Wind gust 62 mph
2 W Mountain Lake Cottonwood County
“Davis Personal Weather Station. (FSD)”
— NOAA / SPC storm report
/ Storm field report · Cottonwood
Hail in Mountain Lake · Jun 29, 2026
NEXRAD logged 0 hail signatures up to 1"; the estimated-size surface reached 0.5" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1" ≈ quarter · the largest NEXRAD radar signature
Homes in the hail footprint 669
Ground reports 6 6 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jun 29, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Mountain Lake has seen in the last 12 months
Composite score · 4.4 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.4 /10
- Peak hail signal
- 25 /100
- Homes exposed
- 57 /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 Mountain Lake saw the hail — from two instruments
Jun 29, 2026 · Mountain Lake, MN
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.
NEXRAD radar signatures Surface resolved
Radar signature field The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Max size
1"
Detections
0
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
0.5"
The storm in context
Where Jun 29, 2026 sits in Mountain Lake's hail record.
This was Mountain Lake's 8th recorded hail day, arriving 2 days after the Jun 27, 2026 storm. By severity it ranks 3rd of the 14 storms we have logged here. Radar put the day's largest stone over Mountain Lake at 1" — the largest NEXRAD radar signature.
The Jun 29, 2026 convective day was bigger than Mountain Lake: the same system put hail over 702 other tracked cities, 240 of them in Minnesota. Nearest: Windom (5 miles west, up to 1"); Bingham Lake (7 miles south, up to 1"); Saint James (17 miles east, up to 0").
These maps are stills. In the app this date is one of 14 Mountain Lake 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
6 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.
Wind reports
6 reports Wind gust 76 mph
2 ENE Bingham Lake Cottonwood County
“Mesonet station MN150 T.h.60 - Mountain Lake - Mp 48. (FSD)”
— NOAA / SPC storm report
Wind gust 71 mph
3 SSE Mountain Lake Cottonwood County
“Ambient Personal Weather Station. (FSD)”
— NOAA / SPC storm report
Wind gust 63 mph
2 S Mountain Lake Cottonwood County
“Ambient Personal Weather Station. (FSD)”
— NOAA / SPC storm report
Wind gust 80 mph
4 NNW Bergen Jackson County
“Corrects previous tstm wnd gst report from 4 NNW Bergen. NDAWN Station. (FSD)”
— NOAA / SPC storm report
Wind gust 67 mph
4 NNW Bergen Jackson County
“NDAWN Station. (FSD)”
— 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.
Reports came from Bingham Lake and Bergen — beyond Mountain Lake itself.
Damage-capable hail signal
What 1" hail means for Mountain Lake 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.
669 homes × $12,000 avg. claim
Potential roof exposure
$8M
Potential roof exposure — 669 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 669 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 $140 on top of the $150 plan.
Mountain Lake hail history
Other storms in Mountain Lake.
14 recorded storm days in Mountain Lake, MN
Estimated-size surface Storm date Mountain Lake / MN
Sep 6, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Aug 7, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Jul 25, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Jul 6, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Jul 4, 2026
0.75" Signatures 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Jul 2, 2026
2" Signatures 2" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Jun 27, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Jun 9, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
May 25, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
NEXRAD surface Storm date Mountain Lake / MN
May 18, 2026
2.5" Signatures 2.5"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
May 17, 2026
2.5" Signatures 2.5" Estimated 1.75"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Apr 23, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Mountain Lake / MN
Apr 13, 2026
1.75" Signatures 1.75" Estimated 1"
2 ground reports Open report →
The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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For iPhone. Android coming soon.
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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.