Hail in Deadwood May 21, 2026
The radar-estimated size surface caught this storm, reaching 0.5" aloft. NEXRAD logged no point detections over Deadwood this day.
0.5"
≈ pea to penny · radar-estimated size aloft85
0
none filedThe 9th most severe storm Deadwood has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 13 /100
- Homes exposed
- 39 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Deadwood saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for May 21, 2026 — this storm produced no NEXRAD point detections over Deadwood, so there is one map to show, not two.
Where May 21, 2026 sits in Deadwood's hail record
This was Deadwood's 2nd recorded hail day, arriving 18 days after the May 3, 2026 storm. By severity it ranks 9th of the 12 storms we have logged here. Radar put the day's largest stone over Deadwood at 0.5" — radar-estimated size aloft.
The May 21, 2026 convective day was bigger than Deadwood: the same system put hail over 120 other tracked cities, 7 of them in South Dakota. Nearest: Rapid City (7 miles south, up to 0.75"); Box Elder (25 miles east, up to 0.75"); Union Center (46 miles northeast, up to 1").
These maps are stills from Deadwood's May 21, 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.
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.
The National Weather Service logged no spotter reports for this storm over Deadwood. 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.
What 0.5" hail means for Deadwood roofs
Hail under three-quarters of an inch stays below the National Weather Service severe threshold and rarely breaks shingles outright. But repeated small-hail events accelerate granule loss and shorten roof life — on older roofs, it's still worth a conversation.
$1M
Potential roof exposure — 85 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Deadwood on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Deadwood storm history — this May 21, 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
12 recorded storm days in Deadwood, SD
Other storms in Deadwood
Jul 29, 2026
0.75"
Jul 9, 2026
1"
Jul 8, 2026
1"
Jul 7, 2026
1"
Jul 3, 2026
1.5"
Jun 26, 2026
1"
Jun 22, 2026
2.25"
Jun 6, 2026
1"
Jun 4, 2026
0.5"
May 30, 2026
1.25"
May 3, 2026
0.5"