Colorado hail map — September 20, 2026
NOAA radar detected hail of an inch or more over 2 Colorado cities on September 20, 2026. The largest stones — 1.00″, quarter size — fell over Johnstown.
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- The September 20, 2026 swath — and every other storm since 2023 across Colorado
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- Cities hit
- 2
- in Colorado
- Largest stone
- 1.00″
- quarter size
- Impact rating
- 3/10
- from stone size
Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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Colorado cities hit on September 20, 2026
What people on the ground measured in Colorado on September 20, 2026
12 reports filed with the National Weather Service — 4 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 3.10″ baseball size Public9 S Brandon, CO6:10 PM MDTKiowa County
Picture of measurement from social media.
- 3.10″ baseball size Public9 S Brandon, CO6:26 PM MDTKiowa County
Corrects previous hail report from 9 S Brandon. Picture of measurement from social media.
- 2.75″ baseball size Storm Chaser4 NE Wild Horse, CO4:22 PM MDTCheyenne County
Social media reports of baseball size hail, some hailstones potentially larger. Damaged windshield of a spotters vehicle.
- 2.75″ baseball size Trained Spotter3 E Wild Horse, CO4:40 PM MDTCheyenne County
Spotter reported baseball size hail near Wild Horse, CO.
- 2.75″ baseball size Public5 N Eads, CO5:04 PM MDTKiowa County
Report from mPING: Baseball (2.75 in.).
- 2.50″ hen egg size Storm Chaser10 N Boyero, CO3:33 PM MDTLincoln County
- 2.50″ hen egg size Public6 N Wild Horse, CO4:30 PM MDTCheyenne County
Social media report of tennis ball size hail north of Wild Horse, CO.
- 2.50″ hen egg size Trained Spotter6 S Kit Carson, CO5:09 PM MDTCheyenne County
- 2.00″ hen egg size Trained Spotter4 SSE Kit Carson, CO5:02 PM MDTCheyenne County
Corrects previous hail report from 4 SSE Kit Carson.
- 2.00″ hen egg size Trained Spotter4 SSE Kit Carson, CO5:11 PM MDTCheyenne County
- 1.75″ golf ball size Public8 SSW Holyoke, CO1:56 PM MDTPhillips County
Time and location estimated from radar.
- 1.75″ golf ball size Public5 N Alvin, CO2:28 PM MDTYuma County
Corrects previous hail report from 5 N Alvin. Social media report of golf ball size hail near Alvin, CO.
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 September 20, 2026
The full US hail map for September 20, 2026 →Other Colorado hail days
Shopping for a hail app to work Colorado?
This page is one storm. If you are deciding which tool to work Colorado with all season, these compare the ones roofers actually buy — with every price taken from the vendor's own site and linked.
- Best hail tracking apps, comparedHailMate, HailTrace, Hail Recon, HailStrike and RadarScope — every published price sourced and linked, and who each one is genuinely right for.
- HailMate vs HailTraceStreet-level NOAA swaths on a map your crew can knock, with the CRM already inside — instead of quote-only meteorologist maps billed on top of one.
- Hail map apps for roofers (and the Hail Recon alternative)Every storm on one map instead of loading dates one at a time — plus the canvassing and the whole claim, monthly, for what one state costs them a year.
- Best canvassing apps, comparedHailMate, SalesRabbit, SPOTIO, Knockio, RoofLink and Badger Maps — every published price sourced and linked, and two of them publish none.
Colorado hail on September 20, 2026
NOAA radar put hail of an inch or more over 2 Colorado cities that day. The largest stones — 1.00 inches, quarter size — were over Johnstown. Every city hit is listed above with its own stone size.