Hail size 3.5"
11 W Hot Springs Fall River County
“Measured with a ruler at the intersection of US-18 and Highway 89. Time estimated based on report and radar. (UNR)”
— NOAA / SPC storm report
/ Storm field report · Fall River
Hail in Hot Springs · Aug 12, 2026
Hit 33 days ago
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 2.75" aloft. At 2.75" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Peak hail signal 2.75" ≈ baseball · radar-estimated size aloft
Homes in the hail footprint 2,407
Ground reports 5 3 hail · 2 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Aug 12, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Hot Springs has seen in the last 12 months
Composite score · 7.1 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
7.1 /10
- Peak hail signal
- 69 /100
- Homes exposed
- 68 /100
- Ground truth
- 83 /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 Hot Springs saw the hail — from two instruments
Aug 12, 2026 · Hot Springs, SD
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.
NEXRAD radar signatures Surface resolved
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Max size
0"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field 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.
Max size
2.75"
The storm in context
Where Aug 12, 2026 sits in Hot Springs's hail record.
This was Hot Springs's 15th recorded hail day, arriving 12 days after the Jul 31, 2026 storm. By severity it ranks 3rd of the 18 storms we have logged here. Radar put the day's largest stone over Hot Springs at 2.75" — radar-estimated size aloft.
The Aug 12, 2026 convective day was bigger than Hot Springs: the same system put hail over 507 other tracked cities, 11 of them in South Dakota. Nearest: Oelrichs (18 miles southeast, up to 2.5"); Pringle (18 miles north, up to 0.5"); Edgemont (20 miles southwest, up to 2.75").
These maps are stills. In the app this date is one of 18 Hot Springs 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
5 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
3 reports Hail size 1"
Hot Springs Fall River County
“Time estimated based on radar. (UNR)”
— NOAA / SPC storm report
Hail size 2"
3 W Hot Springs Fall River County
“Video received showing at least 2 inch hail along Highway 18. Time estimated based on report and radar. (UNR)”
— NOAA / SPC storm report
Wind reports
2 reports Wind gust 60 mph
11 W Hot Springs Fall River County
“(UNR)”
— NOAA / SPC storm report
Wind gust 60 mph
11 W Hot Springs Fall River County
“(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 28 minutes, from to .
Severe hail signal
What 2.75" hail means for Hot Springs 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.
2,407 homes × $12,000 avg. claim
Potential roof exposure
$29M
Potential roof exposure — 2,407 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 12 jobs
- Illustrative work
- ~$180K
Close just 0.5% of the 2,407 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 $505 on top of the $150 plan.
Hot Springs hail history
Other storms in Hot Springs.
18 recorded storm days in Hot Springs, SD
Estimated-size surface Storm date Hot Springs / SD
Sep 6, 2026
0.75" Estimated 0.75"
2 ground reports Open report →
Estimated-size surface Storm date Hot Springs / SD
Aug 27, 2026
1.75" Estimated 1.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Aug 21, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jul 31, 2026
4" Signatures 4" Estimated 2"
6 ground reports Open report →
Estimated-size surface Storm date Hot Springs / SD
Jul 28, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jul 7, 2026
4" Signatures 4" Estimated 2.75"
1 ground report Open report →
Estimated-size surface Storm date Hot Springs / SD
Jul 6, 2026
2.5" Signatures 2.5" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jul 3, 2026
2.25" Signatures 2.25" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 28, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 27, 2026
2" Signatures 2" Estimated 1.25"
1 ground report Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 26, 2026
1.75" Signatures 1.75" Estimated 1.25"
2 ground reports Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 22, 2026
1" Estimated 1"
1 ground report Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 21, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 6, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 4, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
Jun 2, 2026
1.25" Signatures 1.25" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hot Springs / SD
May 30, 2026
2" Signatures 2" Estimated 1"
No ground reports filed Open report →
Take your next area into the field.
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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.