O'Fallon, IL

Hail map for O'Fallon, IL — March 14, 2025

NOAA radar detected hail up to 1.50″ — half dollar size — within 5 miles of O'Fallon on March 14, 2025.

Hail swath map for O'Fallon, IL on March 14, 2025 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
1.75″
0.2 mi away · Broadcast Media

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 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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Other towns hit on March 14, 2025

Belleville, IL1.50″Oakville, MO1.50″Mehlville, MO1.50″Kirkwood, MO1.50″Webster Groves, MO1.50″Arnold, MO1.50″Affton, MO1.50″St. Louis, MO1.00″University City, MO1.00″East Saint Louis, IL1.00″Cabot, AR1.00″Collinsville, IL1.00″
Every Illinois city hit on March 14, 2025 →

Other hail dates for O'Fallon

July 10, 20261.00″May 26, 20241.00″July 29, 20231.00″July 14, 20231.00″
Every storm over O'Fallon →

What people on the ground measured in O'Fallon, IL on March 14, 2025

20 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.

  • 1.75″ golf ball size Broadcast Media
    O'Fallon, IL · 0.2 mi away10:25 PM CDTSt. Clair County

    Wind driven hail resulted in extensive damage to west facing homes and buildings.

  • 1.75″ golf ball size Public
    Maryville, IL · 9.9 mi away9:58 PM CDTMadison County

    Photo submitted via social media. Time estimated by radar.

  • 1.50″ half dollar size Trained Spotter
    Collinsville, IL · 7.7 mi away10:03 PM CDTMadison County
  • 1.50″ half dollar size Public
    Marine, IL · 14.8 mi away10:10 PM CDTMadison County
  • 1.00″ quarter size Public
    O'Fallon, IL · 0.2 mi away10:06 PM CDTSt. Clair County
  • 1.00″ quarter size Trained Spotter
    O'Fallon, IL · 0.2 mi away10:30 PM CDTSt. Clair County
  • 1.00″ quarter size Public
    O'Fallon, IL · 0.5 mi away10:25 PM CDTSt. Clair County
  • 1.00″ quarter size Public
    1 N Shiloh, IL · 1.5 mi away10:27 PM CDTSt. Clair County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 N O'Fallon, IL · 2.0 mi away10:28 PM CDTSt. Clair County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    1 NE Shiloh, IL · 2.5 mi away10:28 PM CDTSt. Clair County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    Shiloh, IL · 3.0 mi away10:45 PM CDTSt. Clair County
  • 1.00″ quarter size Public
    1 ESE Troy, IL · 9.1 mi away10:05 PM CDTMadison County
  • 1.00″ quarter size Public
    Troy, IL · 9.6 mi away10:08 PM CDTMadison County
  • 1.00″ quarter size Emergency Mngr
    1 ESE Troy, IL · 9.6 mi away10:33 PM CDTMadison County

    From Madison County IL EM.

  • 1.00″ quarter size Public
    1 E Troy, IL · 9.6 mi away10:07 PM CDTMadison County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    1 SE Glen Carbon, IL · 11.1 mi away10:06 PM CDTMadison County
  • 1.00″ quarter size Amateur Radio
    Saint Jacob, IL · 11.7 mi away10:39 PM CDTMadison County

    Dime to quarter size hail.

  • 1.00″ quarter size Public
    2 E Glen Carbon, IL · 12.4 mi away10:05 PM CDTMadison County
  • 1.00″ quarter size Public
    1 ENE Glen Carbon, IL · 12.5 mi away10:00 PM CDTMadison County
  • 1.00″ quarter size Public
    3 NW Millstadt, IL · 13.0 mi away10:27 PM CDTSt. Clair 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, 2025

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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