Hail in Alto Pass Jul 4, 2026
Hit 30 days agoBoth radar surfaces caught this storm: NEXRAD logged 41 hail signatures up to 2", and the radar-estimated size reached 1" aloft. At 2" — tennis ball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
2"
≈ tennis ball · the largest NEXRAD radar signature636
0
none filedThe most severe storm Alto Pass has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 50 /100
- Homes exposed
- 56 /100
- Ground truth
- 0 /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 Alto Pass 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.
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.
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.
Where Jul 4, 2026 sits in Alto Pass's hail record
This was Alto Pass's 2nd recorded hail day, arriving 68 days after the Apr 27, 2026 storm. By severity it ranks 1st of the 4 storms we have logged here. Radar put the day's largest stone over Alto Pass at 2" — the largest NEXRAD radar signature.
The Jul 4, 2026 convective day was bigger than Alto Pass: the same system put hail over 2,035 other tracked cities, 146 of them in Illinois. Nearest: Cobden (7 miles south, up to 1"); Makanda (11 miles east, up to 2"); Murphysboro (14 miles north, up to 2").
These maps are stills from Alto Pass's Jul 4, 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.
The National Weather Service logged no spotter reports for this storm over Alto Pass. 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.
What 2" hail means for Alto Pass roofs
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
$7.6M
Potential roof exposure — 636 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Alto Pass on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Alto Pass storm history — this Jul 4, 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
4 recorded storm days in Alto Pass, IL
