Hail size 1.75"
6 W Le Roy Coffey County
“Report from mPING: Golf Ball (1.75 in.). (TOP)”
— NOAA / SPC storm report
Hail in Gridley May 31, 2026
Both radar surfaces caught this storm: NEXRAD logged 16 hail signatures up to 2.5", and the radar-estimated size reached 2" aloft. At 2.5" — baseball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
Largest hailstone
2.5"
≈ baseball · the largest NEXRAD radar signature Homes in the hail footprint
72
Ground reports
4
4 hailThe 2nd most severe storm Gridley has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.7 /10
- Hail size
- 63 /100
- Homes exposed
- 37 /100
- Ground truth
- 67 /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 Gridley saw the hail — from two instruments
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 radar signatures
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.
Max size
2.5"
Detections
16
Radar-estimated hail size
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.
Max size
2"
Where May 31, 2026 sits in Gridley's hail record
This was Gridley's 5th recorded hail day, arriving 13 days after the May 18, 2026 storm. By severity it ranks 2nd of the 9 storms we have logged here. Radar put the day's largest stone over Gridley at 2.5" — the largest NEXRAD radar signature.
The May 31, 2026 convective day was bigger than Gridley: the same system put hail over 637 other tracked cities, 89 of them in Kansas. Nearest: Madison (6 miles northwest, up to 2.5"); Hartford (11 miles north, up to 2.5"); Virgil (11 miles south, up to 1").
These maps are stills from Gridley's May 31, 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.
Hail reports
4 reports Hail size 3.5"
Gridley Coffey County
“Delayed report. Video and pictures on social media from storm chaser. (TOP)”
— NOAA / SPC storm report
Hail size 2.25"
3 E Gridley Coffey County
“Resent. Report from mPING: Hen Egg+ (2.25 in.). (TOP)”
— NOAA / SPC storm report
Hail size 1.75"
5 W Gridley Greenwood County
“Report from mPING. (ICT)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
The storm tracked east at roughly 15 mph, based on the timing of ground reports.
Hail was reported over 55 minutes, from to .
Reports came from Le Roy — beyond Gridley itself.
What 2.5" hail means for Gridley roofs
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
What this storm is worth to a roofer
$864K
Potential roof exposure — 72 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage. Claims from this storm can typically be filed until around May 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Track hail over Gridley on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Gridley storm history — this May 31, 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
Gridley hail history
← All hail in Gridley 9 recorded storm days in Gridley, KS
Other storms in Gridley
Jul 4, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Jun 16, 2026
2.25" Estimated 2.25"
No ground reports filed 
Jun 13, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jun 8, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed 
May 18, 2026
0.5" Estimated 0.5"
No ground reports filed 
Apr 26, 2026
3.75" Signatures 3.75" Estimated 2.25"
6
ground reports 
Mar 31, 2026
1.75" Signatures 1.75" Estimated 0.75"
No ground reports filed 
Mar 5, 2026
1" Signatures 1"
No ground reports filed
A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.