How big was the hail on March 30, 2026?

The maximum estimated stone size anywhere in Iowa that day was 1.00 inches. Sizes vary street to street inside a single swath, so a city's figure is the largest radar estimated anywhere within about 5 miles of it.

Does this mean roofs were damaged?

Radar measures stone size, not damage. Whether a particular roof was damaged depends on stone size, wind direction, roof age and material — only an inspection settles it. These figures tell you where it is worth looking.

How do I see the actual swath on a map?

A HailMate plan puts the whole of Iowa on a real interactive map with this swath and three years of others already on it. $79/mo, and the canvassing tools come with it.

Iowa · March 30, 2026

Iowa hail map — March 30, 2026

Name: Iowa hail map — March 30, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 2 Iowa cities on March 30, 2026. The largest stones — 1.00″, quarter size — fell over Urbandale.

Hail swath map for Urbandale, IA on March 30, 2026 showing 1.00 inch hail. — Swath over Urbandale on March 30, 2026 — 1.00″ hail. Each city below has its own map for this storm.

Cities hit: 2; 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.

Roofing contractors

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All of Iowa at street level, with this storm already on it
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Homeowners

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This page covers Iowa as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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Iowa cities hit on March 30, 2026

Urbandale, IA1.00″ · quarter Johnston, IA1.00″ · quarter

What people on the ground measured in Iowa on March 30, 2026

12 reports filed with the National Weather Service — 5 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.

1.25″ half dollar size Public
1 W Waukee, IA10:34 PM CDTDallas County
1.00″ quarter size Trained Spotter
6 ENE Marne, IA8:41 PM CDTCass County
1.00″ quarter size Emergency Mngr
2 S Minburn, IA9:49 PM CDTDallas County
1.00″ quarter size Public
2 W Ankeny, IA10:16 PM CDTPolk County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Amateur Radio
Ankeny, IA10:17 PM CDTPolk County
1.00″ quarter size Public
Waukee, IA10:34 PM CDTDallas County
1.00″ quarter size Public
1 SSE Waukee, IA10:35 PM CDTDallas County
1.00″ quarter size Public
2 NNE Windsor Heights, IA10:45 PM CDTPolk County
0.88″ penny size Emergency Mngr
3 N Minburn, IA9:49 PM CDTDallas County
0.88″ penny size Trained Spotter
2 WNW Ankeny, IA10:15 PM CDTPolk County
0.75″ penny size Trained Spotter
1 WNW Johnston, IA10:12 PM CDTPolk County
0.75″ penny size Public
3 NNE Ankeny, IA10:20 PM CDTPolk County
Also with a measured 56 mph wind gust.

Showing the 12 largest of 17 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 March 30, 2026

Illinois34 cities · 1.50″

The full US hail map for March 30, 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 March 30, 2026

NOAA radar put hail of an inch or more over 2 Iowa cities that day. The largest stones — 1.00 inches, quarter size — were over Urbandale. Every city hit is listed above with its own stone size.

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