The radar-estimated size surface caught this storm, reaching 1.75" aloft. NEXRAD logged no point detections over Henry 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 aloft2,680
1
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.
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 Mar 10, 2026 — this storm produced no NEXRAD point detections over Henry, so there is one map to show, not two.
This was Henry's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 4 storms we have logged here. Radar put the day's largest stone over Henry at 1.75" — radar-estimated size aloft.
The Mar 10, 2026 convective day was bigger than Henry: the same system put hail over 470 other tracked cities, 100 of them in Illinois. Nearest: Wyoming (5 miles west, up to 1.25"); Lacon (9 miles southeast, up to 1.75"); Putnam (9 miles northeast, up to 1.5").
These maps are stills from Henry's Mar 10, 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.
“Video evidence from an Illinois River barge operator confirmed the starting point of a tornado 3.5 miles NW of Lacon. The EF-0 tornado crossed the IL river and continue (ILX)”
— NOAA / SPC storm report
Reports came from Sparland — beyond Henry 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.
$32M
Potential roof exposure — 2,680 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 Henry storm history — this Mar 10, 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 Henry, IL
