Storm detail

QUAD CITIES, IA

Peak mapped hail up to 1.31 inches struck near 1 mile north-northwest of Bettendorf, IA. Other affected states included IL. Verified with 3 NWS warnings and 1 official hail report.

Affected statesIA, IL
Peak hail1.31 in
Reports1 official · 1 unofficial
Storm attributesHail
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 100.0%

100.0% from 1 official hail report

1 report aligned with the mapped swath and estimated hail size

Unofficial score 100.0%

100.0% from 1 unofficial hail report

1 report aligned with the mapped swath and estimated hail size

Storm description

Peak mapped hail up to 1.31 inches struck near 1 mile north-northwest of Bettendorf, IA. Other affected states included IL. Verified with 3 NWS warnings and 1 official hail report. The HailMapr storm footprint covers about 61.9 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 100.0%, based on trusted hail reports compared with the mapped hail footprint and predicted hail size. The unofficial HailMapr accuracy score is 100.0%, giving a separate read on public and lower-confidence hail reports without mixing them into the official score.

Storm snapshot

Date windowMay 18, 2026 3:17 AM to May 18, 2026 4:45 AM CST
Mapped area61.9 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