Hail in Mount Vernon · Aug 12, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0.75" aloft. Open it on the live map to see the swath over the streets.
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Convective day · Aug 12, 2026 · noon–noon UTC
Severity
The 8th most severe storm Mount Vernon 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
- 42 /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 Mount Vernon saw the hail — from two instruments
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
The storm in context
Where Aug 12, 2026 sits in Mount Vernon's hail record.
This was Mount Vernon's 7th recorded hail day, arriving 35 days after the Jul 8, 2026 storm. By severity it ranks 8th of the 8 storms we have logged here. Radar put the day's largest stone over Mount Vernon at 0.75" — radar-estimated size aloft.
The Aug 12, 2026 convective day was bigger than Mount Vernon: the same system put hail over 507 other tracked cities, 79 of them in Illinois. Nearest: Bonnie (12 miles southeast, up to 1.5"); Scheller (12 miles southwest, up to 0.75"); Belle Rive (15 miles southeast, up to 1.5").
These maps are stills. In the app this date is one of 8 Mount Vernon 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.
The National Weather Service logged no spotter reports for this storm over Mount Vernon. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Near the severe threshold
What 0.75" hail means for Mount Vernon 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
$1.5M
Potential roof exposure — 124 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 124 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
August 2028
Claims from this storm can typically be filed until around August 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 $26 on top of the $150 plan.
Mount Vernon hail history
Other storms in Mount Vernon.
Estimated-size surface Aug 21, 2026
1"
Estimated-size surface Jul 8, 2026
1.25"
Estimated-size surface Jul 4, 2026
1.25"
Estimated-size surface Jun 21, 2026
0.75"
Estimated-size surface May 16, 2026
2.25"
Estimated-size surface Apr 27, 2026
1.75"
NEXRAD surface Jan 8, 2026
1.75"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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