Hail size 1.25"
5 SSW Max McLean County
“US Air Force Observer reported half dollar size hail near Max. Hail fell for around 12 minutes. Also reports torrential rainfall. (BIS)”
— NOAA / SPC storm report
/ Storm field report · McLean
Hail in Garrison · Jun 29, 2026
NEXRAD logged 58 hail signatures up to 4"; the estimated-size surface reached 2.25" 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.
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Peak hail signal 4" ≈ softball or larger · the largest NEXRAD radar signature
Homes in the hail footprint 599
Ground reports 2 1 hail · 1 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jun 29, 2026 · noon–noon UTC
Severity
The most severe storm Garrison 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
- 100 /100
- Homes exposed
- 56 /100
- Ground truth
- 33 /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
Jun 29, 2026 · Garrison, ND
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Max size
4"
Detections
58
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
2.25"
The storm in context
Where Jun 29, 2026 sits in Garrison's hail record.
This was Garrison's 6th recorded hail day, arriving 1 day after the Jun 28, 2026 storm. By severity it ranks 1st of the 11 storms we have logged here. Radar put the day's largest stone over Garrison at 4" — the largest NEXRAD radar signature.
The Jun 29, 2026 convective day was bigger than Garrison: the same system put hail over 702 other tracked cities, 96 of them in North Dakota. Nearest: Coleharbor (10 miles south, up to 4"); Max (14 miles northeast, up to 4"); Underwood (17 miles southeast, up to 0.75").
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
2 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
1 reportWind reports
1 report Wind gust 62 mph
1 W Garrison McLean County
“ASOS station KN60 Garrison. (BIS)”
— 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 10 minutes, from to .
Reports came from Max — beyond Garrison itself.
Severe hail signal
What 4" hail means for Garrison 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.
599 homes × $12,000 avg. claim
Potential roof exposure
$7.2M
Potential roof exposure — 599 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 599 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 $126 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
Sep 6, 2026
1" Estimated 1"
1 ground report 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 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.