Hail History

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Hail history for Sully County, SD

Last hail in the countyMay 23, 20241 in (quarter)
Hail days, last 12 monthsNone
Largest hail since 20064.25 inJun 21, 2007
Hail days since 200641
Days with hail 1 inch or larger37
Tornadoes in the county3
Damaging wind reports in the county58

75 hail reports in Sully County since 2006 on 41 days. The largest stones measured 4.25 in on Jun 21, 2007.

Recent hail in Sully County

No hail was reported in Sully County in the last two years.

Hail days in Sully County by year

70630740820910211212113314215216117518219220211221231242526

When hail season peaks in Sully County

JanFebMar1Apr5May15Jun7Jul10Aug3SepOctNovDec

Damaging thunderstorm winds in Sully County

58 reports of damaging thunderstorm wind in Sully County since 2006, on 41 days. The strongest measured gust was 124 mph on Jun 26, 2008.

DateStrongest gustWhereSource
Sep 27, 202666 mph, measuredOkobojo Creek Rec
1 wind report		NWS storm report (preliminary)
Aug 17, 202661 mph, measuredOkobojo Creek Rec, Harrold
2 wind reports		NWS storm report (preliminary)
Jul 25, 202667 mph, measuredHarrold
1 wind report		NWS storm report (preliminary)
Jun 15, 202660 mph, measuredOkobojo
1 wind report		NOAA Storm Events
Apr 22, 202664 mph, measuredGallagher
1 wind report		NOAA Storm Events
Jul 23, 202575 mph, measuredGallagher
2 wind reports		NOAA Storm Events
Jul 14, 2025100 mph, estimatedClifton, Okobojo
2 wind reports		NOAA Storm Events
Jul 9, 202563 mph, measuredOkobojo
1 wind report		NOAA Storm Events
Jun 27, 202564 mph, measuredOkobojo, Onida
2 wind reports		NOAA Storm Events
Jul 14, 202462 mph, measuredOkobojo
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 Sully 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).