DENVER/BOULDER, CO
Peak mapped hail up to 4.50 inches struck near 7 miles southeast of Last Chance, CO; tornado reports affected near 3 miles west-northwest of Thurman, CO. Verified with 9 NWS warnings and 2 official hail reports.
HailMapr validation score
0.0% from 2 official hail reports
0 reports aligned with the mapped swath and estimated hail size
50.0% from 10 unofficial hail reports
5 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; tornado reports affected near 3 miles west-northwest of Thurman, CO. Verified with 9 NWS warnings and 2 official hail reports. The HailMapr storm footprint covers about 594.6 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 0.0%, based on trusted hail reports compared with the mapped hail footprint and predicted hail size. The unofficial HailMapr accuracy score is 50.0%, 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