How big was the hail on August 30, 2023?

The maximum estimated stone size anywhere in the country that day was 1.00 inches, over Dickinson, ND. 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 · August 30, 2023

Hail map — August 30, 2023

Name: US hail map — August 30, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 1 city across 1 state on August 30, 2023. The largest stones — 1.00″, quarter size — fell over Dickinson, ND.

Hail swath map for Dickinson, ND on August 30, 2023 showing 1.00 inch hail. — Largest rendered swath of the day: Dickinson, ND — 1.00″ hail. Each city below has its own map for this storm.

States hit: 1
Cities hit: 1
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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Three years of hail swaths, filterable by stone size
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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 August 30, 2023

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

North Dakota1 city · 1.00″

Hardest hit on August 30, 2023

Dickinson, ND1.00″ · quarter

What people on the ground measured in the US on August 30, 2023

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.

1.75″ golf ball size Trained Spotter
Arnegard, ND7:55 PM CDTMcKenzie County
Heavy Rain and Wind gusts to 40 mph.
1.75″ golf ball size Public
Dickinson, ND9:33 PM CDTStark County
Multiple social media photos of hail in Dickinson. Largest measured at golf ball size. Time estimated based on radar.
1.25″ half dollar size Trained Spotter
Arnegard, ND7:46 PM CDTMcKenzie County
Heavy rain along with wind gusts to 40 mph.
1.25″ half dollar size Public
4 W Hirschville, ND9:51 PM CDTDunn County
Social Media photo of hail larger than a quarter. Time estimated based on radar.
1.00″ quarter size Public
6 ENE Tucson, AZ5:00 PM MSTPima County
Quarter size hail has been coming down for about 10-15 minutes. Estimated 40 mph gusts were also reported.
1.00″ quarter size Public
Arnegard, ND7:51 PM CDTMcKenzie County
Social media photo of hail in Arnegard. Time estimated based on radar.
1.00″ quarter size Public
Arnegard, ND8:00 PM CDTMcKenzie County
Corrects previous hail report for time from Arnegard. Social media photo of hail in Arnegard. Time estimated based on radar.
1.00″ quarter size Public
1 N Arnegard, ND8:10 PM CDTMcKenzie County
Social media report and photo of hail covering the ground. Largest is the size of a quarter. Hail lasted off and on for 30 minutes prior.
1.00″ quarter size Trained Spotter
2 NNE Dickinson, ND9:47 PM CDTStark County
Heavy rain.
0.88″ penny size Trained Spotter
5 NW Forsyth, MT6:10 PM MDTRosebud County
0.88″ penny size Trained Spotter
2 NNE Dickinson, ND9:46 PM CDTStark County
0.88″ penny size Public
Cartwright, ND10:24 PM CDTMcKenzie County
Social media report of Nickel sized hail.

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 August 30, 2023

NOAA radar put hail of an inch or more over 1 city across 1 state on August 30, 2023. The largest stones — 1.00 inches, quarter size — were over Dickinson, ND. Every state hit is listed on this page, and every city under it.

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