Hail history in Union County, SD
Hail of 1 inch or larger was reported in Union County on 5 days between Jan 1, 2025 and Oct 26, 2026. The largest was 1.75 in (golf ball) on Jun 2, 2025, near 3 NNW Elk Point.
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Every hail day in Union County
| Storm day | Largest hail | Reports | Near | |
|---|---|---|---|---|
| Oct 8, 2026 | 1.50 in (ping pong ball) | 2 | Alcester | Report for this date → |
| May 31, 2026 | 1.00 in (quarter) | 1 | 10 S Alcester | Report for this date → |
| Jun 14, 2025 | 1.25 in (half dollar) | 1 | 8 ENE Vermillion | Report for this date → |
| Jun 2, 2025 | 1.75 in (golf ball) | 2 | 3 NNW Elk Point | Report for this date → |
| Apr 17, 2025 | 1.00 in (quarter) | 1 | 7 NW Elk Point | Report for this date → |
When hail falls in Union County
Where hail was reported
Places named in the reports, given as distance and direction from the nearest town, as the National Weather Service logs them.
- 10 S Alcester1 report
- 3 NNW Elk Point1 report
- 7 NW Elk Point1 report
- 8 ENE Vermillion1 report
- 8 S Alcester1 report
- Alcester1 report
- Elk Point1 report
More hail history in South Dakota
See a sample satellite hail report →
Source and method
NOAA Storm Prediction Center preliminary local storm reports of hail 1 inch or larger, Jan 1, 2025 to Oct 26, 2026 (updated Oct 27, 2026). Dates are SPC storm days, which run from 12:00 UTC to 12:00 UTC (about 7 a.m. to 7 a.m. Central), so a late-night storm appears on the day it started. Reports come from spotters, the public and NWS offices: they can be revised, and a storm nobody reported is missing. SPC storm reports.
A Skybridge report goes further for one address and date: GOES satellite cloud-top and lightning data, NOAA MRMS radar hail size and these storm reports within 50 km, in one document reviewed by a person, with a code anyone can verify.