Nationwide Daily Hail, Wind & Tornado Map - April 27, 2026
Peak mapped hail up to 4.00 inches struck near 8 miles south-southwest of Piney Park, MO; damaging wind peaked at 92 mph near Latham, IL; tornado reports affected near Hallowell, KS. Other affected states included AR, CO, FL, IA, IN, KY and more. Verified with 117 official hail reports.
HailMapr validation score
62.4% from 117 official hail reports
73 reports aligned with the mapped swath and estimated hail size
70.5% from 217 unofficial hail reports
153 reports aligned with the mapped swath and estimated hail size
Storm description
Peak mapped hail up to 4.00 inches struck near 8 miles south-southwest of Piney Park, MO; damaging wind peaked at 92 mph near Latham, IL; tornado reports affected near Hallowell, KS. Other affected states included AR, CO, FL, IA, IN, KY and more. Verified with 117 official hail reports. The HailMapr storm footprint covers about 45789.6 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 62.4%, based on trusted hail reports compared with the mapped hail footprint and predicted hail size. The unofficial HailMapr accuracy score is 70.5%, 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