Storm detail

OMAHA, NE

Peak mapped hail up to 3.50 inches struck near 1 mile west of Palmer, NE; damaging wind peaked at 101 mph near Correctionville, IA; tornado reports affected near 2 miles west of Davis, SD. Other affected states included KS, MN, MO, WI. Verified with 524 NWS warnings and 38 official hail reports.

Affected statesIA, KS, MN, MO, NE, SD, WI
Peak hail3.14 in
Reports38 official · 64 unofficial
Storm attributesHail · Wind · Tornado
Single-map price$59.99
Core ReplayIncluded
Includes HailMapr Core Replay for step-by-step storm playback across the event window.

HailMapr validation score

Official score 68.4%

68.4% from 38 official hail reports

26 reports aligned with the mapped swath and estimated hail size

Unofficial score 71.9%

71.9% from 64 unofficial hail reports

46 reports aligned with the mapped swath and estimated hail size

Storm description

Peak mapped hail up to 3.50 inches struck near 1 mile west of Palmer, NE; damaging wind peaked at 101 mph near Correctionville, IA; tornado reports affected near 2 miles west of Davis, SD. Other affected states included KS, MN, MO, WI. Verified with 524 NWS warnings and 38 official hail reports. The HailMapr storm footprint covers about 19627.7 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 68.4%, based on trusted hail reports compared with the mapped hail footprint and predicted hail size. The unofficial HailMapr accuracy score is 71.9%, giving a separate read on public and lower-confidence hail reports without mixing them into the official score.

Storm snapshot

Date windowMay 17, 2026 12:16 PM to May 18, 2026 1:07 AM CST
Mapped area19627.7 sq mi
Statusready

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