Iowa · April 18, 2025

Iowa hail map — April 18, 2025

NOAA radar detected hail of an inch or more over 1 Iowa city on April 18, 2025. The largest stones — 1.00″, quarter size — fell over Sioux City.

Hail swath map for Sioux City, IA on April 18, 2025 showing 1.00 inch hail.
Swath over Sioux City on April 18, 2025 — 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 18, 2025

Sioux City, IA1.00″ · quarter

What people on the ground measured in Iowa on April 18, 2025

12 reports filed with the National Weather Service — 3 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.

  • 2.75″ baseball size Public
    2 NW Waverly, IA3:51 AM CDTBremer County

    Photos of baseball sized hail north of Waverly. Time is estimated from radar.

  • 2.50″ hen egg size Public
    6 N Clarksville, IA5:07 AM CDTButler County

    photos of tennis ball sized hail.

  • 2.00″ hen egg size Public
    2 NNW Waverly, IA3:52 AM CDTBremer County

    Photo posted to social media. Time estimated from radar.

  • 2.00″ hen egg size Emergency Mngr
    1 NW Charles City, IA4:55 AM CDTFloyd County
  • 1.75″ golf ball size Public
    3 S Larrabee, IA1:02 AM CDTCherokee County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.75″ golf ball size Law Enforcement
    1 WSW Hampton, IA3:12 AM CDTFranklin County

    Golf ball hail throughout Hampton.

  • 1.75″ golf ball size Emergency Mngr
    Hampton, IA3:17 AM CDTFranklin County

    Picture of numerous hailstones close to golf ball size. Occurred over several minutes.

  • 1.75″ golf ball size Public
    4 S Plainfield, IA3:50 AM CDTBremer County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.50″ half dollar size Public
    5 W Tripoli, IA4:00 AM CDTBremer County
  • 1.50″ half dollar size Trained Spotter
    Tripoli, IA4:06 AM CDTBremer County

    Numerous hailstones pictured with largest ping pong ball size.

  • 1.50″ half dollar size Public
    3 ENE Floyd, IA4:54 AM CDTFloyd County
  • 1.50″ half dollar size Public
    Charles City, IA4:55 AM CDTFloyd County

Showing the 12 largest of 34 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 18, 2025

Mississippi1 city · 1.50″Wisconsin2 cities · 1.50″Oklahoma2 cities · 1.00″Arkansas1 city · 1.00″
The full US hail map for April 18, 2025 →

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 18, 2025

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 Sioux City. Every city hit is listed above with its own stone size.

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