Hail size 1.25"
1 NNE Brownsville Lawrence County
“Mixed hail sizes up to half-dollar size. (UNR)”
— NOAA / SPC storm report
/ Storm field report · Pennington
Hail in Deadwood · Aug 18, 2026
Hit 25 days ago
The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Deadwood that day. At 2" — tennis ball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Peak hail signal 2" ≈ tennis ball · radar-estimated size aloft
Homes in the hail footprint 1,076
Ground reports 1 1 hail
Radar surfaces 1 Estimated size only
Convective day · Aug 18, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Deadwood has seen in the last 12 months
Composite score · 4.8 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.8 /10
- Peak hail signal
- 50 /100
- Homes exposed
- 61 /100
- Ground truth
- 17 /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 Deadwood saw the hail — from two instruments
Aug 18, 2026 · Deadwood, 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.
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
2"
Only the radar-estimated size surface resolved for Aug 18, 2026 — this storm produced no NEXRAD point detections over Deadwood, so there is one map to show, not two.
The storm in context
Where Aug 18, 2026 sits in Deadwood's hail record.
This was Deadwood's 16th recorded hail day, arriving 2 days after the Aug 16, 2026 storm. By severity it ranks 2nd of the 17 storms we have logged here. Radar put the day's largest stone over Deadwood at 2" — radar-estimated size aloft.
The Aug 18, 2026 convective day was bigger than Deadwood: the same system put hail over 309 other tracked cities, 8 of them in South Dakota. Nearest: Rapid City (5 miles east, up to 1.5"); Hermosa (24 miles southeast, up to 1.25"); White River (144 miles east, up to 0.5").
These maps are stills. In the app this date is one of 17 Deadwood 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
1 report 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
1 reportStorm 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.
Reports came from Brownsville — beyond Deadwood itself.
Severe hail signal
What 2" hail means for Deadwood 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.
1,076 homes × $12,000 avg. claim
Potential roof exposure
$13M
Potential roof exposure — 1,076 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 5 jobs
- Illustrative work
- ~$75K
Close just 0.5% of the 1,076 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
August 2028
Claims from this storm can typically be filed until around August 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 $226 on top of the $150 plan.
Deadwood hail history
Other storms in Deadwood.
17 recorded storm days in Deadwood, SD
Estimated-size surface Storm date Deadwood / SD
Aug 23, 2026
2.25" Estimated 2.25"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Aug 16, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Aug 11, 2026
2" Estimated 2"
1 ground report Open report →
Estimated-size surface Storm date Deadwood / SD
Aug 10, 2026
2" Estimated 2"
1 ground report Open report →
Estimated-size surface Storm date Deadwood / SD
Jul 29, 2026
0.75" Signatures 0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jul 9, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jul 8, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jul 7, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jul 3, 2026
1.5" Signatures 1.5" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jun 26, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jun 22, 2026
2.25" Estimated 2.25"
4 ground reports Open report →
Estimated-size surface Storm date Deadwood / SD
Jun 6, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
Jun 4, 2026
0.5" Signatures 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
May 30, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
May 21, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Deadwood / SD
May 3, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
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 24, 2026.