How big was the hail on August 16, 2023?

The maximum estimated stone size anywhere in the country that day was 1.00 inches, over Duluth, MN. 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 · August 16, 2023

Hail map — August 16, 2023

Name: US hail map — August 16, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 2 cities across 2 states on August 16, 2023. The largest stones — 1.00″, quarter size — fell over Duluth, MN.

Hail swath map for Duluth, MN on August 16, 2023 showing 1.00 inch hail. — Largest rendered swath of the day: Duluth, MN — 1.00″ hail. Each city below has its own map for this storm.

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The August 16, 2023 swath — and every other storm since 2023 across your state
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States hit: 2
Cities hit: 2
Largest stone: 1.00″; quarter size
Impact rating: 3/10; 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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Free, and no account needed to look it up. If hail did hit, you'll have the date and the stone size in writing — which is the first thing an adjuster asks for.

States hit on August 16, 2023

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

Minnesota1 city · 1.00″Wisconsin1 city · 1.00″

Hardest hit on August 16, 2023

Duluth, MN1.00″ · quarter Superior, WI1.00″ · quarter

What people on the ground measured in the US on August 16, 2023

15 reports filed with the National Weather Service — 5 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.

2.50″ hen egg size Public
6 NE Hertel, WI8:36 PM CDTBurnett County
Report from mPING: Tennis Ball (2.50 in.) DELETE THIS: Maybe true, waiting on further reports.
1.25″ half dollar size Public
4 NW Spooner, WI8:48 PM CDTWashburn County
photo with hail next to a quarter.
1.00″ quarter size Public
2 W Dixie Union, GA4:47 PM EDTWare County
Home on Telmore Dixie Union Road experienced hail the size of quarters and also a childs playhouse blew across the yard.
1.00″ quarter size Public
1 SSE Yellowlake, WI8:15 PM CDTBurnett County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
2 N Welcome, MN9:00 PM CDTMartin County
Hail near to slightly larger than a quarter.
1.00″ quarter size Public
2 WNW Fairmont, MN9:10 PM CDTMartin County
Delayed report - Quarter size hail at fairgrounds, along with gusty winds that nearly blew away tents. Time estimated from radar.
0.88″ penny size Trained Spotter
3 SSW Wentworth, WI6:30 PM CDTDouglas County
0.88″ penny size Emergency Mngr
Sandstone, MN7:20 PM CDTPine County
Reports of nickel size hail in the Sandstone area. Time approximate.
0.88″ penny size Public
Fairmont, MN9:10 PM CDTMartin County
Reported via Twitter. Photo included.
0.70″ penny size Public
2 N Spooner, WI8:40 PM CDTWashburn County
time estimated by radar and observer.
0.50″ penny size Public
2 ENE Ester, AK4:00 PM AKDTFairbanks North Sta County
Half inch hail observed on Gold Hill Rd. around 4PM.
0.50″ penny size Trained Spotter
6 S Duxbury, MN7:55 PM CDTPine County
0.38″ penny size Public
6 NE Ester, AK3:56 PM AKDTFairbanks North Sta County
Hail lasted for over 10 min. Largest size 3/8 inch.
0.25″ penny size Emergency Mngr
1 ENE Bunnell, FL4:21 PM EDTFlagler County
Pea sized hail reported at the Flagler county EOC.
0.25″ penny size 911 Call Center
Eagle River, WI10:40 PM CDTVilas County
Pea size hail at the call center.

These are verified ground reports, updated 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

October 26, 20264 cities · 1.00″October 25, 20265 cities · 1.75″October 24, 20264 cities · 1.50″October 23, 202611 cities · 2.00″October 22, 202613 cities · 2.00″October 21, 202627 cities · 2.00″October 20, 202611 cities · 2.00″October 19, 20261 city · 2.00″October 14, 20261 city · 1.25″October 13, 202610 cities · 1.75″October 8, 20266 cities · 1.75″September 27, 20262 cities · 1.25″

Every state with hail on record →

FAQ

US hail on August 16, 2023

NOAA radar put hail of an inch or more over 2 cities across 2 states on August 16, 2023. The largest stones — 1.00 inches, quarter size — were over Duluth, MN. Every state hit is listed on this page, and every city under it.

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