Hail History

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Hail history for Union County, SD

Last hail in the countyMay 31, 20261 in (quarter)
Hail days, last 12 months2
Largest hail since 20061.75 in (golf ball)Jun 2, 2025
Hail days since 200646
Days with hail 1 inch or larger32
Tornadoes in the county3
Damaging wind reports in the county99

59 hail reports in Union County since 2006 on 46 days. The largest stones measured 1.75 in (golf ball) on Jun 2, 2025.

Cities in Union County

Recent hail in Union County

DateHail sizeWhereSource
May 31, 20261 in
quarter		Big Spgs
1 hail report		NOAA Storm Events
May 18, 20260.88 in
nickel		Elk Pt
1 hail report		NOAA Storm Events
Jun 14, 20251.25 in
half dollar		Midway, Big Spgs
2 hail reports		NOAA Storm Events
Jun 2, 20251.75 in
golf ball		Elk Pt, Junction City
3 hail reports		NOAA Storm Events
Apr 18, 20251 in
quarter		Junction City
1 hail report		NOAA Storm Events

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in Union County by year

3062074082095101111121341421511621718119120321122523324325226

When hail season peaks in Union County

JanFeb1Mar7Apr11May14Jun4Jul2Aug4Sep3OctNovDec

Damaging thunderstorm winds in Union County

99 reports of damaging thunderstorm wind in Union County since 2006, on 54 days. The strongest measured gust was 92 mph on Jun 11, 2010.

DateStrongest gustWhereSource
Sep 11, 202659 mph, measuredBeresford
1 wind report		NWS storm report (preliminary)
Sep 1, 202660 mph, measuredAlcester, Beresford, Vermillion
5 wind reports		NWS storm report (preliminary)
Jul 1, 202660 mph, estimatedHudson
1 wind report		NWS storm report (preliminary)
Jul 29, 202568 mph, measuredJefferson, Mc Cook Lake, Alsen
3 wind reports		NOAA Storm Events
Jul 28, 202581 mph, estimatedAlsen, Alcester, Jefferson
5 wind reports		NOAA Storm Events
Jul 7, 202564 mph, estimatedRichland, Elk Pt
2 wind reports		NOAA Storm Events
Jun 2, 202585 mph, estimatedJunction City, Elk Pt
3 wind reports		NOAA Storm Events
Jul 30, 202475 mph, estimatedAlcester, Alsen
2 wind reports		NOAA Storm Events
Jul 29, 202464 mph, estimatedRichland, Mc Cook Lake
3 wind reports		NOAA Storm Events
May 20, 202490 mph, estimatedJefferson
2 wind reports		NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Union County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).