How big was the hail on February 4, 2024?

The maximum estimated stone size anywhere in the country that day was 1.50 inches, over Troy, MI. 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 · February 4, 2024

Hail map — February 4, 2024

Name: US hail map — February 4, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 7 cities across 3 states on February 4, 2024. The largest stones — 1.50″, half dollar size — fell over Troy, MI.

Hail swath map for Troy, MI on February 4, 2024 showing 1.50 inch hail. — Largest rendered swath of the day: Troy, MI — 1.50″ hail. Each city below has its own map for this storm.

States hit: 3
Cities hit: 7
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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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 February 4, 2024

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

Michigan4 cities · 1.50″Florida2 cities · 1.00″Louisiana1 city · 1.00″

Hardest hit on February 4, 2024

Troy, MI1.50″ · half dollar Rochester Hills, MI1.50″ · half dollar Pontiac, MI1.50″ · half dollar Auburn Hills, MI1.50″ · half dollar Alafaya, FL1.00″ · quarter Winter Park, FL1.00″ · quarter Hammond, LA1.00″ · quarter

What people on the ground measured in the US on February 4, 2024

15 reports filed with the National Weather Service — 4 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 Broadcast Media
Tickfaw, LA6:02 PM CSTTangipahoa County
Broadcast media photo of ping-pong ball to golf ball sized hail in Tickfaw. Time estimated from radar.
1.75″ golf ball size Broadcast Media
2 WNW Hammond, LA6:07 PM CSTTangipahoa County
Viewer photo relayed via broadcast media of large hail in the north side of Hammond, estimated to be around 1.75 inches in diameter. Time estimated from radar.
1.50″ half dollar size Emergency Mngr
2 SSW Flagler Beach, FL7:06 PM ESTFlagler County
Ping Pong sized hail reported at Bulow Plantation, west of Flagler Beach.
1.50″ half dollar size Public
2 S Ocoee, FL7:21 PM ESTOrange County
[delayed report] Public reports hail to ping ball size in Gotha on social media.
1.25″ half dollar size Broadcast Media
Homosassa, FL5:20 PM ESTCitrus County
Corrects previous hail report from Homosassa. Pictures shows hail was around 1.25 inch.
1.25″ half dollar size Public
2 SW Ratliff, FL6:12 PM ESTNassau County
Public report of Half dollar sized hail near Ratliff FL, in Nassau County.
1.00″ quarter size Public
1 NW University of Flor, FL2:56 PM ESTAlachua County
Photo from Social Media showing estimated quarter sized hail littering the green at UF golf course in Gainesville, FL. Time estimated off Radar.
1.00″ quarter size Cocorahs
4 S Glen Saint Mary, FL3:10 PM ESTBaker County
1 inch hail reported with passing storm.
1.00″ quarter size Public
4 SW Moody Afb, GA3:13 PM ESTLowndes County
Quarter size hail reported off Bemiss Road.
1.00″ quarter size Public
3 SSE Starke, FL3:44 PM ESTBradford County
Public reported hail about quarter size hail with some hailstones slightly bigger. Radar estimated time.
1.00″ quarter size Trained Spotter
4 NW Kingsley, FL4:10 PM ESTClay County
Quarter size hail was reported along CR-225 between Lawtey and Kingsley Lake.
1.00″ quarter size Public
2 WNW Independence, LA5:44 PM CSTTangipahoa County
Picture of hail estimated to quarter-sized from social media near Independence. Time and location estimated from radar.
1.00″ quarter size Emergency Mngr
1 SE Palm Coast, FL6:50 PM ESTFlagler County
Quarter sized hail reported to the north of Palm Coast Parkway NE in Palm Coast, FL.
1.00″ quarter size Trained Spotter
1 ESE Tavares, FL7:00 PM ESTLake County
Quarter sized, 1 inch diameter, hail reported at the Seaplane Base in Tavares.
1.00″ quarter size Public
1 ENE Hammond, LA6:13 PM CSTTangipahoa County
Picture via social media of nickel to quarter sized hail in Hammond.

Showing the 15 largest of 54 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 February 4, 2024

NOAA radar put hail of an inch or more over 7 cities across 3 states on February 4, 2024. The largest stones — 1.50 inches, half dollar size — were over Troy, MI. Every state hit is listed on this page, and every city under it.

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