/ Storm field report · Pennington

Hail in Hill City · Jun 21, 2026

The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Hill City that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 0.5" ≈ pea to penny · radar-estimated size aloft
Homes in the hail footprint 2
Ground reports 0 none filed
Radar surfaces 1 Estimated size only

Convective day · Jun 21, 2026 · noon–noon UTC

Severity

The 14th most severe storm Hill City has seen in the last 12 months

Composite score · 1.0 / 10
Storm severity score

Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.

1.0 /10
Peak hail signal
13 /100

Largest radar-indicated size — a signal of damage potential, not confirmation.

Homes exposed
10 /100

How many homes sit inside the storm's footprint.

Ground truth
0 /100

Independent storm reports filed with the NWS.

Evidence / storm surfaces

How Hill City saw the hail — from two instruments

Jun 21, 2026 · Hill City, SD

Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.

Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Hill City, SD on Jun 21, 2026 Estimated size field

Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.

Max size 0.5"

Only the radar-estimated size surface resolved for Jun 21, 2026 — this storm produced no NEXRAD point detections over Hill City, so there is one map to show, not two.

The storm in context

Where Jun 21, 2026 sits in Hill City's hail record.

This was Hill City's 5th recorded hail day, arriving 15 days after the Jun 6, 2026 storm. By severity it ranks 14th of the 15 storms we have logged here. Radar put the day's largest stone over Hill City at 0.5" — radar-estimated size aloft.

The Jun 21, 2026 convective day was bigger than Hill City: the same system put hail over 415 other tracked cities, 2 of them in South Dakota. Nearest: Pringle (28 miles south, up to 0.5"); Hot Springs (46 miles south, up to 0.5"); Chadron (86 miles south, up to 1.5").

These maps are stills. In the app this date is one of 15 Hill City 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

No 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.

No ground reports were filed with the National Weather Service for this storm over Hill City. 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.

Below the severe threshold

What 0.5" hail means for Hill City roofs.

Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

2 homes × $12,000 avg. claim

Potential roof exposure

$24K

Potential roof exposure — 2 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Claim window

June 2028

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.

Names and phones for every home in the footprint: at most $0 on top of the $150 plan.

Hill City hail history

15 recorded storm days in Hill City, SD
Radar-estimated hail-size map of the storm over Hill City, SD on Aug 27, 2026 Estimated-size surface
Storm date Hill City / SD

Aug 27, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Aug 11, 2026 Estimated-size surface
Storm date Hill City / SD

Aug 11, 2026

1.75"
Estimated 1.75"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Aug 10, 2026 Estimated-size surface
Storm date Hill City / SD

Aug 10, 2026

2"
Estimated 2"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jul 31, 2026 Estimated-size surface
Storm date Hill City / SD

Jul 31, 2026

1"
Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jul 10, 2026 Estimated-size surface
Storm date Hill City / SD

Jul 10, 2026

0.75"
Signatures 0.75" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jul 9, 2026 Estimated-size surface
Storm date Hill City / SD

Jul 9, 2026

1"
Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jul 8, 2026 Estimated-size surface
Storm date Hill City / SD

Jul 8, 2026

1.25"
Signatures 1.25" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jul 3, 2026 Estimated-size surface
Storm date Hill City / SD

Jul 3, 2026

3"
Signatures 3" Estimated 2.25"
5 ground reports Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jul 2, 2026 Estimated-size surface
Storm date Hill City / SD

Jul 2, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jun 26, 2026 Estimated-size surface
Storm date Hill City / SD

Jun 26, 2026

1.75"
Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jun 6, 2026 Estimated-size surface
Storm date Hill City / SD

Jun 6, 2026

1"
Signatures 1" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on Jun 4, 2026 Estimated-size surface
Storm date Hill City / SD

Jun 4, 2026

2"
Signatures 2" Estimated 1.25"
2 ground reports Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on May 30, 2026 Estimated-size surface
Storm date Hill City / SD

May 30, 2026

1.75"
Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Hill City, SD on May 3, 2026 Estimated-size surface
Storm date Hill City / SD

May 3, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →

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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 Aug 28, 2026.