Historical hail archive: January 2016–December 2025. NOAA radar estimates within 25 miles of each city centre. ZIP matches use the first three digits; this is not a property-level report or a live alert service. Coverage and source.
Annual report · generated from NOAA radar data
The 2021 hail year across 50 US metros
Radar detected hail over the metros we track on 1148 metro-days in 2021. 282 of those reached hen-egg size (2 in) or larger.
Data last refreshed: · source: NOAA NCEI Severe Weather Data Inventory, dataset nx3hail
Most hail days in 2021
When it fell
Hail seasons run earlier in the south and later in the northern plains, so a national month curve flattens something that is sharp in any one place. The per-metro pages show the local shape.
The fifteen biggest stones radar estimated in 2021
| Date | Metro | Radar max | Metric | Comparison |
|---|---|---|---|---|
| January 13, 2021 | Amarillo, TX | 4.00 in | 10.2 cm | Grapefruit |
| January 25, 2021 | Wichita Falls, TX | 4.00 in | 10.2 cm | Grapefruit |
| March 12, 2021 | Lubbock, TX | 4.00 in | 10.2 cm | Grapefruit |
| April 14, 2021 | Abilene, TX | 4.00 in | 10.2 cm | Grapefruit |
| April 15, 2021 | Austin, TX | 4.00 in | 10.2 cm | Grapefruit |
| April 29, 2021 | Fort Worth, TX | 4.00 in | 10.2 cm | Grapefruit |
| April 29, 2021 | Norman, OK | 4.00 in | 10.2 cm | Grapefruit |
| April 29, 2021 | Oklahoma City, OK | 4.00 in | 10.2 cm | Grapefruit |
| May 10, 2021 | Shreveport, LA | 4.00 in | 10.2 cm | Grapefruit |
| May 27, 2021 | Kansas City, MO | 4.00 in | 10.2 cm | Grapefruit |
| June 18, 2021 | Rochester, MN | 4.00 in | 10.2 cm | Grapefruit |
| June 24, 2021 | Grand Island, NE | 4.00 in | 10.2 cm | Grapefruit |
| June 27, 2021 | Lubbock, TX | 4.00 in | 10.2 cm | Grapefruit |
| July 9, 2021 | Des Moines, IA | 4.00 in | 10.2 cm | Grapefruit |
| July 10, 2021 | St. Louis, MO | 4.00 in | 10.2 cm | Grapefruit |
Radar estimates the largest stone the algorithm believes was aloft in the storm cell. Ground truth is smaller more often than it is larger, and it varies across a few hundred metres. How we handle that.
Common questions
What counts as a hail day in the 2021 report?
One UTC calendar day on which NEXRAD Level-III detected at least one hail signature within 25 miles of one of the 50 metro centroids we track. Two storms on the same day in the same metro count once.
Why is my city's total different from the news?
Media totals usually count storm reports — people phoning in what they saw — while this counts radar detections in a fixed radius. The two measure different things and neither is wrong.
Does a big number mean a bad claims year?
Not directly. Damage depends on where the hail landed, how big the stones were at ground level, and the age of the roofs underneath. A single well-placed storm over a dense suburb costs more than ten storms over farmland.
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