Wind gust 62 mph
2 W Mountain Lake Cottonwood County
“Davis Personal Weather Station. (FSD)”
— NOAA / SPC storm report
Hail in Mountain Lake Jun 29, 2026
Hit 35 days agoBoth radar surfaces caught this storm: NEXRAD logged 0 hail signatures up to 1", and the radar-estimated size reached 0.5" aloft.
Largest hailstone
1"
≈ quarter · the largest NEXRAD radar signature Homes in the hail footprint
669
Ground reports
6
6 windThe 3rd most severe storm Mountain Lake has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.4 /10
- Hail size
- 25 /100
- Homes exposed
- 57 /100
- Ground truth
- 100 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Mountain Lake saw the hail — from two instruments
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
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
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"
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 12 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: Bingham Lake (7 miles south, up to 1"); Windom (14 miles south, up to 1"); Saint James (16 miles northeast, up to 0").
These maps are stills from Mountain Lake's Jun 29, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
What people on the ground reported
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
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Reports came from Bingham Lake and Bergen — beyond Mountain Lake itself.
What 1" hail means for Mountain Lake roofs
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
What this storm is worth to a roofer
$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
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.
Track hail over Mountain Lake on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Mountain Lake storm history — this Jun 29, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
Mountain Lake hail history
← All hail in Mountain Lake 12 recorded storm days in Mountain Lake, MN
Other storms in Mountain Lake
Jul 25, 2026
Jul 6, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed 
Jul 4, 2026
0.75" Signatures 0.75"
No ground reports filed 
Jul 2, 2026
2" Signatures 2" Estimated 1.25"
No ground reports filed 
Jun 27, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jun 9, 2026
0.5" Estimated 0.5"
No ground reports filed 
May 25, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed 
May 18, 2026
2.5" Signatures 2.5"
No ground reports filed 
May 17, 2026
2.5" Signatures 2.5" Estimated 1.75"
No ground reports filed 
Apr 23, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Apr 13, 2026
1.75" Signatures 1.75" Estimated 1"
2
ground reports
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 surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.