Hail size 1.75"
4 N Clarkson Stanton County
“(OAX)”
— NOAA / SPC storm report
Hail in Clarkson May 18, 2026
Both radar surfaces caught this storm: NEXRAD logged 20 hail signatures up to 1.5", and the radar-estimated size reached 0.5" aloft.
Largest hailstone
1.5"
≈ ping-pong ball · the largest NEXRAD radar signature Homes in the hail footprint
995
Ground reports
1
1 hailThe 3rd most severe storm Clarkson 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.
4.0 /10
- Hail size
- 38 /100
- Homes exposed
- 60 /100
- Ground truth
- 17 /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 Clarkson saw the hail — from two instruments
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
NEXRAD radar signatures
NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Max size
1.5"
Detections
20
Radar-estimated hail size
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
0.5"
Where May 18, 2026 sits in Clarkson's hail record
This was Clarkson's 4th recorded hail day, arriving 1 day after the May 17, 2026 storm. By severity it ranks 3rd of the 9 storms we have logged here. Radar put the day's largest stone over Clarkson at 1.5" — the largest NEXRAD radar signature.
The May 18, 2026 convective day was bigger than Clarkson: the same system put hail over 726 other tracked cities, 121 of them in Nebraska. Nearest: Stanton (7 miles north, up to 1.25"); Leigh (9 miles southwest, up to 1.25"); Howells (10 miles east, up to 1.5").
These maps are stills from Clarkson's May 18, 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
1 reportWhat 1.5" hail means for Clarkson roofs
At an inch and a half, hail cracks shingles, strips granules down to the mat, and dents gutters, vents, and siding. A footprint like this typically produces a wave of insurance claims — and the contractor who reaches the homeowner first usually gets the inspection.
What this storm is worth to a roofer
$12M
Potential roof exposure — 995 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
5 jobs
Illustrative work
~$75K
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 Clarkson on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Clarkson storm history — this May 18, 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
Clarkson hail history
← All hail in Clarkson 9 recorded storm days in Clarkson, NE
Other storms in Clarkson
Jul 30, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jul 26, 2026
1" Estimated 1"
No ground reports filed 
Jul 8, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Jul 2, 2026
2.5" Signatures 2.5" Estimated 1.5"
No ground reports filed 
Jun 30, 2026
1" Signatures 1"
No ground reports filed 
May 17, 2026
1.75" Signatures 1.75" Estimated 0.75"
2
ground reports 
Apr 15, 2026
0.5" Estimated 0.5"
No ground reports filed 
Mar 5, 2026
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.