Hail size 1"
4 S Garrison McLean County
“Fort Stevenson State Park. (BIS)”
— NOAA / SPC storm report
/ Storm field report · McLean
Hail in Garrison · Sep 6, 2026
Hit 6 days ago
The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Garrison that day. Open it on the live map to see the swath over the streets.
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Peak hail signal 1" ≈ quarter · radar-estimated size aloft
Homes in the hail footprint 715
Ground reports 1 1 hail
Radar surfaces 1 Estimated size only
Convective day · Sep 6, 2026 · noon–noon UTC
Severity
The 5th most severe storm Garrison has seen in the last 12 months
Composite score · 3.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.2 /10
- Peak hail signal
- 25 /100
- Homes exposed
- 57 /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 Garrison saw the hail — from two instruments
Sep 6, 2026 · Garrison, ND
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
1"
Only the radar-estimated size surface resolved for Sep 6, 2026 — this storm produced no NEXRAD point detections over Garrison, so there is one map to show, not two.
The storm in context
Where Sep 6, 2026 sits in Garrison's hail record.
This was Garrison's 10th recorded hail day, arriving 7 days after the Aug 30, 2026 storm. By severity it ranks 5th of the 11 storms we have logged here. Radar put the day's largest stone over Garrison at 1" — radar-estimated size aloft.
The Sep 6, 2026 convective day was bigger than Garrison: the same system put hail over 608 other tracked cities, 69 of them in North Dakota. Nearest: Benedict (12 miles east, up to 0.5"); Max (14 miles northeast, up to 0.5"); Hazen (18 miles southwest, up to 1").
These maps are stills. In the app this date is one of 11 Garrison 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.
Hail reports
1 reportDamage-capable hail signal
What 1" hail means for Garrison roofs.
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
715 homes × $12,000 avg. claim
Potential roof exposure
$8.6M
Potential roof exposure — 715 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 4 jobs
- Illustrative work
- ~$60K
Close just 0.5% of the 715 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 $150 on top of the $150 plan.
Garrison hail history
Other storms in Garrison.
11 recorded storm days in Garrison, ND
Estimated-size surface Storm date Garrison / ND
Sep 7, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Garrison / ND
Aug 30, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Garrison / ND
Jul 30, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Garrison / ND
Jul 29, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Garrison / ND
Jun 29, 2026
4" Signatures 4" Estimated 2.25"
2 ground reports Open report →
Estimated-size surface Storm date Garrison / ND
Jun 28, 2026
4" Signatures 4" Estimated 2.5"
No ground reports filed Open report →
Estimated-size surface Storm date Garrison / ND
Jun 27, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Garrison / ND
Jun 9, 2026
1.5" Signatures 1.5" Estimated 0.75"
4 ground reports Open report →
Estimated-size surface Storm date Garrison / ND
Jun 7, 2026
0.75" Estimated 0.75"
4 ground reports Open report →
Estimated-size surface Storm date Garrison / ND
May 21, 2026
0.75" Estimated 0.75"
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 8, 2026.