Hail in Griggsville May 16, 2026
Both radar surfaces caught this storm: NEXRAD logged 1 hail signature up to 0.75", and the radar-estimated size reached 0" aloft.
0.75"
≈ penny to nickel · the largest NEXRAD radar signature21
0
none filedThe 5th most severe storm Griggsville 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
- 19 /100
- Homes exposed
- 27 /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 Griggsville 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 May 16, 2026 sits in Griggsville's hail record
This was Griggsville's 6th recorded hail day, arriving 2 days after the May 14, 2026 storm. By severity it ranks 5th of the 7 storms we have logged here. Radar put the day's largest stone over Griggsville at 0.75" — the largest NEXRAD radar signature.
The May 16, 2026 convective day was bigger than Griggsville: the same system put hail over 711 other tracked cities, 70 of them in Illinois. Nearest: Bluffs (6 miles southeast, up to 1.5"); Baylis (8 miles west, up to 1"); Meredosia (11 miles east, up to 1").
These maps are stills from Griggsville's May 16, 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.
The National Weather Service logged no spotter reports for this storm over Griggsville. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
What 0.75" hail means for Griggsville roofs
Hail this size sits right at the edge of the National Weather Service severe threshold. Newer roofs usually shrug it off, but aging or already-worn shingles can bruise, and soft metals — vents, flashing, gutters — often show the first dents.
$252K
Potential roof exposure — 21 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Griggsville on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Griggsville storm history — this May 16, 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.
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7 recorded storm days in Griggsville, IL
Other storms in Griggsville
Jun 17, 2026
0.5"
May 14, 2026
1"
May 4, 2026
1"
Apr 27, 2026
2"
Apr 17, 2026
1.5"
Apr 3, 2026
1"