How big was the hail on April 27, 2024?

The maximum estimated stone size anywhere in the country that day was 1.50 inches, over Ponca City, OK. 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.

Where does this hail data come from?

NOAA radar, ingested directly from the public NOAA archive. The estimated stone size runs about a quarter of an inch against ground truth, which makes it good for deciding where to look and not a substitute for an inspection.

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 a whole state on a real interactive map, with this swath and three years of others already on it. From $79/mo, and the canvassing tools come with it.

United States · April 27, 2024

Hail map — April 27, 2024

Name: US hail map — April 27, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 8 cities across 4 states on April 27, 2024. The largest stones — 1.50″, half dollar size — fell over Ponca City, OK.

Hail swath map for Ponca City, OK on April 27, 2024 showing 1.50 inch hail. — Largest rendered swath of the day: Ponca City, OK — 1.50″ hail. Each city below has its own map for this storm.

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The April 27, 2024 swath — and every other storm since 2023 across your state
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States hit: 4
Cities hit: 8
Largest stone: 1.50″; half dollar size
Impact rating: 5/10; from stone size

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

Homeowners

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This page covers your area 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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States hit on April 27, 2024

Every state where NOAA radar put an inch or more of hail over a city that day, biggest stone first.

Oklahoma4 cities · 1.50″Texas2 cities · 1.00″Iowa1 city · 1.00″Wisconsin1 city · 1.00″

Hardest hit on April 27, 2024

Ponca City, OK1.50″ · half dollar Wichita Falls, TX1.00″ · quarter Dubuque, IA1.00″ · quarter Enid, OK1.00″ · quarter Stillwater, OK1.00″ · quarter Big Spring, TX1.00″ · quarter Ardmore, OK1.00″ · quarter Watertown, WI1.00″ · quarter

What people on the ground measured in the US on April 27, 2024

15 reports filed with the National Weather Service — 6 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

3.00″ baseball size Fire Dept/Rescue
Fox, OK9:10 PM CDTCarter County
Corrects previous hail report from Fox for time to be radar estimate. NWSChat Report.
3.00″ baseball size Fire Dept/Rescue
Fox, OK9:42 PM CDTCarter County
NWSChat Report.
2.75″ baseball size Emergency Mngr
5 W Knox City, TX2:47 PM CDTKnox County
2.75″ baseball size Public
3 ESE Ceresco, NE3:02 PM CDTSaunders County
Delayed report from 4/26.
2.50″ hen egg size Trained Spotter
1 SE Blackwell, OK2:42 PM CDTKay County
Multiple Twitter Photos.
2.50″ hen egg size Public
Ponca City, OK7:35 PM CDTKay County
picture on broadcast TV with measurement, time is radar estimated.
2.25″ hen egg size Public
2 W Tonkawa, OK2:32 PM CDTKay County
Report from mPING, time is radar estimated.
2.00″ hen egg size NWS Employee
3 E Grinnell, KS7:28 PM CDTGove County
Corrects previous hail report from 3 E Grinnell. Report from mPING: Hen Egg (2.00 in.). Hail ranged in size from one to two inches in diameter and fell for a duration of 2-3 minutes.
2.00″ hen egg size Public
2 E Grinnell, KS7:28 PM CDTGove County
Golf ball and egg sized hail reported.
2.00″ hen egg size NWS Employee
3 E Grinnell, KS7:32 PM CDTGove County
Report from mPING: Hen Egg (2.00 in.). Hail ranged in size from one to two inches in diameter and fell for a duration of 2-3 minutes.
2.00″ hen egg size Public
Onekama, MI9:15 PM EDTManistee County
Images shared on social media from Zosel St. in Onekama of measured 2 inch hail. Damage to vehicles and home siding. Time estimated from radar.
1.75″ golf ball size Emergency Mngr
3 SW Seiling, OK11:19 AM CDTDewey County
1.75″ golf ball size Emergency Mngr
3 SSW Seiling, OK11:19 AM CDTDewey County
1.75″ golf ball size Public
1 N Tonkawa, OK2:35 PM CDTKay County
Report from mPING.
1.75″ golf ball size Public
1 WNW Maitland, MO3:00 PM CDTHolt County
Golf ball-sized hail along HWY 113 at 3PM.

Showing the 15 largest of 187 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 hail days

September 30, 20261 city · 2.00″September 28, 20261 city · 1.00″September 27, 20264 cities · 1.00″September 26, 20261 city · 1.00″September 25, 20263 cities · 1.00″September 23, 20262 cities · 1.00″September 22, 202617 cities · 1.00″September 21, 202665 cities · 2.00″September 20, 20268 cities · 1.50″September 19, 202637 cities · 1.50″September 18, 202623 cities · 2.00″September 17, 202619 cities · 1.50″

Every state with hail on record →

FAQ

US hail on April 27, 2024

NOAA radar put hail of an inch or more over 8 cities across 4 states on April 27, 2024. The largest stones — 1.50 inches, half dollar size — were over Ponca City, OK. Every state hit is listed on this page, and every city under it.

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