Hail size 1.5"
4 NE Canistota McCook County
“Ping pong ball sized hail damaged young crops in fields. (FSD)”
— NOAA / SPC storm report
/ Storm field report · McCook
Hail in Canistota · May 31, 2026
NEXRAD logged 12 hail signatures up to 2.5"; the estimated-size surface reached 1.5" aloft. At 2.5" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Peak hail signal 2.5" ≈ baseball · the largest NEXRAD radar signature
Homes in the hail footprint 97
Ground reports 2 2 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · May 31, 2026 · noon–noon UTC
Severity
The most severe storm Canistota has seen in the last 12 months
Composite score · 5.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.2 /10
- Peak hail signal
- 63 /100
- Homes exposed
- 40 /100
- Ground truth
- 33 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Canistota saw the hail — from two instruments
May 31, 2026 · Canistota, SD
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 Surface resolved
Radar signature field 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 Surface resolved
Estimated size field 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"
The storm in context
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 8 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 (8 miles east, up to 2.5"); Bridgewater (10 miles southwest, up to 2"); Salem (10 miles northwest, up to 2.25").
These maps are stills. In the app this date is one of 8 Canistota storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
2 reports filed with the NWS
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
Severe hail signal
What 2.5" hail means for Canistota roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
97 homes × $12,000 avg. claim
Potential roof exposure
$1.2M
Potential roof exposure — 97 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
May 2028
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.
Names and phones for every home in the footprint: at most $20 on top of the $150 plan.
Canistota hail history
Other storms in Canistota.
8 recorded storm days in Canistota, SD
Estimated-size surface Storm date Canistota / SD
Sep 11, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Canistota / SD
Jul 25, 2026
0.5" Estimated 0.5"
1 ground report Open report →
Estimated-size surface Storm date Canistota / SD
Jul 2, 2026
1.75" Signatures 1.75" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Canistota / SD
Jun 30, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Canistota / SD
Jun 27, 2026
0.5" Estimated 0.5"
1 ground report Open report →
Estimated-size surface Storm date Canistota / SD
Jun 9, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Canistota / SD
May 24, 2026
1.75" Estimated 1.75"
2 ground reports Open report →
The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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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 tells you where to look. Only an inspection confirms damage at an address. Last updated Sep 12, 2026.