The radar-estimated size surface caught this storm, reaching 4" aloft. NEXRAD logged no point detections over Willow Springs this day. At 4" — softball or larger — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
4"
≈ softball or larger · radar-estimated size aloft29,207
3
2 hail · 1 tornadoOverview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
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-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 Jul 27, 2026 — this storm produced no NEXRAD point detections over Willow Springs, so there is one map to show, not two.
This was Willow Springs's 4th recorded hail day, arriving 9 days after the Jul 18, 2026 storm. By severity it ranks 1st of the 4 storms we have logged here. Radar put the day's largest stone over Willow Springs at 4" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Willow Springs: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Lemont (5 miles west, up to 4"); Bridgeview (5 miles east, up to 2.75"); Palos Hills (5 miles east, up to 2.75").
These maps are stills from Willow Springs's Jul 27, 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.
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.
“An NWS damage survey confirmed an EF-0 tornado with peak winds of 85 mph... path length of 2.9 miles... and max width of 250 yards impacted Orland Park. (LOT)”
— NOAA / SPC storm report
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Reports came from Homer Glen, Darien, and Orland Park — beyond Willow Springs itself.
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.
$350M
Potential roof exposure — 29,207 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Radar updates in real time, spotter reports appear on the map as they're filed, and the full Willow Springs storm history — this Jul 27, 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 Willow Springs, IL
