Does this mean roofs in the area 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. This tells you where it is worth looking.

How accurate is this hail map?

Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25 inches against ground truth and resolves to roughly 1 km cells. That makes it canvass-targeting quality — good enough to pick the neighbourhoods worth knocking, not a substitute for claim evidence.

How do I see this swath on a real map of O'Fallon?

A HailMate plan puts the whole state around O'Fallon on an interactive map with this swath and three years of others already on it. $79/mo, and the canvassing tools come with it.

O'Fallon, MO

Hail map for O'Fallon, MO — March 14, 2024

Name: Hail map for O'Fallon, MO — March 14, 2024
Creator: HailMate

NOAA radar detected hail up to 1.50″ — half dollar size — within 5 miles of O'Fallon on March 14, 2024.

Hail swath map for O'Fallon, MO on March 14, 2024 showing 1.50 inch hail.

Max hail size: 1.50″; half dollar
Impact rating: 5/10; from stone size
Size bands over the city: 2; distinct radar bands
Measured on the ground: 3.00″; 0.6 mi away · Public

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

Did hail hit your address?

This page covers O'Fallon 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 can ask for a free inspection from a vetted local roofer.

Other towns hit on March 14, 2024

Frisco, TX2.00″Flower Mound, TX2.00″Muncie, IN2.00″Celina, TX2.00″The Trails of Frisco, TX2.00″Keller, TX2.00″The Colony, TX2.00″Little Elm, TX2.00″Granite City, IL2.00″Edwardsville, IL2.00″Corinth, TX2.00″Lewisville, TX1.50″

Every Missouri city hit on March 14, 2024 →

Other hail dates for O'Fallon

August 12, 20251.00″May 16, 20251.00″May 26, 20241.00″July 29, 20231.00″

Every storm over O'Fallon →

What people on the ground measured in O'Fallon, MO on March 14, 2024

61 reports filed with the National Weather Service — 21 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.

3.00″ baseball size Public
1 N O'Fallon, MO · 0.6 mi away4:32 PM CDTSt. Charles County
Report from mPING: Tea Cup (3.00 in.).
3.00″ baseball size Public
2 N O'Fallon, MO · 0.6 mi away4:19 PM CDTSt. Charles County
Several photos of 2-3 inch hail measured with a ruler.
3.00″ baseball size Public
1 N O'Fallon, MO · 0.9 mi away4:32 PM CDTSt. Charles County
3.00″ baseball size NWS Employee
2 SSE Saint Paul, MO · 1.3 mi away4:20 PM CDTSt. Charles County
3.00″ baseball size Public
2 E O'Fallon, MO · 2.1 mi away4:35 PM CDTSt. Charles County
Report from mPING: Tea Cup (3.00 in.).
3.00″ baseball size Trained Spotter
Lake Saint Louis, MO · 4.6 mi away4:19 PM CDTSt. Charles County
Delayed report. Hail was approximately the size of a palm or two golf balls put together. Estimated 3-4 inches.
2.75″ baseball size NWS Employee
2 SSE Saint Paul, MO · 1.3 mi away4:23 PM CDTSt. Charles County
delayed report.
2.75″ baseball size Trained Spotter
1 SSE Saint Paul, MO · 2.6 mi away4:12 PM CDTSt. Charles County
Delayed report, time estimated from radar.
2.75″ baseball size Public
2 NE Lake Saint Louis, MO · 3.3 mi away4:18 PM CDTSt. Charles County
Report from mPING: Baseball (2.75 in.).
2.75″ baseball size Trained Spotter
1 N Lake Saint Louis, MO · 4.3 mi away4:12 PM CDTSt. Charles County
Delayed report.
2.75″ baseball size Trained Spotter
Lake Saint Louis, MO · 4.6 mi away4:26 PM CDTSt. Charles County
Delayed report.
2.50″ hen egg size Public
2 NE Lake Saint Louis, MO · 3.3 mi away4:49 PM CDTSt. Charles County
Report from mPING: Tennis Ball (2.50 in.).
2.50″ hen egg size Public
2 ENE Lake Saint Louis, MO · 3.3 mi away4:19 PM CDTSt. Charles County
2.25″ hen egg size Public
2 SW Saint Paul, MO · 2.8 mi away4:20 PM CDTSt. Charles County
Report from mPING: Hen Egg+ (2.25 in.).
2.00″ hen egg size Trained Spotter
2 NNE O'Fallon, MO · 0.0 mi away4:19 PM CDTSt. Charles County
Report via social media. Time estimated by radar.
2.00″ hen egg size Public
2 NW O'Fallon, MO · 1.8 mi away4:18 PM CDTSt. Charles County
Report from mPING: Hen Egg (2.00 in.).
2.00″ hen egg size Public
2 E O'Fallon, MO · 2.1 mi away4:22 PM CDTSt. Charles County
2.00″ hen egg size Trained Spotter
O'Fallon, MO · 2.2 mi away4:15 PM CDTSt. Charles County
Delayed report, time estimated from radar.
2.00″ hen egg size Public
1 SE Saint Paul, MO · 2.3 mi away4:57 PM CDTSt. Charles County
Report from mPING: Hen Egg (2.00 in.).
2.00″ hen egg size Trained Spotter
1 SSE Saint Paul, MO · 2.6 mi away6:15 PM CDTSt. Charles County
2.00″ hen egg size Public
4 NW Saint Peters, MO · 3.5 mi away4:32 PM CDTSt. Charles County
2.00″ hen egg size Trained Spotter
Lake Saint Louis, MO · 4.6 mi away4:28 PM CDTSt. Charles County
Delayed report, 2 to 2.5 inch hail.
2.00″ hen egg size Public
3 W Saint Paul, MO · 5.6 mi away6:13 PM CDTSt. Charles County
Report from mPING: Hen Egg (2.00 in.).
2.00″ hen egg size Public
2 W Lake Saint Louis, MO · 6.0 mi away4:16 PM CDTSt. Charles County
Report from mPING: Hen Egg (2.00 in.).
2.00″ hen egg size Public
2 E Wentzville, MO · 7.1 mi away4:13 PM CDTSt. Charles County
2.00″ hen egg size Trained Spotter
Wentzville, MO · 8.6 mi away4:05 PM CDTSt. Charles County
Delayed report, time estimated from radar. Measured 2.25 inch hail.
2.00″ hen egg size Public
2 SW Flint Hill, MO · 10.5 mi away4:05 PM CDTSt. Charles County
Estimated size from a photo. Time estimated by radar.
1.75″ golf ball size Public
1 N O'Fallon, MO · 0.6 mi away4:19 PM CDTSt. Charles County
Report from mPING: Golf Ball (1.75 in.).
1.75″ golf ball size Trained Spotter
1 N O'Fallon, MO · 0.9 mi away4:16 PM CDTSt. Charles County
Delayed report.
1.75″ golf ball size Public
3 NE O'Fallon, MO · 1.7 mi away4:17 PM CDTSt. Charles County
Report from mPING: Golf Ball (1.75 in.).
1.75″ golf ball size Public
3 NE O'Fallon, MO · 1.7 mi away4:19 PM CDTSt. Charles County
Report from mPING: Golf Ball (1.75 in.).
1.75″ golf ball size Public
1 E O'Fallon, MO · 1.8 mi away4:18 PM CDTSt. Charles County
Report from mPING: Golf Ball (1.75 in.).
1.75″ golf ball size Broadcast Media
2 ESE Saint Paul, MO · 2.0 mi away4:24 PM CDTSt. Charles County
Video sent via social media.
1.75″ golf ball size NWS Employee
2 E O'Fallon, MO · 2.1 mi away4:19 PM CDTSt. Charles County
Delayed report, time estimated from radar.
1.75″ golf ball size Trained Spotter
2 NNW Cottleville, MO · 2.7 mi away4:20 PM CDTSt. Charles County
Delayed report.
1.75″ golf ball size Public
2 SW Saint Paul, MO · 2.8 mi away4:19 PM CDTSt. Charles County
Report from mPING: Golf Ball (1.75 in.).
1.75″ golf ball size Trained Spotter
1 SW Saint Paul, MO · 3.0 mi away4:16 PM CDTSt. Charles County
Golf ball sized hail at St. Paul Road and HWY P in St. Paul.
1.75″ golf ball size Public
2 E Flint Hill, MO · 7.3 mi away4:12 PM CDTSt. Charles County
1.75″ golf ball size Trained Spotter
Wentzville, MO · 8.6 mi away4:06 PM CDTSt. Charles County
Delayed report.
1.75″ golf ball size Public
1 N Wentzville, MO · 8.7 mi away4:06 PM CDTSt. Charles County
Report from mPING: Golf Ball (1.75 in.).
1.75″ golf ball size Trained Spotter
3 ESE Kampville, MO · 11.4 mi away4:28 PM CDTSt. Charles County
Delayed report, golfball sized hail in New Town St. Charles.
1.50″ half dollar size Public
2 WNW O'Fallon, MO · 2.3 mi away4:20 PM CDTSt. Charles County
1.50″ half dollar size Trained Spotter
Flint Hill, MO · 9.1 mi away4:08 PM CDTSt. Charles County
Delayed report.
1.25″ half dollar size Public
1 N O'Fallon, MO · 0.6 mi away4:18 PM CDTSt. Charles County
Report from mPING: Half Dollar (1.25 in.).
1.25″ half dollar size Public
2 SW Saint Paul, MO · 2.8 mi away4:16 PM CDTSt. Charles County
Report from mPING: Half Dollar (1.25 in.).
1.25″ half dollar size Public
1 E Wentzville, MO · 8.1 mi away4:05 PM CDTSt. Charles County
Report via social media.
1.25″ half dollar size Public
1 W Wentzville, MO · 9.7 mi away4:08 PM CDTSt. Charles County
Report from mPING: Half Dollar (1.25 in.).
1.00″ quarter size Public
2 SW Saint Paul, MO · 2.8 mi away4:11 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
2 NE Lake Saint Louis, MO · 3.3 mi away4:13 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
4 NNW Saint Peters, MO · 3.5 mi away4:20 PM CDTSt. Charles County
Delayed report, time estimated from radar.
1.00″ quarter size Public
4 NW Saint Peters, MO · 3.5 mi away4:21 PM CDTSt. Charles County
1.00″ quarter size Public
2 S Lake Saint Louis, MO · 5.6 mi away4:13 PM CDTSt. Charles County
Delayed report.
1.00″ quarter size Public
3 W Saint Paul, MO · 6.0 mi away6:13 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
3 NNE Saint Peters, MO · 6.5 mi away4:29 PM CDTSt. Charles County
Report via social media.
1.00″ quarter size Public
1 SE Flint Hill, MO · 8.4 mi away6:06 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
1 NW Saint Charles, MO · 9.2 mi away4:22 PM CDTSt. Charles County
hail near st charles west high school, around the size of a quarter.
1.00″ quarter size Public
1 NW Wentzville, MO · 9.8 mi away4:04 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
2 SW Flint Hill, MO · 9.9 mi away4:04 PM CDTSt. Charles County
Delayed report, mping report 1 mile nw of Wentzville.
1.00″ quarter size Public
2 SW Flint Hill, MO · 10.9 mi away4:06 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
3 SW Wentzville, MO · 10.9 mi away4:08 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
2 E Saint Charles, MO · 11.9 mi away4:28 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).

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.

FAQ

O'Fallon hail on March 14, 2024

NOAA radar estimated stones up to 1.50 inches — half dollar size — within about 5 miles of O'Fallon that day, across 2 distinct size bands. Sizes vary street to street inside a single swath.

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