◆ FLAT ROCK, IL HAIL HISTORY · CRAWFORD COUNTY
Flat Rock, IL hail history & hail map
Flat Rock, Illinois has had 2 hail events in the past 5 years, with hail up to 1.00″ (Quarter). Most recent: Jun 21, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
2Hail events in the past 5 years
1.00″Largest recorded hail · Quarter
1.00″Largest ground report (within 3 mi)
—Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Flat Rock, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Flat Rock
| Date | Peak hail | Sources |
|---|---|---|
| Jun 21, 2026 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Mar 23, 2026 | 1.00″ Quarter | 1 ground report (max 1.00″) |
More Illinois hail history
All Illinois cities & hail days →
Events count days with NOAA MRMS radar hail over Flat Rock (38.880, -87.690) 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.