Hail in Coal City · Aug 12, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Coal City that day. 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 most severe storm Coal City 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
- 13 /100
- Homes exposed
- 70 /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 Coal City 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 Aug 12, 2026 — this storm produced no NEXRAD point detections over Coal City, so there is one map to show, not two.
The storm in context
Where Aug 12, 2026 sits in Coal City's hail record.
This was Coal City's 3rd recorded hail day, arriving 62 days after the Jun 11, 2026 storm. By severity it ranks 1st of the 3 storms we have logged here. Radar put the day's largest stone over Coal City at 0.5" — radar-estimated size aloft.
The Aug 12, 2026 convective day was bigger than Coal City: the same system put hail over 507 other tracked cities, 79 of them in Illinois. Nearest: Channahon (9 miles northeast, up to 0.5"); Wilmington (10 miles east, up to 0.5"); Manhattan (17 miles northeast, up to 0.5").
These maps are stills. In the app this date is one of 3 Coal City 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.
Nobody on the ground filed a report over Coal City for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Below the severe threshold
What 0.5" hail means for Coal City roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$39M
Potential roof exposure — 3,251 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 16 jobs
- Illustrative work
- ~$240K
Close just 0.5% of the 3,251 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 $683 on top of the $150 plan.
Coal City hail history
Other storms in Coal City.
Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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