US Hail Map
Where it hailed in the last 12 months, county by county, from official NOAA Storm Prediction Center reports. Click a county for its storm log.
5,547 verified hail reports across 1,650 counties, with the largest reported hail — 6.1" — in Kankakee County, IL. Shading counts reports, not hail size: a county with many quarter-size reports shades hotter than one softball report. The hail size chart explains the sizes; the state rankings weight severity.
Did it hail at a specific address?
This map stops at the county line. The app checks any US address against verified hail reports and hail-warned polygons — including the most recent 30 days. Free account.
Check an address free →Top 25 hail counties
| # | County | State | Hail reports | Largest |
|---|---|---|---|---|
| 1 | Kit Carson County | Colorado | 27 | 4" |
| 2 | Sedgwick County | Kansas | 23 | 1.75" |
| 3 | Washington County | Colorado | 21 | 4.5" |
| 4 | Cherry County | Nebraska | 21 | 3.5" |
| 5 | Grundy County | Missouri | 21 | 3" |
| 6 | Greene County | Missouri | 20 | 4.75" |
| 7 | Cook County | Illinois | 20 | 2" |
| 8 | Johnson County | Kansas | 20 | 1.75" |
| 9 | Dane County | Wisconsin | 19 | 4" |
| 10 | Grayson County | Texas | 18 | 3.5" |
| 11 | Harding County | South Dakota | 18 | 3.25" |
| 12 | Pennington County | South Dakota | 18 | 3" |
| 13 | Tarrant County | Texas | 18 | 3" |
| 14 | Sheridan County | Nebraska | 17 | 4.5" |
| 15 | Sherman County | Kansas | 17 | 2.75" |
| 16 | Custer County | South Dakota | 16 | 3.6" |
| 17 | El Paso County | Colorado | 16 | 2.5" |
| 18 | Morgan County | Colorado | 15 | 3" |
| 19 | Will County | Illinois | 15 | 3" |
| 20 | Butler County | Kansas | 15 | 2" |
| 21 | Arapahoe County | Colorado | 15 | 1.75" |
| 22 | Dickinson County | Kansas | 15 | 1.75" |
| 23 | DuPage County | Illinois | 14 | 4.8" |
| 24 | Sumner County | Kansas | 14 | 3.5" |
| 25 | Logan County | Colorado | 14 | 3.2" |
Hail map by state
Ordered by verified hail reports over the last 12 months. Each state page has its own county map, Top 5 hail leaderboard, and live radar.
How to read a hail map
Reports, not radar. This map counts ground-truth observations: someone saw hail and reported its size. Radar-estimated hail maps (which many services sell) infer hail from reflectivity and can show hail where none fell, or miss hail under a weak return. The two are complementary; IDOLCheck pages show both — verified reports here and radar snapshots on each county's storm log.
Population bias is real. Dense counties have more spotters, so they report more. A quiet rural county next to a hot suburban one often saw the same storm. That is why the address-level check matters more than the county shade.
Size vs. frequency. One 3" stone is a bigger event than ten 1" reports, but the ten reports shade hotter here. Use the Largest column above and the size leaderboards on state pages for severity.
Where the boundaries come from. County shapes are US Census Bureau cartographic boundaries (1:20,000,000). Alaska and Hawaii are inset at the standard Albers-USA positions.
Hail map questions
What does this hail map show?
Each county is shaded by the number of verified hail reports filed with the NOAA Storm Prediction Center over the last 12 months. Reports come from trained spotters, emergency managers, and National Weather Service offices and record the largest hailstone observed. Click any shaded county for its day-by-day storm log.
Why does my county show no hail when I saw hail?
SPC reports depend on someone observing and reporting the hail. Small or brief hail in rural areas is often never filed. NWS warnings that cited hail also appear on the county pages, and an address-level check in the app tests whether a property was inside a hail-warned polygon.
How current is the map?
County data refreshes from HailyDB every few hours and the window rolls forward daily. Events from the most recent 30 days are counted here but shown at county level only; exact dates and locations unlock after 30 days, or immediately in the IDOLCheck app.
Can I see a hail map for a specific address?
Yes. The IDOLCheck app checks any US address against verified hail reports and warning boundaries, including the most recent 30 days. It is free to create an account.
Map built Sep 11, 2026 from HailyDB. Source: NOAA Storm Prediction Center storm reports. Informational only — not a substitute for verifying official storm records.