Hail in Mount Carroll Apr 17, 2026
Both radar surfaces caught this storm: NEXRAD logged 12 hail signatures up to 1", and the radar-estimated size reached 1.25" aloft.
1.25"
≈ half-dollar · radar-estimated size aloft477
0
none filedThe 3rd most severe storm Mount Carroll has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 31 /100
- Homes exposed
- 54 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Mount Carroll saw the hail — from two instruments
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.
Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
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.
Where Apr 17, 2026 sits in Mount Carroll's hail record
This was Mount Carroll's 4th recorded hail day, arriving 3 days after the Apr 14, 2026 storm. By severity it ranks 3rd of the 7 storms we have logged here. Radar put the day's largest stone over Mount Carroll at 1.25" — radar-estimated size aloft.
The Apr 17, 2026 convective day was bigger than Mount Carroll: the same system put hail over 1,016 other tracked cities, 101 of them in Illinois. Nearest: Savanna (5 miles west, up to 0.75"); Chadwick (9 miles southeast, up to 0.75"); Pearl City (15 miles northeast, up to 2.75").
These maps are stills from Mount Carroll'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.
What people on the ground reported
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.
For this storm over Mount Carroll, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
What 1.25" hail means for Mount Carroll roofs
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.
$5.7M
Potential roof exposure — 477 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Mount Carroll on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Mount Carroll 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
7 recorded storm days in Mount Carroll, IL
Other storms in Mount Carroll
Jul 9, 2026
Jul 3, 2026
1.25"
May 17, 2026
1"
Apr 14, 2026
0.75"
Apr 2, 2026
1.75"
Mar 30, 2026
1"