How big was the hail on September 16, 2024?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Schenectady, NY. 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 · September 16, 2024

Hail map — September 16, 2024

Name: US hail map — September 16, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 3 cities across 2 states on September 16, 2024. The largest stones — 2.00″, hen egg size — fell over Schenectady, NY.

Hail swath map for Schenectady, NY on September 16, 2024 showing 2.00 inch hail. — Largest rendered swath of the day: Schenectady, NY — 2.00″ hail. Each city below has its own map for this storm.

States hit: 2
Cities hit: 3
Largest stone: 2.00″; hen egg size
Impact rating: 7/10; 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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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 16, 2024

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

New York2 cities · 2.00″North Dakota1 city · 1.00″

Hardest hit on September 16, 2024

Schenectady, NY2.00″ · hen egg Rotterdam, NY2.00″ · hen egg Minot, ND1.00″ · quarter

What people on the ground measured in the US on September 16, 2024

15 reports filed with the National Weather Service — 3 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.

2.50″ hen egg size Public
5 WSW Voltaire, ND6:55 PM CDTMcHenry County
Facebook photo of several hail stones 5 miles south of Velva. Biggest is estimated to be tennis ball size.
2.50″ hen egg size Public
5 WSW Voltaire, ND7:02 PM CDTMcHenry County
Social media picture of tennis ball size hail south of Velva earlier this evening.
2.25″ hen egg size Public
9 S Collyer, KS8:45 PM CDTTrego County
Facebook with pictures of multiple 2-2.25 stones.
1.75″ golf ball size Public
7 W Pick City, ND1:58 AM CDTMercer County
Public reported hail, some estimated to be up to the size of golf balls, for about 30 minutes from a period of around 1:45 to 2:15 AM CDT. Time estimated by radar when the strongest core was over reported location. Relayed via social media.
1.75″ golf ball size Trained Spotter
Bergen, ND7:35 PM CDTMcHenry County
Heavy rain also occurring with the hail.
1.50″ half dollar size Public
12 SSE Quinter, KS8:54 PM CDTGove County
Delayed report via social media. Estimated up to ping pong ball sized hail that occurred on and off over an hour. Hail broke some vehicle windshields with some smaller accumulating hail drifts up against buildings. Time of LSR is when the ping pong ball sized hail most likely occurred via radar estimates.
1.25″ half dollar size Storm Chaser
4 SW Pick City, ND1:30 AM CDTMercer County
1.25″ half dollar size Public
3 E Rose, ID4:42 PM MDTBingham County
Photos of estimated half dollar size hail received from the public and relayed to NWS Pocatello by KIFI. Hail fell near the intersection of E 350 N and Hancock Rd/N 100 E just west of Wapello. Time estimated based on report and radar.
1.00″ quarter size Public
10 SW Krueger Lake, ND1:30 AM CDTMcLean County
Report via social media.
1.00″ quarter size Public
11 NE Hebron, ND3:30 AM CDTMercer County
Hail fell for about 5 minutes beginning around 3:30 AM CDT, with the largest estimated to be around the size of quarters. Relayed via social media.
1.00″ quarter size Public
6 SSE Florian, MN8:48 AM CDTMarshall County
Estimated 50 mph winds along with the hail.
0.88″ penny size Public
Boiling Spring Lakes, NC11:33 AM EDTBrunswick County
0.88″ penny size Trained Spotter
1 E Drake, ND8:45 PM CDTMcHenry County
Reports hail not quite the size of quarters and some wind. Time estimated based on radar. Also reports 2.25 inches of rain.
0.75″ penny size Broadcast Media
Boiling Spring Lakes, NC11:31 AM EDTBrunswick County
0.70″ penny size Trained Spotter
3 S Driggs, ID7:00 PM MDTTeton County
Photo submitted to NWS Pocatello. Time estimated based on radar.

Showing the 15 largest of 17 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 September 16, 2024

NOAA radar put hail of an inch or more over 3 cities across 2 states on September 16, 2024. The largest stones — 2.00 inches, hen egg size — were over Schenectady, NY. Every state hit is listed on this page, and every city under it.

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