Wind gust 60 mph
8 NE Karlstad Roseau County
“MN DOT sensor. (FGF)”
— NOAA / SPC storm report
/ Storm field report · Kittson
Hail in Lake Bronson · Sep 6, 2026
Hit 6 days ago
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Lake Bronson that day. Open it on the live map to see the swath over the streets.
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Peak hail signal 0.5" ≈ pea to penny · radar-estimated size aloft
Homes in the hail footprint 219
Ground reports 1 1 wind
Radar surfaces 1 Estimated size only
Convective day · Sep 6, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Lake Bronson has seen in the last 12 months
Composite score · 2.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
2.2 /10
- Peak hail signal
- 13 /100
- Homes exposed
- 47 /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 Lake Bronson saw the hail — from two instruments
Sep 6, 2026 · Lake Bronson, MN
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.
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
0.5"
Only the radar-estimated size surface resolved for Sep 6, 2026 — this storm produced no NEXRAD point detections over Lake Bronson, so there is one map to show, not two.
The storm in context
Where Sep 6, 2026 sits in Lake Bronson's hail record.
This was Lake Bronson's 5th recorded hail day, arriving 44 days after the Jul 24, 2026 storm. By severity it ranks 3rd of the 5 storms we have logged here. Radar put the day's largest stone over Lake Bronson at 0.5" — radar-estimated size aloft.
The Sep 6, 2026 convective day was bigger than Lake Bronson: the same system put hail over 608 other tracked cities, 41 of them in Minnesota. Nearest: Karlstad (8 miles southeast, up to 0.5"); Kennedy (11 miles west, up to 0.75"); Greenbush (12 miles east, up to 0.5").
These maps are stills. In the app this date is one of 5 Lake Bronson 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 Karlstad — beyond Lake Bronson itself.
Below the severe threshold
What 0.5" hail means for Lake Bronson roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
219 homes × $12,000 avg. claim
Potential roof exposure
$2.6M
Potential roof exposure — 219 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 219 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 $46 on top of the $150 plan.
Lake Bronson hail history
Other storms in Lake Bronson.
5 recorded storm days in Lake Bronson, MN
Estimated-size surface Storm date Lake Bronson / MN
Jul 24, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Lake Bronson / MN
Jul 16, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Lake Bronson / MN
Jul 6, 2026
2" Signatures 2" Estimated 1.5"
1 ground report Open report →
Estimated-size surface Storm date Lake Bronson / MN
Jun 29, 2026
1" Signatures 1" Estimated 0.5"
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.