Tornado Rating unknown
2 E North Sterling Rese Logan County
“(BOU)”
— NOAA / SPC storm report
/ Storm field report · Logan
Hail in Sterling · Jun 30, 2026
NEXRAD logged 0 hail signatures up to 4"; the estimated-size surface reached 3" aloft. At 4" — softball or larger — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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Peak hail signal 4" ≈ softball or larger · the largest NEXRAD radar signature
Homes in the hail footprint 8,708
Ground reports 4 1 hail · 1 wind · 2 tornado
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jun 30, 2026 · noon–noon UTC
Severity
The most severe storm Sterling has seen in the last 12 months
Composite score · 9.5 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
9.5 /10
- Peak hail signal
- 100 /100
- Homes exposed
- 79 /100
- Ground truth
- 100 /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 Sterling saw the hail — from two instruments
Jun 30, 2026 · Sterling, 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
4"
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
3"
The storm in context
Where Jun 30, 2026 sits in Sterling's hail record.
This was Sterling's 13th recorded hail day, arriving 7 days after the Jun 23, 2026 storm. By severity it ranks 1st of the 24 storms we have logged here. Radar put the day's largest stone over Sterling at 4" — the largest NEXRAD radar signature.
The Jun 30, 2026 convective day was bigger than Sterling: the same system put hail over 720 other tracked cities, 27 of them in Colorado. Nearest: Iliff (17 miles northeast, up to 4"); Fleming (18 miles east, up to 4"); Merino (21 miles southwest, up to 1.75").
These maps are stills. In the app this date is one of 24 Sterling 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
4 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.
Tornado reports
2 reports Tornado Rating unknown
5 E Sterling Logan County
“Tornado reported 1 mile north of US 6. (BOU)”
— NOAA / SPC storm report
Hail reports
1 report Hail size 1"
6 S North Sterling Rese Logan County
“(BOU)”
— NOAA / SPC storm report
Wind reports
1 report Wind gust 74 mph
3 NW Iliff Logan County
“Ambient Weather Station. (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.
Hail was reported over 14 minutes, from to .
Reports came from North Sterling Rese and Iliff — beyond Sterling itself.
Severe hail signal
What 4" hail means for Sterling 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.
8,708 homes × $12,000 avg. claim
Potential roof exposure
$104M
Potential roof exposure — 8,708 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 44 jobs
- Illustrative work
- ~$660K
Close just 0.5% of the 8,708 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
June 2028
Claims from this storm can typically be filed until around June 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 $1,829 on top of the $150 plan.
Sterling hail history
Other storms in Sterling.
24 recorded storm days in Sterling, CO
Estimated-size surface Storm date Sterling / CO
Sep 5, 2026
2" Estimated 2"
1 ground report Open report →
Estimated-size surface Storm date Sterling / CO
Aug 26, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Aug 25, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Aug 15, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Aug 14, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Aug 12, 2026
1.75" Estimated 1.75"
3 ground reports Open report →
Estimated-size surface Storm date Sterling / CO
Jul 28, 2026
4" Signatures 4" Estimated 3"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Jul 22, 2026
1" Signatures 1" Estimated 1"
5 ground reports Open report →
Estimated-size surface Storm date Sterling / CO
Jul 4, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Jul 3, 2026
2.5" Signatures 2.5" Estimated 1.75"
1 ground report Open report →
Estimated-size surface Storm date Sterling / CO
Jul 2, 2026
2.75" Signatures 2.75" Estimated 1.25"
2 ground reports Open report →
Estimated-size surface Storm date Sterling / CO
Jun 23, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Jun 22, 2026
2.75" Estimated 2.75"
9 ground reports Open report →
Estimated-size surface Storm date Sterling / CO
Jun 21, 2026
1.5" Estimated 1.5"
2 ground reports Open report →
Estimated-size surface Storm date Sterling / CO
Jun 9, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Jun 8, 2026
1" Signatures 1" Estimated 0.5"
1 ground report Open report →
NEXRAD surface Storm date Sterling / CO
Jun 4, 2026
0.75" Signatures 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
Jun 1, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
May 30, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
May 29, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
May 21, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
May 16, 2026
2.25" Signatures 2.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Sterling / CO
May 9, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
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Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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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 6, 2026.