Hail size 1.5"
4 NE Canistota McCook County
“Ping pong ball sized hail damaged young crops in fields. (FSD)”
— NOAA / SPC storm report
Hail in Canistota May 31, 2026
Both radar surfaces caught this storm: NEXRAD logged 12 hail signatures up to 2.5", and the radar-estimated size reached 1.5" 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
97
Ground reports
2
2 hailThe most severe storm Canistota 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.
5.2 /10
- Hail size
- 63 /100
- Homes exposed
- 40 /100
- Ground truth
- 33 /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 Canistota 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
2.5"
Detections
12
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
1.5"
Where May 31, 2026 sits in Canistota's hail record
This was Canistota's 2nd recorded hail day, arriving 7 days after the May 24, 2026 storm. By severity it ranks 1st of the 7 storms we have logged here. Radar put the day's largest stone over Canistota at 2.5" — the largest NEXRAD radar signature.
The May 31, 2026 convective day was bigger than Canistota: the same system put hail over 637 other tracked cities, 61 of them in South Dakota. Nearest: Humboldt (10 miles east, up to 2.5"); Bridgewater (11 miles west, up to 2"); Salem (11 miles north, up to 2.25").
These maps are stills from Canistota'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
2 reports Hail size 1.75"
2 N Canistota McCook County
“Most hail was pea to quarter sized... but a few were as big as golf balls. Farm fields further north are more damaged than his. (FSD)”
— NOAA / SPC storm report
What 2.5" hail means for Canistota 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
$1.2M
Potential roof exposure — 97 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 Canistota on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Canistota 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
Canistota hail history
← All hail in Canistota 7 recorded storm days in Canistota, SD
Other storms in Canistota
Jul 25, 2026
0.5" Estimated 0.5"
1
ground report 
Jul 2, 2026
1.75" Signatures 1.75" Estimated 1.5"
No ground reports filed 
Jun 30, 2026
Jun 27, 2026
0.5" Estimated 0.5"
1
ground report 
Jun 9, 2026
0.5" Estimated 0.5"
No ground reports filed 
May 24, 2026
1.75" Estimated 1.75"
2
ground reports
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.