Hail map for Longmont, CO — July 20, 2024
NOAA radar detected hail up to 1.00″ — quarter size — within 5 miles of Longmont on July 20, 2024.
- 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
- 1.50″
- 12.6 mi away · Public
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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- The whole state around Longmont, with this swath already on it
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This page covers Longmont 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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What people on the ground measured in Longmont, CO on July 20, 2024
14 reports filed with the National Weather Service — 3 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.
- 1.50″ half dollar size Public1 NW Campion, CO · 12.6 mi away7:44 PM MDTLarimer County
- 1.25″ half dollar size Cocorahs4 WSW Berthoud, CO · 8.4 mi away7:45 PM MDTLarimer County
Up to half dollar size hail fell for a duration of 6 minutes.
- 1.00″ quarter size Trained Spotter2 SSW Berthoud, CO · 7.1 mi away8:00 PM MDTLarimer County
- 1.00″ quarter size Cocorahs2 SSW Berthoud, CO · 7.1 mi away7:52 PM MDTLarimer County
Delayed report. Time estimated by radar.
- 1.00″ quarter size Cocorahs3 WSW Frederick, CO · 7.6 mi away8:15 PM MDTWeld County
Delayed report. Time estimated by radar.
- 1.00″ quarter size Public3 NW Campion, CO · 14.8 mi away7:34 PM MDTLarimer County
- 0.75″ penny size Trained Spotter2 NNE Longmont, CO · 2.3 mi away8:03 PM MDTBoulder County
- 0.75″ penny size Public3 W Dacono, CO · 7.6 mi away8:16 PM MDTWeld County
Report from mPING: Dime (0.75 in.).
- 0.75″ penny size Trained Spotter1 W Berthoud, CO · 9.9 mi away7:57 PM MDTLarimer County
- 0.50″ penny size PublicLongmont, CO · 0.5 mi away8:05 PM MDTBoulder County
Report from mPING: Half-inch (0.50 in.).
- 0.50″ penny size Public2 S Longmont, CO · 1.9 mi away8:09 PM MDTBoulder County
Report from mPING: Half-inch (0.50 in.).
- 0.50″ penny size Public2 NE Longmont, CO · 2.3 mi away8:10 PM MDTBoulder County
Report from mPING: Half-inch (0.50 in.).
- 0.50″ penny size Public3 NE Hygiene, CO · 3.3 mi away8:02 PM MDTBoulder County
Report from mPING: Half-inch (0.50 in.).
- 0.50″ penny size Public3 SE Mead, CO · 7.2 mi away8:16 PM MDTWeld County
Report from mPING: Half-inch (0.50 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.
Longmont hail on July 20, 2024
NOAA radar estimated stones up to 1.00 inches — quarter size — within about 5 miles of Longmont that day, across 1 distinct size band. Sizes vary street to street inside a single swath.