HailEvidence → hail history → Rock Falls, IA
Rock Falls, IA 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 Rock Falls city centroid, 1950 to present.
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Hail by year — last 15 years
| Year | Hail events ≤ 10 mi | Largest hail |
|---|---|---|
| 2026 | 0 | — |
| 2025 | 2 | 1.00" (quarter) |
| 2024 | 3 | 1.00" (quarter) |
| 2023 | 2 | 1.00" (quarter) |
| 2022 | 1 | 1.00" (quarter) |
| 2021 | 0 | — |
| 2020 | 2 | 1.00" (quarter) |
| 2019 | 1 | 0.88" (nickel) |
| 2018 | 9 | 1.75" (golf ball) |
| 2017 | 7 | 1.50" (ping pong ball) |
| 2016 | 7 | 1.25" (half dollar) |
| 2015 | 0 | — |
| 2014 | 1 | 0.88" (nickel) |
| 2013 | 13 | 1.75" (golf ball) |
| 2012 | 6 | 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
- 147 thunderstorm-wind events, strongest 92 mph, most recent 2025-07-27.
- 28 tornado events, most recent 2022-04-12.
Most recent recorded events
| Date | Type | Magnitude | Distance |
|---|---|---|---|
| 2025-09-22 | Hail | 1.00" | 8.5 mi |
| 2025-07-27 | Thunderstorm Wind | 58 mph | 6.4 mi |
| 2025-07-27 | Thunderstorm Wind | 71 mph | 7.4 mi |
| 2025-07-27 | Thunderstorm Wind | 67 mph | 1.5 mi |
| 2025-07-27 | Thunderstorm Wind | 64 mph | 7 mi |
| 2025-04-28 | Hail | 0.88" | 6.7 mi |
| 2024-10-24 | Hail | 0.88" | 7 mi |
| 2024-10-24 | Hail | 1.00" | 6.9 mi |
| 2024-10-24 | Hail | 0.88" | 6.1 mi |
| 2024-05-21 | Thunderstorm Wind | 70 mph | 6.9 mi |
2025-09-22: “Delayed report, time estimated by radar.”
2025-07-27: “Emergency management reported trees down in Nora Springs.”
2025-07-27: “Trees and Branches down in Mason City. Report of at least one tree on a vehicle. Several power poles on fire.”
Disputing a claim at a Rock Falls address?
This page covers the city. A claim is argued about one property, so start with the free address check — it counts the recorded events around your address, not the city centroid.
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Type a street address. We measure it against every hail
event the National Weather Service recorded in the last 10 years and show you how many fall
within 1, 3 and 10 miles — free, instantly, nothing stored. Rural property with no street address?
Enter coordinates as 44.05, -107.31.
Address lookup by the U.S. Census Bureau geocoder. Records: NOAA NCEI Storm Events (final) plus SPC preliminary reports for storms newer than the latest compile — see methodology.
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source: NOAA NCEI Storm Events computed 2026-07-25