/ Storm field report · Pennington

Hail in Rapid City · Jul 8, 2026

NEXRAD logged 10 hail signatures up to 1.25"; the estimated-size surface reached 1" aloft. Open it on the live map to see the swath over the streets.

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Peak hail signal 1.25" ≈ half-dollar · the largest NEXRAD radar signature
Homes in the hail footprint 782
Ground reports 0 none filed
Radar surfaces 2 NEXRAD + estimated size

Convective day · Jul 8, 2026 · noon–noon UTC

Severity

The 10th most severe storm Rapid City has seen in the last 12 months

Composite score · 3.3 / 10
Storm severity score

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

3.3 /10
Peak hail signal
31 /100

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

Homes exposed
58 /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 Rapid City saw the hail — from two instruments

Jul 8, 2026 · Rapid City, SD

Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.

NEXRAD radar signatures Surface resolved
NEXRAD radar-signature map of the hail storm over Rapid City, SD on Jul 8, 2026 Radar signature field

NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.

Max size 1.25" Detections 10
Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 8, 2026 Estimated size field

Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.

Max size 1"

The storm in context

Where Jul 8, 2026 sits in Rapid City's hail record.

This was Rapid City's 13th recorded hail day, arriving 1 day after the Jul 7, 2026 storm. By severity it ranks 10th of the 26 storms we have logged here. Radar put the day's largest stone over Rapid City at 1.25" — the largest NEXRAD radar signature.

The Jul 8, 2026 convective day was bigger than Rapid City: the same system put hail over 908 other tracked cities, 9 of them in South Dakota. Nearest: Deadwood (5 miles west, up to 1"); Silver City (5 miles west, up to 1"); Nemo (9 miles northwest, up to 1").

These maps are stills. In the app this date is one of 26 Rapid 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.

The National Weather Service logged no spotter reports for this storm over Rapid City. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.

Damage-capable hail signal

What 1.25" hail means for Rapid City roofs.

Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

782 homes × $12,000 avg. claim

Potential roof exposure

$9.4M

Potential roof exposure — 782 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
4 jobs
Illustrative work
~$60K

Close just 0.5% of the 782 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.

Claim window

July 2028

Claims from this storm can typically be filed until around July 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 $164 on top of the $150 plan.

Rapid City hail history

26 recorded storm days in Rapid City, SD
Radar-estimated hail-size map of the storm over Rapid City, SD on Sep 6, 2026 Estimated-size surface
Storm date Rapid City / SD

Sep 6, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 27, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 27, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 24, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 24, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 23, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 23, 2026

2.25"
Estimated 2.25"
2 ground reports Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 18, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 18, 2026

1.5"
Estimated 1.5"
6 ground reports Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 16, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 16, 2026

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

Aug 11, 2026

4"
Estimated 4"
18 ground reports Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 10, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 10, 2026

2"
Estimated 2"
2 ground reports Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Aug 9, 2026 Estimated-size surface
Storm date Rapid City / SD

Aug 9, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 30, 2026 Estimated-size surface
Storm date Rapid City / SD

Jul 30, 2026

0.75"
Signatures 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 29, 2026 Estimated-size surface
Storm date Rapid City / SD

Jul 29, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 27, 2026 Estimated-size surface
Storm date Rapid City / SD

Jul 27, 2026

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

Jul 9, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 7, 2026 Estimated-size surface
Storm date Rapid City / SD

Jul 7, 2026

1"
Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 3, 2026 Estimated-size surface
Storm date Rapid City / SD

Jul 3, 2026

3"
Signatures 3" Estimated 1.75"
2 ground reports Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jul 2, 2026 Estimated-size surface
Storm date Rapid City / SD

Jul 2, 2026

1.75"
Signatures 1.75" Estimated 1.5"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jun 26, 2026 Estimated-size surface
Storm date Rapid City / SD

Jun 26, 2026

1"
Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jun 22, 2026 Estimated-size surface
Storm date Rapid City / SD

Jun 22, 2026

1"
Estimated 1"
4 ground reports Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jun 7, 2026 Estimated-size surface
Storm date Rapid City / SD

Jun 7, 2026

0.75"
Signatures 0.5" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jun 6, 2026 Estimated-size surface
Storm date Rapid City / SD

Jun 6, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on Jun 4, 2026 Estimated-size surface
Storm date Rapid City / SD

Jun 4, 2026

1.25"
Signatures 1.25" Estimated 0.75"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on May 31, 2026 Estimated-size surface
Storm date Rapid City / SD

May 31, 2026

1.75"
Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on May 30, 2026 Estimated-size surface
Storm date Rapid City / SD

May 30, 2026

1.5"
Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on May 21, 2026 Estimated-size surface
Storm date Rapid City / SD

May 21, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Rapid City, SD on May 3, 2026 Estimated-size surface
Storm date Rapid 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 Sep 7, 2026.