The radar-estimated size surface caught this storm, reaching 1.75" aloft. NEXRAD logged no point detections over Lombard this day.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
1.75"
≈ golf ball · radar-estimated size aloft85,513
11
8 hail · 1 wind · 2 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.
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for Jul 27, 2026 — this storm produced no NEXRAD point detections over Lombard, so there is one map to show, not two.
This was Lombard's 3rd recorded hail day, arriving 24 days after the Jul 3, 2026 storm. By severity it ranks 1st of the 3 storms we have logged here. Radar put the day's largest stone over Lombard at 1.75" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Lombard: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Berkeley (5 miles east, up to 1.75"); Melrose Park (5 miles east, up to 1.75"); Carol Stream (5 miles west, up to 1.75").
These maps are stills from Lombard'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.
“Updates prior report. An NWS storm survey confirmed an EF-0 tornado with peak winds of 75 mph... peak width of 100 yards... and path length of 1 mile impacted Glen Elly (LOT)”
— NOAA / SPC storm report
“Concentrated tree damage on Stacy Court in North Glen Ellyn... including large trees snapped and/or uprooted... some onto homes and causing damage. This area lines up w (LOT)”
— NOAA / SPC storm report
“Relayed via mping. (LOT)”
— NOAA / SPC storm report
“Public report of ping pong ball size hail at Oakbrook Terrace. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
“Public report of golf ball size hail in Oak Brook. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
“Photo shared on social media showing a hailstone roughly two inches in diameter. (LOT)”
— NOAA / SPC storm report
“Relayed via mping. (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
“Public report of nickel to quarter size hail in Villa Park. Some melting occurred prior to measurement. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
“(LOT)”
— NOAA / SPC storm report
Hail was reported over 24 minutes, from to .
Reports came from Glendale Heights, Oakbrook Terrace, Oak Brook, York Center, Elmhurst, and Villa Park — beyond Lombard itself.
At an inch and a half, hail cracks shingles, strips granules down to the mat, and dents gutters, vents, and siding. A footprint like this typically produces a wave of insurance claims — and the contractor who reaches the homeowner first usually gets the inspection.
$1B
Potential roof exposure — 85,513 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 Lombard 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
3 recorded storm days in Lombard, IL
