Both radar surfaces caught this storm: NEXRAD logged 1 hail signature up to 1", and the radar-estimated size reached 0.5" aloft.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
1"
≈ quarter · the largest NEXRAD radar signature15
5
2 wind · 3 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.
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.
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.
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.
This was Macomb's 3rd recorded hail day, arriving 15 days after the Apr 2, 2026 storm. By severity it ranks 1st of the 9 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 (11 miles east, up to 1"); Vermont (13 miles southeast, up to 2.5"); Blandinsville (15 miles northwest, up to 1").
These maps are stills from Macomb's Apr 17, 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.
“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
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.
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
$180K
Potential roof exposure — 15 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 Macomb storm history — this Apr 17, 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 Macomb, IL
Jun 17, 2026
1"
Jun 13, 2026
0.75"
Jun 11, 2026
0.75"
Jun 10, 2026
0.5"
May 18, 2026
0.5"
May 4, 2026
1"
Apr 2, 2026
0.75"
Mar 26, 2026
1"