Hail size 1.25"
3 WNW Dwtn Spearfish Lawrence County
“Fell along Hillsview Rd about 3 miles west of Main St. Photo and report submitted via social media. Time estimated based on radar. (UNR)”
— NOAA / SPC storm report
/ Storm field report · Butte
Hail in Spearfish · Jul 3, 2026
NEXRAD logged 5 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 546
Ground reports 7 7 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jul 3, 2026 · noon–noon UTC
Severity
The most severe storm Spearfish has seen in the last 12 months
Composite score · 4.7 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.7 /10
- Peak hail signal
- 31 /100
- Homes exposed
- 55 /100
- Ground truth
- 100 /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 Spearfish saw the hail — from two instruments
Jul 3, 2026 · Spearfish, 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
1.25"
Detections
5
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"
The storm in context
Where Jul 3, 2026 sits in Spearfish's hail record.
This was Spearfish's 7th recorded hail day, arriving 2 days after the Jul 1, 2026 storm. By severity it ranks 1st of the 8 storms we have logged here. Radar put the day's largest stone over Spearfish at 1.25" — the largest NEXRAD radar signature.
The Jul 3, 2026 convective day was bigger than Spearfish: the same system put hail over 1,885 other tracked cities, 32 of them in South Dakota. Nearest: Belle Fourche (13 miles northwest, up to 1.5"); Belle Fourche (24 miles north, up to 1.5"); Newell (26 miles east, up to 1.5").
These maps are stills. In the app this date is one of 8 Spearfish 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
7 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
7 reports Hail size 1.5"
2 WNW Dwtn Spearfish Lawrence County
“(UNR)”
— NOAA / SPC storm report
Hail size 1"
Dwtn Spearfish Lawrence County
“mPING report (UNR)”
— NOAA / SPC storm report
Hail size 1.25"
Dwtn Spearfish Lawrence County
“Photo of multiple 1-1.25 inch hailstones submitted via Facebook. (UNR)”
— NOAA / SPC storm report
Hail size 1"
Dwtn Spearfish Lawrence County
“Reported on the northwest side of Spearfish (UNR)”
— NOAA / SPC storm report
Hail size 1"
1 N Dwtn Spearfish Lawrence County
“Picture showed several quarter-to-dime sized hailstones. Photo submitted via Facebook comment. (UNR)”
— NOAA / SPC storm report
Hail size 1.25"
2 NW Dwtn Spearfish Lawrence County
“Fell along Upper Valley Rd. Vehicles reported dented. Time estimated based on radar. (UNR)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Hail was reported over 11 minutes, from to .
Reports came from Dwtn Spearfish — beyond Spearfish itself.
Damage-capable hail signal
What 1.25" hail means for Spearfish 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.
546 homes × $12,000 avg. claim
Potential roof exposure
$6.6M
Potential roof exposure — 546 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 3 jobs
- Illustrative work
- ~$45K
Close just 0.5% of the 546 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 $115 on top of the $150 plan.
Spearfish hail history
Other storms in Spearfish.
8 recorded storm days in Spearfish, SD
Estimated-size surface Storm date Spearfish / SD
Jul 30, 2026
1.5" Signatures 1.5" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Spearfish / SD
Jul 1, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Spearfish / SD
Jun 26, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Spearfish / SD
Jun 4, 2026
0.75" Signatures 0.75" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Spearfish / SD
Jun 2, 2026
1" Signatures 1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Spearfish / SD
Jun 1, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Spearfish / SD
May 30, 2026
1.25" Signatures 1.25" Estimated 1"
No ground reports filed 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 Aug 3, 2026.