Colorado hail map — August 13, 2026
NOAA radar detected hail of an inch or more over 4 Colorado cities on August 13, 2026. The largest stones — 2.00″, hen egg size — fell over Centennial.
- Cities hit
- 4
- in Colorado
- 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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Colorado cities hit on August 13, 2026
What people on the ground measured in Colorado on August 13, 2026
9 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.
- 1.75″ golf ball size Public2 W Arapahoe Park, CO4:25 PM MDTArapahoe County
Report from mPING: Golf Ball (1.75 in.).
- 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
- 1.25″ half dollar size PublicCentennial, CO4:10 PM MDTArapahoe County
Report from mPING: Half Dollar (1.25 in.).
- 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.).
- 0.75″ penny size Public1 NE Centennial, CO4:10 PM MDTArapahoe County
Report from mPING: Dime (0.75 in.).
- 0.75″ penny size Public3 W Arapahoe Park, CO4:19 PM MDTArapahoe County
Report from mPING: Dime (0.75 in.).
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 Colorado hail days
Colorado hail on August 13, 2026
NOAA radar put hail of an inch or more over 4 Colorado cities that day. The largest stones — 2.00 inches, hen egg size — were over Centennial. Every city hit is listed above with its own stone size.