Illinois · March 31, 2024

Illinois hail map — March 31, 2024

NOAA radar detected hail of an inch or more over 1 Illinois city on March 31, 2024. The largest stones — 1.00″, quarter size — fell over Decatur.

Hail swath map for Decatur, IL on March 31, 2024 showing 1.00 inch hail.
Swath over Decatur on March 31, 2024 — 1.00″ hail. Each city below has its own map for this storm.
Cities hit
1
in Illinois
Largest stone
1.00″
quarter size
Impact rating
3/10
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.

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Illinois cities hit on March 31, 2024

Decatur, IL1.00″ · quarter

What people on the ground measured in Illinois on March 31, 2024

12 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.

  • 2.50″ hen egg size Broadcast Media
    2 NE Decatur, IL7:52 PM CDTMacon County

    Photo from public of tennis ball size hail.

  • 2.00″ hen egg size CO-OP Observer
    Mount Pulaski, IL7:21 PM CDTLogan County
  • 2.00″ hen egg size Public
    2 SSW Forsyth, IL7:50 PM CDTMacon County

    Picture via social media; Wolf Road.

  • 1.75″ golf ball size Mesonet
    Mason City, IL6:39 PM CDTMason County

    Golf ball size hail 3 miles SW of Mason City.

  • 1.75″ golf ball size Emergency Mngr
    Middletown, IL6:56 PM CDTLogan County

    Golf ball size hail in Middletown.

  • 1.75″ golf ball size Emergency Mngr
    Latham, IL7:22 PM CDTLogan County
  • 1.75″ golf ball size Emergency Mngr
    Latham, IL7:30 PM CDTLogan County
  • 1.75″ golf ball size Public
    2 W Warrensburg, IL7:40 PM CDTMacon County

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

  • 1.75″ golf ball size Public
    Forsyth, IL7:46 PM CDTMacon County

    Picture via social media.

  • 1.75″ golf ball size Public
    Forsyth, IL7:55 PM CDTMacon County

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

  • 1.75″ golf ball size Emergency Mngr
    Oreana, IL7:57 PM CDTMacon County
  • 1.75″ golf ball size Public
    1 NW Mount Zion, IL7:58 PM CDTMacon County

    Picture via social media.

Showing the 12 largest of 62 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.

Hail elsewhere on March 31, 2024

The full US hail map for March 31, 2024 →

Other Illinois hail days

August 13, 20263 cities · 1.00″August 11, 20263 cities · 1.00″August 9, 202640 cities · 1.50″July 27, 2026127 cities · 2.00″July 10, 20262 cities · 1.00″July 4, 20261 city · 1.50″July 3, 202618 cities · 1.00″July 2, 202614 cities · 1.00″June 24, 202614 cities · 1.50″June 17, 20264 cities · 2.00″June 11, 20261 city · 1.00″June 10, 202614 cities · 1.00″
Every hail day across Illinois →
FAQ

Illinois hail on March 31, 2024

NOAA radar put hail of an inch or more over 1 Illinois city that day. The largest stones — 1.00 inches, quarter size — were over Decatur. Every city hit is listed above with its own stone size.

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