Wind gust 112 mph
7 NNW Joe Creek Rec Are Hughes County
“111.8 mph peak wind gust on Ambient Wx Station. (ABR)”
— NOAA / SPC storm report
/ Storm field report · Sully
Hail in Pierre · Jun 28, 2026
NEXRAD logged 3 hail signatures up to 1.75"; 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 1.75" ≈ golf ball · the largest NEXRAD radar signature
Homes in the hail footprint 1
Ground reports 3 3 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jun 28, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Pierre has seen in the last 12 months
Composite score · 3.5 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.5 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 6 /100
- Ground truth
- 50 /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 Pierre saw the hail — from two instruments
Jun 28, 2026 · Pierre, SD
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
NEXRAD radar signatures Surface resolved
Radar signature field The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Max size
1.75"
Detections
3
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Max size
1"
The storm in context
Where Jun 28, 2026 sits in Pierre's hail record.
This was Pierre's 6th recorded hail day, arriving 12 days after the Jun 16, 2026 storm. By severity it ranks 3rd of the 9 storms we have logged here. Radar put the day's largest stone over Pierre at 1.75" — the largest NEXRAD radar signature.
The Jun 28, 2026 convective day was bigger than Pierre: the same system put hail over 348 other tracked cities, 42 of them in South Dakota. Nearest: Blunt (22 miles southeast, up to 1"); Fort Pierre (23 miles southwest, up to 1.75"); Harrold (31 miles east, up to 2.5").
These maps are stills. In the app this date is one of 9 Pierre 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
3 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.
Wind reports
3 reports Wind gust 58 mph
9 ESE Rosseau Hughes County
“Mesonet station 333 De Grey Hill (SDDOT). (ABR)”
— NOAA / SPC storm report
Wind gust 65 mph
4 ESE Rosseau Hughes County
“Mesonet station PRFS2 Pierre 16 ESE (SD Mesonet). (ABR)”
— 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.
Reports came from Joe Creek Rec Are and Rosseau — beyond Pierre itself.
High damage potential
What 1.75" hail means for Pierre roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
1 homes × $12,000 avg. claim
Potential roof exposure
$12K
Potential roof exposure — 1 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
June 2028
Claims from this storm can typically be filed until around June 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 $0 on top of the $150 plan.
Pierre hail history
Other storms in Pierre.
9 recorded storm days in Pierre, SD
Estimated-size surface Storm date Pierre / SD
Sep 6, 2026
1.5" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Pierre / SD
Jul 25, 2026
3.75" Signatures 3.75" Estimated 2.25"
2 ground reports Open report →
Estimated-size surface Storm date Pierre / SD
Jul 7, 2026
1" Signatures 1"
No ground reports filed Open report →
Estimated-size surface Storm date Pierre / SD
Jun 16, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Pierre / SD
Jun 9, 2026
1.5" Estimated 1.5"
5 ground reports Open report →
Estimated-size surface Storm date Pierre / SD
Jun 4, 2026
1.75" Signatures 1.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Pierre / SD
Jun 2, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Pierre / SD
Apr 22, 2026
1" Signatures 1" Estimated 0.5"
1 ground report 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.