O'Fallon, MO

Hail map for O'Fallon, MO — May 16, 2025

NOAA radar detected hail up to 2.00″ — hen egg size — within 5 miles of O'Fallon on May 16, 2025.

Hail swath map for O'Fallon, MO on May 16, 2025 showing 2.00 inch hail.
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Max hail size
2.00″
hen egg
Impact rating
7/10
from stone size
Size bands over the city
3
distinct radar bands
Measured on the ground
2.50″
6.5 mi away · Public

Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

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Other towns hit on May 16, 2025

Saint Charles, MO2.00″Mansfield, TX2.00″Saint Peters, MO2.00″Florissant, MO2.00″Chesterfield, MO2.00″Burleson, TX2.00″Wildwood, MO2.00″University City, MO2.00″Waxahachie, TX2.00″Ballwin, MO2.00″Kirkwood, MO2.00″Maryland Heights, MO2.00″
Every Missouri city hit on May 16, 2025 →

Other hail dates for O'Fallon

September 17, 20261.00″August 18, 20251.00″August 12, 20251.00″July 8, 20251.00″May 26, 20242.00″April 1, 20241.50″March 14, 20241.50″September 26, 20231.50″July 29, 20231.00″
Every storm over O'Fallon →

What people on the ground measured in O'Fallon, MO on May 16, 2025

48 reports filed with the National Weather Service — 9 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.

  • 2.50″ hen egg size Public
    2 W Harvester, MO · 6.5 mi away2:25 PM CDTSt. Charles County

    Report from mPING: Tennis Ball (2.50 in.).

  • 2.00″ hen egg size Public
    Cottleville, MO · 5.0 mi away2:25 PM CDTSt. Charles County

    Photo submitted via social media.

  • 2.00″ hen egg size NWS Employee
    1 N Weldon Spring, MO · 6.2 mi away2:24 PM CDTSt. Charles County
  • 2.00″ hen egg size Public
    2 W Harvester, MO · 6.5 mi away2:30 PM CDTSt. Charles County

    Report from mPING: Hen Egg (2.00 in.).

  • 2.00″ hen egg size Public
    1 NW Harvester, MO · 6.9 mi away2:26 PM CDTSt. Charles County

    Report from mPING: Hen Egg (2.00 in.).

  • 2.00″ hen egg size Trained Spotter
    2 WSW Weldon Spring, MO · 7.0 mi away2:18 PM CDTSt. Charles County
  • 2.00″ hen egg size Public
    Harvester, MO · 7.7 mi away2:25 PM CDTSt. Charles County
  • 2.00″ hen egg size NWS Employee
    2 WSW Weldon Spring, MO · 7.7 mi away2:18 PM CDTSt. Charles County

    Hail persisted for 10+ minutes.

  • 2.00″ hen egg size Public
    1 S Harvester, MO · 8.1 mi away2:20 PM CDTSt. Charles County
  • 2.00″ hen egg size Local Official
    1 ENE Chesterfield, MO · 12.8 mi away2:24 PM CDTSt. Louis County

    City of Chesterfield official submitted a photo of 2 inch hail.

  • 2.00″ hen egg size Trained Spotter
    Defiance, MO · 13.2 mi away2:13 PM CDTSt. Charles County
  • 2.00″ hen egg size Public
    2 E Chesterfield, MO · 13.5 mi away2:26 PM CDTSt. Louis County
  • 1.75″ golf ball size Trained Spotter
    1 WNW Harvester, MO · 6.4 mi away2:24 PM CDTSt. Charles County
  • 1.75″ golf ball size Public
    2 W Harvester, MO · 6.5 mi away2:27 PM CDTSt. Charles County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.75″ golf ball size Public
    2 WSW Harvester, MO · 6.9 mi away2:25 PM CDTSt. Charles County

    picture received on X. time estimated from radar.

  • 1.75″ golf ball size Public
    3 SSE Dardenne Prairie, MO · 7.0 mi away2:15 PM CDTSt. Charles County

    Golf ball sized hail 3ENE of our office specifically.

  • 1.75″ golf ball size Public
    4 S Weldon Spring, MO · 10.7 mi away2:23 PM CDTSt. Louis County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.75″ golf ball size Trained Spotter
    4 SE Weldon Spring, MO · 10.7 mi away2:24 PM CDTSt. Louis County

    Corrects previous hail report from 4 S Weldon Spring.

  • 1.75″ golf ball size Public
    1 NW Chesterfield, MO · 12.0 mi away2:24 PM CDTSt. Louis County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.75″ golf ball size Public
    3 NW Wildwood, MO · 13.2 mi away2:20 PM CDTSt. Louis County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.75″ golf ball size Public
    3 NW Wildwood, MO · 13.2 mi away2:19 PM CDTSt. Louis County

    Corrects previous hail report from 3 NW Wildwood. Report from mPING: Golf Ball (1.75 in.).

  • 1.75″ golf ball size Public
    2 E Chesterfield, MO · 13.5 mi away2:27 PM CDTSt. Louis County

    Report from mPING: Golf Ball (1.75 in.).

  • 1.50″ half dollar size Broadcast Media
    2 SW Saint Peters, MO · 5.5 mi away2:24 PM CDTSt. Charles County

    Photo submitted courtesy of Spectrum News.

  • 1.50″ half dollar size Public
    Saint Peters, MO · 5.8 mi away2:27 PM CDTSt. Charles County
  • 1.50″ half dollar size Public
    Weldon Spring, MO · 6.8 mi away2:20 PM CDTSt. Charles County

    time estimated.

  • 1.50″ half dollar size Public
    1 NE Chesterfield, MO · 12.3 mi away2:33 PM CDTSt. Louis County

    Report from mPING: Ping Pong Ball (1.50 in.).

  • 1.50″ half dollar size Public
    3 NW Wildwood, MO · 13.2 mi away2:18 PM CDTSt. Louis County

    Report from mPING: Ping Pong Ball (1.50 in.).

  • 1.25″ half dollar size Public
    1 S O'Fallon, MO · 2.9 mi away2:12 PM CDTSt. Charles County

    Report from mPING: Half Dollar (1.25 in.).

  • 1.25″ half dollar size Trained Spotter
    2 SW Cottleville, MO · 5.7 mi away2:23 PM CDTSt. Charles County
  • 1.25″ half dollar size Public
    1 NE Weldon Spring, MO · 6.7 mi away2:24 PM CDTSt. Charles County

    60 mph estimated winds as well.

  • 1.25″ half dollar size Public
    2 NE Saint Peters, MO · 7.0 mi away2:25 PM CDTSt. Charles County

    Report from mPING: Half Dollar (1.25 in.).

  • 1.25″ half dollar size Public
    2 SW Harvester, MO · 7.7 mi away2:25 PM CDTSt. Charles County

    Report from mPING: Half Dollar (1.25 in.).

  • 1.25″ half dollar size Public
    3 NW Clarkson Valley, MO · 11.4 mi away2:26 PM CDTSt. Louis County

    Report from mPING: Half Dollar (1.25 in.).

  • 1.25″ half dollar size Public
    2 E Chesterfield, MO · 13.2 mi away2:34 PM CDTSt. Louis County

    Report from mPING: Half Dollar (1.25 in.).

  • 1.00″ quarter size Public
    1 NE O'Fallon, MO · 1.4 mi away2:07 PM CDTSt. Charles County

    time estimated.

  • 1.00″ quarter size Public
    1 NE Dardenne Prairie, MO · 3.0 mi away2:18 PM CDTSt. Charles County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    1 NW Cottleville, MO · 4.1 mi away2:21 PM CDTSt. Charles County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 SE Dardenne Prairie, MO · 4.9 mi away2:18 PM CDTSt. Charles County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    Saint Peters, MO · 5.8 mi away2:20 PM CDTSt. Charles County

    time estimated.

  • 1.00″ quarter size Public
    1 SE Cottleville, MO · 5.8 mi away2:21 PM CDTSt. Charles County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    New Melle, MO · 12.0 mi away2:00 PM CDTSt. Charles County

    time estimated.

  • 1.00″ quarter size Public
    2 SE New Melle, MO · 12.5 mi away2:00 PM CDTSt. Charles County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    4 NE Chesterfield, MO · 12.9 mi away2:30 PM CDTSt. Louis County

    time estimated.

  • 1.00″ quarter size Public
    3 NW Wildwood, MO · 13.2 mi away2:21 PM CDTSt. Louis County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    3 NW Wildwood, MO · 13.2 mi away2:22 PM CDTSt. Louis County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    3 NW Wildwood, MO · 13.2 mi away2:18 PM CDTSt. Louis County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Trained Spotter
    2 E Chesterfield, MO · 13.2 mi away2:29 PM CDTSt. Louis County
  • 1.00″ quarter size Public
    3 E Chesterfield, MO · 14.4 mi away2:29 PM CDTSt. Louis County

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.

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FAQ

O'Fallon hail on May 16, 2025

NOAA radar estimated stones up to 2.00 inches — hen egg size — within about 5 miles of O'Fallon that day, across 3 distinct size bands. Sizes vary street to street inside a single swath.

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