How big was the hail on September 29, 2023?

The maximum estimated stone size anywhere in the country that day was 1.00 inches, over Plymouth, 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 · September 29, 2023

Hail map — September 29, 2023

Name: US hail map — September 29, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 3 cities across 2 states on September 29, 2023. The largest stones — 1.00″, quarter size — fell over Plymouth, MN.

Hail swath map for Plymouth, MN on September 29, 2023 showing 1.00 inch hail. — Largest rendered swath of the day: Plymouth, MN — 1.00″ hail. Each city below has its own map for this storm.

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The September 29, 2023 swath — and every other storm since 2023 across your state
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States hit: 2
Cities hit: 3
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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States hit on September 29, 2023

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

Minnesota2 cities · 1.00″Nebraska1 city · 1.00″

Hardest hit on September 29, 2023

Plymouth, MN1.00″ · quarter Maple Grove, MN1.00″ · quarter Norfolk, NE1.00″ · quarter

What people on the ground measured in the US on September 29, 2023

15 reports filed with the National Weather Service — 7 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.

1.75″ golf ball size Broadcast Media
Barnesville, MN8:20 AM CDTClay County
1.50″ half dollar size Emergency Mngr
1 W Groton, SD6:56 AM CDTBrown County
time estimated from radar.
1.50″ half dollar size Trained Spotter
2 NW Currie, MN5:20 PM CDTMurray County
Mostly peas to walnut sized hail reported just south of Lake Shetek.
1.25″ half dollar size Trained Spotter
2 WNW Hadley, MN4:53 PM CDTMurray County
A trained spotter reported half dollar sized hail. Time estimated via radar.
1.00″ quarter size Trained Spotter
1 N Stratford, SD6:49 AM CDTBrown County
1.00″ quarter size Trained Spotter
14 NE White Earth, MN8:55 AM CDTMahnomen County
Quarter sized hail at intersection of highway 35 and 113.
1.00″ quarter size Public
Elkton, SD4:19 PM CDTBrookings County
Multiple social media reports of Nickel to quarter size hail in Elkton, SD. Time estimated via Radar.
1.00″ quarter size Public
Lake Wilson, MN4:51 PM CDTMurray County
Social Media report of nickel to quarter sized hail. Time estimated via radar.
1.00″ quarter size Public
3 SW Arco, MN4:55 PM CDTLincoln County
Public report of Quarter sized hail. Time estimated via radar.
1.00″ quarter size Public
1 SSE Norfolk, NE8:30 PM CDTMadison County
several reports of quarter sized hail in Norfolk.
1.00″ quarter size Emergency Mngr
4 ENE Norfolk, NE8:37 PM CDTStanton County
0.25 to 1 inch hail.
1.00″ quarter size Public
4 E Norfolk, NE8:38 PM CDTStanton County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
6 E Norfolk, NE8:40 PM CDTStanton County
Report from mPING: Quarter (1.00 in.).
0.88″ penny size Public
Willmar, MN8:45 PM CDTKandiyohi County
Picture via Twitter.
0.75″ penny size Trained Spotter
3 N Montrose, MN9:45 PM CDTWright County

Showing the 15 largest of 16 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 September 29, 2023

NOAA radar put hail of an inch or more over 3 cities across 2 states on September 29, 2023. The largest stones — 1.00 inches, quarter size — were over Plymouth, MN. Every state hit is listed on this page, and every city under it.

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