Hail in Thornton Jul 27, 2026
Hit 7 days agoThe radar-estimated size surface caught this storm, reaching 1.25" aloft. NEXRAD logged no point detections over Thornton this day.
1.25"
≈ half-dollar · radar-estimated size aloft100,314
0
none filedThe most severe storm Thornton 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
- 31 /100
- Homes exposed
- 100 /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 Thornton saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Only the radar-estimated size surface resolved for Jul 27, 2026 — this storm produced no NEXRAD point detections over Thornton, so there is one map to show, not two.
Where Jul 27, 2026 sits in Thornton's hail record
This was Thornton's 2nd recorded hail day, arriving 24 days after the Jul 3, 2026 storm. By severity it ranks 1st of the 2 storms we have logged here. Radar put the day's largest stone over Thornton at 1.25" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Thornton: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: South Holland (0 miles north, up to 1.25"); Hazel Crest (5 miles west, up to 2"); Markham (5 miles west, up to 2").
These maps are stills from Thornton'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.
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 Thornton 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.
What 1.25" hail means for Thornton roofs
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
$1.2B
Potential roof exposure — 100,314 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Thornton on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Thornton 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
2 recorded storm days in Thornton, IL
