Wind gust 62 mph
3 W Union Center Meade County
“(UNR)”
— NOAA / SPC storm report
/ Storm field report · Meade
Hail in Union Center · Jul 29, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0.5" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 0.5" ≈ pea to penny · radar-estimated size aloft
Homes in the hail footprint 0
Ground reports 1 1 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jul 29, 2026 · noon–noon UTC
Severity
The 9th most severe storm Union Center has seen in the last 12 months
Composite score · 1.0 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
1.0 /10
- Peak hail signal
- 13 /100
- Homes exposed
- 0 /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 Union Center saw the hail — from two instruments
Jul 29, 2026 · Union Center, SD
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Max size
0"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
0.5"
The storm in context
Where Jul 29, 2026 sits in Union Center's hail record.
This was Union Center's 7th recorded hail day, arriving 26 days after the Jul 3, 2026 storm. By severity it ranks 9th of the 9 storms we have logged here. Radar put the day's largest stone over Union Center at 0.5" — radar-estimated size aloft.
The Jul 29, 2026 convective day was bigger than Union Center: the same system put hail over 359 other tracked cities, 30 of them in South Dakota. Nearest: Red Owl (16 miles northeast, up to 0.5"); Box Elder (27 miles southwest, up to 0.5"); New Underwood (28 miles south, up to 0.75").
These maps are stills. In the app this date is one of 9 Union Center 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.
Wind reports
1 reportBelow the severe threshold
What 0.5" hail means for Union Center roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Union Center hail history
Other storms in Union Center.
9 recorded storm days in Union Center, SD
Estimated-size surface Storm date Union Center / SD
Aug 11, 2026
4" Estimated 4"
3 ground reports Open report →
Estimated-size surface Storm date Union Center / SD
Jul 30, 2026
1.75" Signatures 1.75" Estimated 0.75"
1 ground report Open report →
Estimated-size surface Storm date Union Center / SD
Jul 3, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Union Center / SD
Jul 2, 2026
3.75" Signatures 3.75" Estimated 2"
3 ground reports Open report →
Estimated-size surface Storm date Union Center / SD
Jun 27, 2026
1.5" Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Union Center / SD
Jun 26, 2026
1.75" Signatures 1.75" Estimated 1"
5 ground reports Open report →
Estimated-size surface Storm date Union Center / SD
Jun 7, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Union Center / SD
May 21, 2026
1" Estimated 1"
No ground reports filed Open report →
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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 12, 2026.