Wind gust 61 mph
3 NNE White Ranch Open Jefferson County
“Mesonet station UP709 Clayws. (BOU)”
— NOAA / SPC storm report
/ Storm field report · Jefferson
Hail in Golden · Jul 24, 2026
NEXRAD logged 53 hail signatures up to 2.5"; the estimated-size surface reached 1.5" aloft. At 2.5" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Peak hail signal 2.5" ≈ baseball · the largest NEXRAD radar signature
Homes in the hail footprint 556
Ground reports 3 3 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jul 24, 2026 · noon–noon UTC
Severity
The most severe storm Golden has seen in the last 12 months
Composite score · 5.9 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.9 /10
- Peak hail signal
- 63 /100
- Homes exposed
- 55 /100
- Ground truth
- 50 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Golden saw the hail — from two instruments
Jul 24, 2026 · Golden, CO
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Max size
2.5"
Detections
53
Radar-estimated hail size Surface resolved
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
1.5"
The storm in context
Where Jul 24, 2026 sits in Golden's hail record.
This was Golden's 6th recorded hail day, arriving 28 days after the Jun 26, 2026 storm. By severity it ranks 1st of the 9 storms we have logged here. Radar put the day's largest stone over Golden at 2.5" — the largest NEXRAD radar signature.
The Jul 24, 2026 convective day was bigger than Golden: the same system put hail over 221 other tracked cities, 12 of them in Colorado. Nearest: Nederland (9 miles northwest, up to 1"); Arvada (13 miles southeast, up to 2.5"); Boulder (14 miles north, up to 2.5").
These maps are stills. In the app this date is one of 9 Golden storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
3 reports filed with the NWS
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
Wind reports
3 reports Wind gust 61 mph
4 SSW Rocky Flats Jefferson County
“Mesonet station TT867 Arvada. (BOU)”
— NOAA / SPC storm report
Wind gust 70 mph
3 SW Rocky Flats Jefferson County
“Mesonet station CO109 Rocky Flats Hwy 93 and 72. (BOU)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from White Ranch Open and Rocky Flats — beyond Golden itself.
Severe hail signal
What 2.5" hail means for Golden roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
556 homes × $12,000 avg. claim
Potential roof exposure
$6.7M
Potential roof exposure — 556 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 3 jobs
- Illustrative work
- ~$45K
Close just 0.5% of the 556 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
July 2028
Claims from this storm can typically be filed until around July 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $117 on top of the $150 plan.
Golden hail history
Other storms in Golden.
9 recorded storm days in Golden, CO
Estimated-size surface Storm date Golden / CO
Sep 6, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
NEXRAD surface Storm date Golden / CO
Jul 31, 2026
0.5" Signatures 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Golden / CO
Jul 28, 2026
0.5" Signatures 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Golden / CO
Jun 26, 2026
1.5" Signatures 1.5" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Golden / CO
Jun 25, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
NEXRAD surface Storm date Golden / CO
Jun 2, 2026
0.5" Signatures 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Golden / CO
May 29, 2026
0.75" Signatures 0.75" Estimated 0.5"
No ground reports filed Open report →
NEXRAD surface Storm date Golden / CO
May 28, 2026
No ground reports filed Open report →
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A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Sep 7, 2026.