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