Hail in Alpena · Sep 2, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Alpena that day. Open it on the live map to see the swath over the streets.
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Convective day · Sep 2, 2026 · noon–noon UTC
Severity
The 4th most severe storm Alpena has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 19 /100
- Homes exposed
- 46 /100
- Ground truth
- 0 /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 Alpena 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.
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.
Only the radar-estimated size surface resolved for Sep 2, 2026 — this storm produced no NEXRAD point detections over Alpena, so there is one map to show, not two.
The storm in context
Where Sep 2, 2026 sits in Alpena's hail record.
This was Alpena's 9th recorded hail day, arriving 21 days after the Aug 12, 2026 storm. By severity it ranks 4th of the 9 storms we have logged here. Radar put the day's largest stone over Alpena at 0.75" — radar-estimated size aloft.
The Sep 2, 2026 convective day was bigger than Alpena: the same system put hail over 356 other tracked cities, 37 of them in Michigan. Nearest: Pigeon (83 miles south, up to 0.5"); Ubly (95 miles south, up to 0.75"); Cass City (97 miles south, up to 0.5").
These maps are stills. In the app this date is one of 9 Alpena 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
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.
For this storm over Alpena, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
Near the severe threshold
What 0.75" hail means for Alpena roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$2.3M
Potential roof exposure — 194 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 194 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 $41 on top of the $150 plan.
Alpena hail history
Other storms in Alpena.
Estimated-size surface Aug 12, 2026
0.5"
Estimated-size surface Jul 27, 2026
0.5"
Estimated-size surface Jul 16, 2026
0.5"
Estimated-size surface Jul 15, 2026
0.5"
Estimated-size surface Jul 10, 2026
0.5"
Estimated-size surface Jul 1, 2026
1"
Estimated-size surface Jun 13, 2026
0.75"
Estimated-size surface May 18, 2026
1.25"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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