How big was the hail on July 17, 2024?

The maximum estimated stone size anywhere in the country that day was 1.50 inches, over Pasadena, TX. 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 MRMS radar, specifically the Maximum Estimated Size of Hail product, ingested directly from the public NOAA archive. It 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 · July 17, 2024

Hail map — July 17, 2024

Name: US hail map — July 17, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 8 cities across 4 states on July 17, 2024. The largest stones — 1.50″, half dollar size — fell over Pasadena, TX.

Hail swath map for Pasadena, TX on July 17, 2024 showing 1.50 inch hail. — Largest rendered swath of the day: Pasadena, TX — 1.50″ hail. Each city below has its own map for this storm.

States hit: 4
Cities hit: 8
Largest stone: 1.50″; half dollar size
Impact rating: 5/10; 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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HailMate's canvassing map: hail swaths colour-banded by stone size, from yellow through red to purple, laid over a satellite view of a Texas territory, with hail swath and territory controls.

Your whole state at street level, with this storm already on it
Three years of hail swaths, filterable by stone size
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Homeowners

Did hail hit your address?

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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Free, and no account needed to look it up. If hail did hit, you can ask for a free inspection from a vetted local roofer.

States hit on July 17, 2024

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

Texas3 cities · 1.50″Massachusetts3 cities · 1.50″Louisiana1 city · 1.00″Nebraska1 city · 1.00″

Hardest hit on July 17, 2024

Pasadena, TX1.50″ · half dollar North Chicopee, MA1.50″ · half dollar Holyoke, MA1.50″ · half dollar Deer Park, TX1.50″ · half dollar Chicopee, MA1.00″ · quarter Central, LA1.00″ · quarter Fremont, NE1.00″ · quarter Cloverleaf, TX1.00″ · quarter

What people on the ground measured in the US on July 17, 2024

15 reports filed with the National Weather Service — 1 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.

1.75″ golf ball size Trained Spotter
5 SE Wind Cave Visitors, SD1:19 PM CDTCuster County
1.75″ golf ball size Public
4 S Wind Cave Visitors, SD1:26 PM CDTCuster County
1.50″ half dollar size Public
7 W Agate, NE2:19 PM CDTSioux County
1.25″ half dollar size Law Enforcement
2 WSW Lusk, WY12:14 PM MDTNiobrara County
1.25″ half dollar size Public
8 S Hot Springs, SD1:58 PM CDTFall River County
1.00″ quarter size Public
3 ENE Neola, WV2:13 PM EDTGreenbrier County
1.00″ quarter size Public
12 S Hot Springs, SD2:30 PM CDTFall River County
Mostly smaller
1.00″ quarter size Amateur Radio
1 E Conway, NH5:30 PM EDTCarroll County
Reported by Amateur Radio.
1.00″ quarter size Amateur Radio
Granby, MA5:38 PM EDTHampshire County
Nickel to quarter sized hail reported in Granby. Time estimated by radar.
1.00″ quarter size 911 Call Center
Guyton, GA5:40 PM EDTEffingham County
Quarter size hail reported at Guyton Rd and Courthouse Rd.
1.00″ quarter size Public
Spring Twp, PA7:10 PM EDTBerks County
Report from mPING: Quarter (1.00 in.).
0.88″ penny size 911 Call Center
1 ENE Sharon Springs, KS5:26 PM CDTWallace County
Wallace County dispatch reported dime to nickel sized hail with some light/localized accumulation in Sharon Springs. Picture of accumulating hail observed on Facebook. Time estimated via radar.
0.88″ penny size Public
6 E Eckley, CO6:15 PM MDTYuma County
Delayed report via social media. Pea to nickel sized hail lasted for a duration of 5 minutes. Time radar and report estimated.
0.75″ penny size Public
Hot Springs, SD1:45 PM CDTFall River County
0.75″ penny size Public
2 SE Kit Carson, CO2:14 PM MDTCheyenne County
Report from mPING: Dime (0.75 in.).

Showing the 15 largest of 26 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

August 19, 202620 cities · 2.00″August 18, 20266 cities · 1.50″August 17, 20266 cities · 1.00″August 16, 202610 cities · 1.50″August 15, 20268 cities · 1.50″August 14, 202611 cities · 2.00″August 13, 202616 cities · 2.00″August 12, 202610 cities · 1.50″August 11, 202633 cities · 2.00″August 10, 202623 cities · 1.50″August 9, 202649 cities · 1.50″August 8, 20265 cities · 1.50″

Every state with hail on record →

FAQ

US hail on July 17, 2024

NOAA radar put hail of an inch or more over 8 cities across 4 states on July 17, 2024. The largest stones — 1.50 inches, half dollar size — were over Pasadena, TX. Every state hit is listed on this page, and every city under it.

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