Storm report · Corson

Hail in Keldron Jun 9, 2026

Both radar surfaces caught this storm: NEXRAD logged 10 hail signatures up to 2.25", and the radar-estimated size reached 1.5" aloft. At 2.25" — tennis ball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.

Largest hailstone

2.25"

≈ tennis ball · the largest NEXRAD radar signature
Homes in the hail footprint

25

Ground reports

0

none filed
Severity

The most severe storm Keldron 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.

4.1 /10
Hail size
56 /100

Largest hailstone — the top predictor of roof damage.

Homes exposed
28 /100

How many homes sit inside the storm's footprint.

Ground truth
0 /100

Independent storm reports filed with the NWS.

Two ways to read the storm

How Keldron 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-signature map of the hail storm over Keldron, SD on Jun 9, 2026

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 2.25" Detections 10
Radar-estimated hail size
Radar-estimated hail-size map of the storm over Keldron, SD on Jun 9, 2026

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 Jun 9, 2026 sits in Keldron's hail record

This was Keldron's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 2 storms we have logged here. Radar put the day's largest stone over Keldron at 2.25" — the largest NEXRAD radar signature.

The Jun 9, 2026 convective day was bigger than Keldron: the same system put hail over 646 other tracked cities, 67 of them in South Dakota. Nearest: Morristown (10 miles northeast, up to 1.75"); Watauga (17 miles east, up to 2.5"); Mc Intosh (25 miles east, up to 2.5").

These maps are stills from Keldron's Jun 9, 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.

Ground reports

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.

No ground reports were filed with the National Weather Service for this storm over Keldron. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.

Severe, roof-replacing hail

What 2.25" hail means for Keldron 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

$300K

Potential roof exposure — 25 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claims from this storm can typically be filed until around June 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.

Track hail over Keldron on the live map

Radar updates in real time, spotter reports appear on the map as they're filed, and the full Keldron storm history — this Jun 9, 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

Keldron hail history

2 recorded storm days in Keldron, SD

← All hail in Keldron

Other storms in Keldron

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.