Wind gust 71 mph
2 NE Severance Weld County
“(BOU)”
— NOAA / SPC storm report
/ Storm field report · Weld
Hail in Greeley · Aug 13, 2026
Hit 30 days ago
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 1.75" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · radar-estimated size aloft
Homes in the hail footprint 2,118
Ground reports 1 1 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Aug 13, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Greeley has seen in the last 12 months
Composite score · 4.5 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.5 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 67 /100
- Ground truth
- 17 /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 Greeley saw the hail — from two instruments
Aug 13, 2026 · Greeley, 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
0"
Detections
0
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
1.75"
The storm in context
Where Aug 13, 2026 sits in Greeley's hail record.
This was Greeley's 6th recorded hail day, arriving 36 days after the Jul 8, 2026 storm. By severity it ranks 3rd of the 7 storms we have logged here. Radar put the day's largest stone over Greeley at 1.75" — radar-estimated size aloft.
The Aug 13, 2026 convective day was bigger than Greeley: the same system put hail over 437 other tracked cities, 22 of them in Colorado. Nearest: Fort Morgan (42 miles east, up to 1"); Grover (43 miles northeast, up to 0.5"); Aurora (50 miles south, up to 1.5").
These maps are stills. In the app this date is one of 7 Greeley 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
1 report 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
1 reportStorm 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 Severance — beyond Greeley itself.
High damage potential
What 1.75" hail means for Greeley roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
2,118 homes × $12,000 avg. claim
Potential roof exposure
$25M
Potential roof exposure — 2,118 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 11 jobs
- Illustrative work
- ~$165K
Close just 0.5% of the 2,118 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
August 2028
Claims from this storm can typically be filed until around August 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 $445 on top of the $150 plan.
Greeley hail history
Other storms in Greeley.
7 recorded storm days in Greeley, CO
Estimated-size surface Storm date Greeley / CO
Sep 6, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Greeley / CO
Jul 8, 2026
0.5" Signatures 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Greeley / CO
Jul 1, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Greeley / CO
Jun 26, 2026
0.75" Signatures 0.75" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Greeley / CO
Jun 20, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Greeley / CO
Jun 3, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Take your next area into the field.
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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.