NEXRAD logged 1 hail signature up to 1"; the estimated-size surface reached 0.5" 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 17, 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
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
The storm in context
This was Macomb's 3rd recorded hail day, arriving 15 days after the Apr 2, 2026 storm. By severity it ranks 1st of the 12 storms we have logged here. Radar put the day's largest stone over Macomb at 1" — the largest NEXRAD radar signature.
The Apr 17, 2026 convective day was bigger than Macomb: the same system put hail over 1,016 other tracked cities, 101 of them in Illinois. Nearest: Marietta (8 miles east, up to 1"); Vermont (14 miles south, up to 2.5"); Blandinsville (15 miles northwest, up to 1").
These maps are stills. In the app this date is one of 12 Macomb 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.
“This is a correction to a previous tornado LSR. EF1... peak wind speed 110 mph... path length 11.3 miles... path width 900 yds. This tornado entered Fulton County from (ILX)”
— NOAA / SPC storm report
“EF2... max wind speed 130 mph... path length 5.44 mi. The tornado touched down along County Rd 650 100 yards into McDonough County where it did significant tree damage. (ILX)”
— NOAA / SPC storm report
“The tornado began about 3.5 miles northeast of Industry where it did some tree damage followed by snapping of 7 power poles along N 600th Rd. It progressed east between (DVN)”
— NOAA / SPC storm report
“Corrects previous tstm wnd gst report timing. (DVN)”
— NOAA / SPC storm report
“(DVN)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
The storm tracked west at roughly 15 mph, based on the timing of ground reports.
Hail was reported over 62 minutes, from to .
Reports came from Fandon, Table Grove, and Industry — beyond Macomb itself.
Damage-capable hail signal
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
Potential roof exposure
$180K
Potential roof exposure — 15 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
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 $3 on top of the $150 plan.
Macomb hail history
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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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