Nationwide Daily Hail, Wind & Tornado Map - May 21, 2026
Peak mapped hail up to 4.50 inches struck near 7 miles southeast of Last Chance, CO; damaging wind peaked at 72 mph near 2 miles east of Shallow Water, KS; tornado reports affected near 4 miles north-northwest of Kimball, NE. Other affected states included AL, FL, GA, MS, NC, ND and more. Verified with 10 official hail reports.
HailMapr validation score
60.0% from 10 official hail reports
6 reports aligned with the mapped swath and estimated hail size
56.0% from 25 unofficial hail reports
14 reports aligned with the mapped swath and estimated hail size
Storm description
Peak mapped hail up to 4.50 inches struck near 7 miles southeast of Last Chance, CO; damaging wind peaked at 72 mph near 2 miles east of Shallow Water, KS; tornado reports affected near 4 miles north-northwest of Kimball, NE. Other affected states included AL, FL, GA, MS, NC, ND and more. Verified with 10 official hail reports. The HailMapr storm footprint covers about 8188.7 square miles and updates as new hail swaths, wind reports, and tornado reports are appended to the national live map. The official HailMapr accuracy score is 60.0%, based on trusted hail reports compared with the mapped hail footprint and predicted hail size. The unofficial HailMapr accuracy score is 56.0%, giving a separate read on public and lower-confidence hail reports without mixing them into the official score.
Storm snapshot
What you get
- HailMapr Core Replay with step-by-step hail-track playback
- Heatmap and polygon package for the event window
- Trusted hail report validation overlay
- Owned access that remains even if subscriptions end