Wind gust 63 mph
Big Bay LSZ248 County
“GLOS Mesonet station BIGM4 Big Bay Harbor. (MQT)”
— NOAA / SPC storm report
Hail in Big Bay Jul 20, 2026
Hit 14 days agoThe radar-estimated size surface caught this storm, reaching 1.25" aloft. NEXRAD logged no point detections over Big Bay this day.
Largest hailstone
1.25"
≈ half-dollar · radar-estimated size aloft Homes in the hail footprint
707
Ground reports
1
1 windBig Bay's only recorded storm in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.6 /10
- Hail size
- 31 /100
- Homes exposed
- 57 /100
- Ground truth
- 17 /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 Big Bay saw the hail — from two instruments
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
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
1.25"
Only the radar-estimated size surface resolved for Jul 20, 2026 — this storm produced no NEXRAD point detections over Big Bay, so there is one map to show, not two.
Where Jul 20, 2026 sits in Big Bay's hail record
This was Big Bay's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 1 storms we have logged here. Radar put the day's largest stone over Big Bay at 1.25" — radar-estimated size aloft.
The Jul 20, 2026 convective day was bigger than Big Bay: the same system put hail over 553 other tracked cities, 65 of them in Michigan. Nearest: Negaunee (20 miles southeast, up to 1.25"); Champion (21 miles south, up to 1.25"); Marquette (22 miles southeast, up to 1.25").
These maps are stills from Big Bay's Jul 20, 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
1 reportWhat 1.25" hail means for Big Bay 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
$8.5M
Potential roof exposure — 707 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
4 jobs
Illustrative work
~$60K
Claims from this storm can typically be filed until around July 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Track hail over Big Bay on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Big Bay storm history — this Jul 20, 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
Big Bay hail history
← All hail in Big Bay 1 recorded storm day in Big Bay, MI
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.