Hail size 2"
4 SSW Alliance Box Butte County
“Trained Spotter reported 2 inch hail 4 miles SSW of Alliance. (CYS)”
— NOAA / SPC storm report
/ Storm field report · Box Butte
Hail in Alliance · Sep 5, 2026
Hit 7 days ago
The estimated-size surface reached 3" aloft; NEXRAD logged no point detections over Alliance that day. At 3" — 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 3" ≈ baseball · radar-estimated size aloft
Homes in the hail footprint 6,431
Ground reports 8 7 hail · 1 wind
Radar surfaces 1 Estimated size only
Convective day · Sep 5, 2026 · noon–noon UTC
Severity
The most severe storm Alliance has seen in the last 12 months
Composite score · 7.9 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
7.9 /10
- Peak hail signal
- 75 /100
- Homes exposed
- 76 /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 Alliance saw the hail — from two instruments
Sep 5, 2026 · Alliance, NE
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Max size
3"
Only the radar-estimated size surface resolved for Sep 5, 2026 — this storm produced no NEXRAD point detections over Alliance, so there is one map to show, not two.
The storm in context
Where Sep 5, 2026 sits in Alliance's hail record.
This was Alliance's 16th recorded hail day, arriving 13 days after the Aug 23, 2026 storm. By severity it ranks 1st of the 16 storms we have logged here. Radar put the day's largest stone over Alliance at 3" — radar-estimated size aloft.
The Sep 5, 2026 convective day was bigger than Alliance: the same system put hail over 514 other tracked cities, 33 of them in Nebraska. Nearest: Hemingford (11 miles north, up to 2.25"); Angora (24 miles south, up to 3"); Broadwater (38 miles south, up to 2.25").
These maps are stills. In the app this date is one of 16 Alliance 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
8 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.
Hail reports
7 reports Hail size 1"
4 SSW Alliance Box Butte County
“Storm chaser live stream shows accumulating hail along Highway 387 southwest of Alliance. The shoulders were completed covered... with the left lane completely covered (CYS)”
— NOAA / SPC storm report
Hail size 2"
3 SSW Alliance Box Butte County
“Trained Spotter reports accumulating hail up to 2 inches in diameter and around 3 inches deep along Highway 385 SSW of Alliance. (CYS)”
— NOAA / SPC storm report
Hail size 1"
9 SSW Alliance Morrill County
“Trained Spotter reported 1 inch hail along Highway 385... 9 miles SSW of Alliance. (CYS)”
— NOAA / SPC storm report
Hail size 2"
5 W Alliance Box Butte County
“Trained Spotter reported 2 inch hail 5 miles W of Alliance. (CYS)”
— NOAA / SPC storm report
Hail size 1.5"
6 W Alliance Box Butte County
“Trained Spotter reported 1.5 inch hail 7 Miles S of Berea and 16 miles SSE of Hemingford. (CYS)”
— NOAA / SPC storm report
Hail size 2.5"
5 WNW Alliance Box Butte County
“Trained Weather Spotter has reported 2.5 inch hail 5 miles WNW of Alliance. (CYS)”
— NOAA / SPC storm report
Wind reports
1 report Wind gust 66 mph
5 SE Alliance Box Butte County
“ASOS station KAIA 4 ESE Alliance. (CYS)”
— 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 208 minutes, from to .
Severe hail signal
What 3" hail means for Alliance 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.
6,431 homes × $12,000 avg. claim
Potential roof exposure
$77M
Potential roof exposure — 6,431 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 32 jobs
- Illustrative work
- ~$480K
Close just 0.5% of the 6,431 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
September 2028
Claims from this storm can typically be filed until around September 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 $1,351 on top of the $150 plan.
Alliance hail history
Other storms in Alliance.
16 recorded storm days in Alliance, NE
Estimated-size surface Storm date Alliance / NE
Aug 23, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
Aug 17, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
Aug 15, 2026
1.25" Estimated 1.25"
1 ground report Open report →
Estimated-size surface Storm date Alliance / NE
Aug 12, 2026
2.25" Estimated 2.25"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
Aug 9, 2026
1" Estimated 1"
1 ground report Open report →
Estimated-size surface Storm date Alliance / NE
Jul 28, 2026
3" Signatures 3" Estimated 1.75"
2 ground reports Open report →
Estimated-size surface Storm date Alliance / NE
Jul 9, 2026
1.75" Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
Jul 6, 2026
3" Signatures 3" Estimated 2"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
Jul 3, 2026
3" Signatures 3" Estimated 2"
1 ground report Open report →
Estimated-size surface Storm date Alliance / NE
Jun 27, 2026
2.75" Signatures 2.75" Estimated 2.5"
2 ground reports Open report →
Estimated-size surface Storm date Alliance / NE
Jun 26, 2026
1" Signatures 1" Estimated 0.75"
2 ground reports Open report →
Estimated-size surface Storm date Alliance / NE
Jun 8, 2026
1.75" Signatures 1.75" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
Jun 1, 2026
2.5" Signatures 2.5" Estimated 1.5"
1 ground report Open report →
Estimated-size surface Storm date Alliance / NE
May 30, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Alliance / NE
May 29, 2026
1" Signatures 1" Estimated 0.5"
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 6, 2026.