NEXRAD logged 4 hail signatures up to 0.75"; the estimated-size surface reached 0" aloft. Open it on the live map to see the swath over the streets.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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Convective day · Apr 2, 2026 · noon–noon UTC
Severity
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
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.
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Estimated size field 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.
The storm in context
This was Williamsfield's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 2nd of the 6 storms we have logged here. Radar put the day's largest stone over Williamsfield at 0.75" — the largest NEXRAD radar signature.
The Apr 2, 2026 convective day was bigger than Williamsfield: the same system put hail over 160 other tracked cities, 84 of them in Illinois. Nearest: Toulon (12 miles northeast, up to 1.25"); Princeville (13 miles east, up to 1.5"); Brimfield (13 miles southeast, up to 1.5").
These maps are stills. In the app this date is one of 6 Williamsfield storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
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 tornado touched down about 2 miles southeast of Williamsfield just west of the Knox County line... where it destroyed an outbuilding. It crossed into Peoria County (ILX)”
— NOAA / SPC storm report
“The tornado touched down about 2 miles east of Elba Center where it did some tree damage just south of Knox Road 900 N. It progressed across I-74 near E Knox Rd where i (ILX)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Yates City — beyond Williamsfield itself.
Near the severe threshold
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
Potential roof exposure
$6.2M
Potential roof exposure — 516 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 516 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
April 2028
Claims from this storm can typically be filed until around April 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $108 on top of the $150 plan.
Williamsfield hail history
Estimated-size surface 
Estimated-size surface 
Estimated-size surface 
Estimated-size surface 
Estimated-size surface Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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