Hail in Grant Park Jul 27, 2026
Hit 7 days agoThe radar-estimated size surface caught this storm, reaching 0.75" aloft. NEXRAD logged no point detections over Grant Park this day.
0.75"
≈ penny to nickel · radar-estimated size aloft1,219
0
none filedThe 4th most severe storm Grant Park 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
- 19 /100
- Homes exposed
- 62 /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 Grant Park 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 Grant Park, so there is one map to show, not two.
Where Jul 27, 2026 sits in Grant Park's hail record
This was Grant Park's 9th recorded hail day, arriving 7 days after the Jul 20, 2026 storm. By severity it ranks 4th of the 9 storms we have logged here. Radar put the day's largest stone over Grant Park at 0.75" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Grant Park: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Peotone (5 miles west, up to 1"); Monee (7 miles north, up to 1.25"); Manteno (9 miles southwest, up to 0.5").
These maps are stills from Grant Park'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.
The National Weather Service logged no spotter reports for this storm over Grant Park. 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 0.75" hail means for Grant Park roofs
Hail this size sits right at the edge of the National Weather Service severe threshold. Newer roofs usually shrug it off, but aging or already-worn shingles can bruise, and soft metals — vents, flashing, gutters — often show the first dents.
$15M
Potential roof exposure — 1,219 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Grant Park on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Grant Park 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
9 recorded storm days in Grant Park, IL
Other storms in Grant Park
Jul 20, 2026
Jul 18, 2026
0.5"
Jun 11, 2026
1"
May 4, 2026
Apr 13, 2026
1.25"
Mar 31, 2026
0.5"
Mar 26, 2026
Mar 10, 2026
2"