Iowa · April 17, 2026

Iowa hail map — April 17, 2026

NOAA radar detected hail of an inch or more over 1 Iowa city on April 17, 2026. The largest stones — 1.00″, quarter size — fell over Marshalltown.

Hail swath map for Marshalltown, IA on April 17, 2026 showing 1.00 inch hail.
Swath over Marshalltown on April 17, 2026 — 1.00″ hail. Each city below has its own map for this storm.
Cities hit
1
in Iowa
Largest stone
1.00″
quarter size
Impact rating
3/10
from stone size

Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

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Iowa cities hit on April 17, 2026

Marshalltown, IA1.00″ · quarter

What people on the ground measured in Iowa on April 17, 2026

12 reports filed with the National Weather Service — 4 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

  • 2.50″ hen egg size Public
    3 ENE Russell, IA2:55 PM CDTLucas County

    Time and location estimated from radar.

  • 2.50″ hen egg size Public
    Toledo, IA3:10 PM CDTTama County

    Time estimated from radar.

  • 2.50″ hen egg size Storm Chaser
    Tama, IA3:14 PM CDTTama County
  • 2.00″ hen egg size Trained Spotter
    Toledo, IA3:16 PM CDTTama County
  • 1.75″ golf ball size Public
    Melbourne, IA2:39 PM CDTMarshall County
  • 1.75″ golf ball size Public
    4 NNE Lambs Grove, IA2:50 PM CDTJasper County

    Delayed report - time and location estimated from radar.

  • 1.75″ golf ball size Emergency Mngr
    1 ESE Lambs Grove, IA2:50 PM CDTJasper County
  • 1.75″ golf ball size Law Enforcement
    4 WNW Reasnor, IA2:51 PM CDTJasper County

    Time estimated on radar.

  • 1.75″ golf ball size Public
    1 E Russell, IA2:55 PM CDTLucas County

    Delayed report - time and location estimated from radar.

  • 1.75″ golf ball size Trained Spotter
    Tama, IA3:05 PM CDTTama County

    Delayed report - time estimated from radar. Spotter reports of quarter to golf ball sized hail.

  • 1.75″ golf ball size Emergency Mngr
    Toledo, IA3:10 PM CDTTama County
  • 1.75″ golf ball size Public
    Tama, IA3:15 PM CDTTama County

    Delayed report - time and location estimated from radar.

Showing the 12 largest of 58 hail reports filed that day.

Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.

Other states hit on April 17, 2026

Oklahoma2 cities · 2.00″Wisconsin2 cities · 1.50″Illinois2 cities · 1.50″Kansas3 cities · 1.00″Missouri4 cities · 1.00″Minnesota2 cities · 1.00″
The full US hail map for April 17, 2026 →

Other Iowa hail days

August 12, 20262 cities · 1.00″August 7, 20262 cities · 1.00″July 27, 20263 cities · 1.00″July 21, 20261 city · 1.00″July 20, 20267 cities · 1.50″July 4, 20261 city · 1.00″July 3, 20263 cities · 1.00″July 2, 20267 cities · 1.00″July 1, 20261 city · 1.50″June 30, 20261 city · 1.00″June 28, 20262 cities · 1.00″June 17, 20261 city · 1.00″
Every hail day across Iowa →
FAQ

Iowa hail on April 17, 2026

NOAA radar put hail of an inch or more over 1 Iowa city that day. The largest stones — 1.00 inches, quarter size — were over Marshalltown. Every city hit is listed above with its own stone size.

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