Hail in Granville · Jul 27, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.
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Convective day · Jul 27, 2026 · noon–noon UTC
Severity
The 7th most severe storm Granville 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
- 0 /100
- Homes exposed
- 0 /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 Granville 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 signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Only the NEXRAD radar-signature surface resolved for Jul 27, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
The storm in context
Where Jul 27, 2026 sits in Granville's hail record.
This was Granville's 4th recorded hail day, arriving 105 days after the Apr 13, 2026 storm. By severity it ranks 7th of the 7 storms we have logged here. Radar put the day's largest stone over Granville at 0" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Granville: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Newark (39 miles northeast, up to 1.25"); Morris (42 miles east, up to 0.5"); Minooka (47 miles east, up to 1.75").
These maps are stills. In the app this date is one of 7 Granville 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.
No ground reports were filed with the National Weather Service for this storm over Granville. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Below the severe threshold
What 0" hail means for Granville 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
Granville hail history
Other storms in Granville.
Estimated-size surface Aug 21, 2026
0.75"
Estimated-size surface Aug 11, 2026
0.75"
Estimated-size surface Aug 9, 2026
0.5"
Estimated-size surface Apr 13, 2026
1"
Estimated-size surface Apr 2, 2026
1"
Estimated-size surface Mar 31, 2026
1.25"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.