Iowa · August 11, 2023

Iowa hail map — August 11, 2023

NOAA radar detected hail of an inch or more over 1 Iowa city on August 11, 2023. The largest stones — 1.00″, quarter size — fell over Ames.

Hail swath map for Ames, IA on August 11, 2023 showing 1.00 inch hail.
Swath over Ames on August 11, 2023 — 1.00″ hail. Each city below has its own map for this storm.
Cities hit
1
in Iowa
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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Iowa cities hit on August 11, 2023

Ames, IA1.00″ · quarter

What people on the ground measured in Iowa on August 11, 2023

12 reports filed with the National Weather Service — 6 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 Trained Spotter
    2 WNW Meservey, IA9:14 PM CDTHancock County
  • 2.00″ hen egg size Public
    Klemme, IA9:02 PM CDTHancock County

    2 inch hail in Klemme. Delayed report relayed via social media. Time estimated from radar.

  • 2.00″ hen egg size Law Enforcement
    1 SW Lu Verne, IA9:28 PM CDTHumboldt County

    Corrects previous hail report from 1 SW Lu Verne. Hail shattered the windshield of the car. Time estimated.

  • 2.00″ hen egg size Law Enforcement
    1 SW Lu Verne, IA9:31 PM CDTHumboldt County

    Hail shattered the windshield of the car. Time estimated.

  • 1.75″ golf ball size Trained Spotter
    1 SE Klemme, IA9:10 PM CDTHancock County
  • 1.50″ half dollar size Trained Spotter
    4 S Sheffield, IA9:40 PM CDTFranklin County

    Delayed report. Ping pong ball to quarter sized hail.

  • 1.25″ half dollar size Public
    Mallard, IA8:58 PM CDTPalo Alto County

    Delayed report. Relayed via social media. Time estimated from radar.

  • 1.00″ quarter size Trained Spotter
    4 W Britt, IA8:13 PM CDTHancock County

    Delayed report. Time estimated from radar.

  • 1.00″ quarter size Law Enforcement
    Mallard, IA8:58 PM CDTPalo Alto County
  • 1.00″ quarter size Trained Spotter
    Thornton, IA9:21 PM CDTCerro Gordo County
  • 1.00″ quarter size Law Enforcement
    Belmond, IA9:50 PM CDTWright County
  • 1.00″ quarter size Trained Spotter
    4 N Hansell, IA9:55 PM CDTFranklin County

    Delayed report. Time estimated from radar.

Showing the 12 largest of 20 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.

Other states hit on August 11, 2023

Minnesota29 cities · 2.00″Alabama3 cities · 1.50″Oklahoma1 city · 1.00″
The full US hail map for August 11, 2023 →

Other Iowa hail days

August 12, 20262 cities · 1.00″August 7, 20262 cities · 1.00″July 27, 20263 cities · 1.00″July 21, 20261 city · 1.00″July 20, 20267 cities · 1.50″July 4, 20261 city · 1.00″July 3, 20263 cities · 1.00″July 2, 20267 cities · 1.00″July 1, 20261 city · 1.50″June 30, 20261 city · 1.00″June 28, 20262 cities · 1.00″June 17, 20261 city · 1.00″
Every hail day across Iowa →
FAQ

Iowa hail on August 11, 2023

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

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