Hail map for Louisville, CO — July 11, 2025
NOAA radar detected hail up to 1.00″ — quarter size — within 5 miles of Louisville on July 11, 2025.
- Max hail size
- 1.00″
- quarter
- Impact rating
- 3/10
- from stone size
- Size bands over the city
- 1
- distinct radar bands
- Measured on the ground
- 1.00″
- 1.3 mi away · Trained Spotter
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
Work Louisville on the live hail map
- The whole state around Louisville, with this swath already on it
- Three years of hail swaths, filterable by stone size
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Did hail hit your address?
This page covers Louisville as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.
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Other hail dates for Louisville
Every storm over Louisville →What people on the ground measured in Louisville, CO on July 11, 2025
4 reports filed with the National Weather Service — 1 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.
- 1.00″ quarter size Trained Spotter1 NNW Louisville, CO · 1.3 mi away6:27 PM MDTBoulder County
- 0.75″ penny size Public2 W Lafayette, CO · 2.2 mi away6:29 PM MDTBoulder County
Report from mPING: Dime (0.75 in.).
- 0.75″ penny size Public2 S Lafayette, CO · 2.3 mi away6:48 PM MDTBoulder County
Report from mPING: Dime (0.75 in.).
- 0.75″ penny size Cocorahs2 SSW Niwot, CO · 6.0 mi away6:10 PM MDTBoulder County
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.
Louisville hail on July 11, 2025
NOAA radar estimated stones up to 1.00 inches — quarter size — within about 5 miles of Louisville that day, across 1 distinct size band. Sizes vary street to street inside a single swath.