Hail map — August 13, 2026
NOAA radar detected hail of an inch or more over 16 cities across 8 states on August 13, 2026. The largest stones — 2.00″, hen egg size — fell over Centennial, CO.
- States hit
- 8
- Cities hit
- 16
- Largest stone
- 2.00″
- hen egg size
- Impact rating
- 7/10
- 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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States hit on August 13, 2026
Every state where NOAA radar put an inch or more of hail over a city that day, biggest stone first.
Hardest hit on August 13, 2026
What people on the ground measured in the US on August 13, 2026
15 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.
- 1.75″ golf ball size Public2 W Arapahoe Park, CO4:25 PM MDTArapahoe County
Report from mPING: Golf Ball (1.75 in.).
- 1.75″ golf ball size Public4 S Bushnell, NE9:49 PM CDTKimball County
- 1.75″ golf ball size Emergency Mngr4 ENE Alexandria, IN12:26 AM EDTMadison County
- 1.50″ half dollar size Public2 E Fair Haven, VT2:45 PM EDTRutland County
Picture on social media.
- 1.50″ half dollar size Public2 E Fair Haven, VT2:50 PM EDTRutland County
Picture on social media.
- 1.50″ half dollar size Trained Spotter2 NNW Foxfield, CO4:15 PM MDTArapahoe County
- 1.50″ half dollar size Cocorahs2 NNW Foxfield, CO4:15 PM MDTArapahoe County
- 1.50″ half dollar size PublicSummitville, IN12:19 AM EDTMadison County
Report from mPING. Time estimated from radar.
- 1.25″ half dollar size PublicCentennial, CO4:10 PM MDTArapahoe County
Report from mPING: Half Dollar (1.25 in.).
- 1.00″ quarter size Storm Chaser2 S Portland Jetport, ME3:23 PM EDTCumberland County
- 1.00″ quarter size Law EnforcementLee Vining, CA12:55 PM PDTMono County
1 inch hail in Lee Vining.
- 1.00″ quarter size Broadcast Media1 WNW Foxfield, CO4:07 PM MDTArapahoe County
2 to 3 feet deep hail drifts. Hail accumulation up to 3 inches in yards with most leaves stripped from trees. Quarter size hail found approximately an hour after hail fell. Time estimated by radar.
- 1.00″ quarter size Trained Spotter2 W Arapahoe Park, CO4:19 PM MDTArapahoe County
Also reported dents on metal roof vents, and a significant amount of leaves stripped from trees.
- 1.00″ quarter size Public1 W Arapahoe Park, CO4:30 PM MDTArapahoe County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Trained Spotter1 NE Rigdon, IN11:56 PM EDTGrant County
Showing the 15 largest of 37 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 hail days
US hail on August 13, 2026
NOAA radar put hail of an inch or more over 16 cities across 8 states on August 13, 2026. The largest stones — 2.00 inches, hen egg size — were over Centennial, CO. Every state hit is listed on this page, and every city under it.