Chesterfield, MO

Hail map for Chesterfield, MO — April 27, 2026

NOAA radar detected hail up to 1.50″ — half dollar size — within 5 miles of Chesterfield on April 27, 2026.

Hail swath map for Chesterfield, MO on April 27, 2026 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
Reached the ground
50%
NOAA POSH probability
Measured on the ground
2.00″
13.1 mi away · Public

NOAA's Probability of Severe Hail peaked at 50% over Chesterfield that day — moderate: severe hail likely reached the ground somewhere nearby. It is a separate model from the size estimate above: one asks how big the stones were in the storm, the other asks whether they made it down.

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 Chesterfield 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 April 27, 2026

Topeka, KS2.00″Rowlett, TX2.00″Rockwall, TX2.00″Garland, TX1.50″Richardson, TX1.50″Wildwood, MO1.50″Upper Alton, IL1.50″Alton, IL1.50″Greenville, TX1.50″Edwardsville, IL1.50″University Park, TX1.50″Gardner, KS1.50″
Every Missouri city hit on April 27, 2026 →

Other hail dates for Chesterfield

August 16, 20261.00″April 17, 20261.00″May 16, 20252.00″May 26, 20241.50″April 1, 20242.00″
Every storm over Chesterfield →

What people on the ground measured in Chesterfield, MO on April 27, 2026

21 reports filed with the National Weather Service — 2 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.

  • 2.00″ hen egg size Public
    4 N Pacific, MO · 13.1 mi away6:54 PM CDTFranklin County

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

  • 1.75″ golf ball size Public
    1 E University City, MO · 14.4 mi away6:15 AM CDTSt. Louis County
  • 1.50″ half dollar size Public
    1 SW Bridgeton, MO · 9.5 mi away1:34 PM CDTSt. Louis County

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

  • 1.50″ half dollar size Public
    University City, MO · 13.4 mi away6:16 AM CDTSt. Louis County

    Estimated ping pong sized hail with photo and US quarter. Time estimated from radar.

  • 1.50″ half dollar size Public
    1 N University City, MO · 13.4 mi away6:15 AM CDTSt. Louis County
  • 1.50″ half dollar size Public
    1 SE University City, MO · 14.4 mi away6:15 AM CDTSt. Louis County

    picture received on X.

  • 1.25″ half dollar size Public
    1 E Clarkson Valley, MO · 2.3 mi away1:38 PM CDTSt. Louis County
  • 1.25″ half dollar size Public
    3 NE O'Fallon, MO · 11.3 mi away6:36 PM CDTSt. Charles County

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

  • 1.25″ half dollar size Amateur Radio
    1 NNE O'Fallon, MO · 11.5 mi away6:35 PM CDTSt. Charles County
  • 1.25″ half dollar size Amateur Radio
    2 NNE O'Fallon, MO · 12.1 mi away6:39 PM CDTSt. Charles County
  • 1.00″ quarter size Public
    1 N Chesterfield, MO · 0.5 mi away1:35 PM CDTSt. Louis County
  • 1.00″ quarter size Public
    2 S Harvester, MO · 4.0 mi away12:20 PM CDTSt. Charles County

    Corrects previous hail report from 2 S Harvester. Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 S Harvester, MO · 4.0 mi away12:25 PM CDTSt. Charles County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 WNW Town And Country, MO · 4.3 mi away1:36 PM CDTSt. Louis County
  • 1.00″ quarter size Public
    2 SW Clarkson Valley, MO · 4.9 mi away6:58 PM CDTSt. Louis County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 E O'Fallon, MO · 10.1 mi away6:30 PM CDTSt. Charles County

    Near Mexico Road and Salt Lick.

  • 1.00″ quarter size Public
    4 NW Saint Peters, MO · 12.0 mi away6:37 PM CDTSt. Charles County
  • 1.00″ quarter size Public
    1 NW University City, MO · 12.3 mi away6:16 AM CDTSt. Louis County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size NWS Employee
    2 WNW O'Fallon, MO · 12.4 mi away6:35 PM CDTSt. Charles County
  • 1.00″ quarter size Trained Spotter
    1 S Saint John, MO · 12.5 mi away1:48 PM CDTSt. Louis County

    At Midland and I-170.

  • 0.88″ penny size Public
    1 E Saint Peters, MO · 8.1 mi away12:17 PM CDTSt. Charles 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.

FAQ

Chesterfield hail on April 27, 2026

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

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