Hail History

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Hail history for Brown County, SD

Last hail in the countyAug 30, 20261.5 in (ping pong ball)
Hail days, last 12 months3
Largest hail since 20064.25 inJul 17, 2010
Hail days since 200686
Days with hail 1 inch or larger71
Tornadoes in the county11
Damaging wind reports in the county274

237 hail reports in Brown County since 2006 on 86 days. The largest stones measured 4.25 in on Jul 17, 2010.

Cities in Brown County

Recent hail in Brown County

DateHail sizeWhereSource
Aug 30, 20261.5 in
ping pong ball		Verdon
1 hail report		NWS storm report (preliminary)
Jul 24, 20262 in
hen egg		Westport, Columbia
6 hail reports		NWS storm report (preliminary)
Jun 29, 20261 in
quarter		Groton
1 hail report		NOAA Storm Events
Aug 5, 20251.5 in
ping pong ball		Winship
2 hail reports		NOAA Storm Events
Jul 15, 20250.75 in
penny		Aberdeen
2 hail reports		NOAA Storm Events
Jul 14, 20250.75 in
penny		Winship
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 Brown County by year

606407508609510511512313214615316417318219420421622223524325326

When hail season peaks in Brown County

JanFebMar6Apr9May23Jun20Jul23Aug4Sep1OctNovDec

Damaging thunderstorm winds in Brown County

274 reports of damaging thunderstorm wind in Brown County since 2006, on 117 days. The strongest measured gust was 120 mph on Jun 14, 2022.

DateStrongest gustWhereSource
Aug 24, 202663 mph, measuredWestport
1 wind report		NWS storm report (preliminary)
Jul 25, 202672 mph, measuredGroton, Richmond Lake Rec A, Claremont
6 wind reports		NWS storm report (preliminary)
Jul 24, 202660 mph, estimatedHutterville Colon, Barnard
2 wind reports		NWS storm report (preliminary)
Jul 7, 202674 mph, measuredBarnard, Mina, Claremont
11 wind reports		NWS storm report (preliminary)
Jun 29, 202664 mph, measuredStratford
1 wind report		NOAA Storm Events
Jun 28, 202675 mph, measuredAberdeen, Groton Muni Airport
2 wind reports		NOAA Storm Events
Jun 15, 202660 mph, estimatedGroton
1 wind report		NOAA Storm Events
Jun 9, 202678 mph, measuredRichmond, Aberdeen, Aberdeen Rgnl Airport
10 wind reports		NOAA Storm Events
Jun 3, 202684 mph, measuredFrederick, Hecla
3 wind reports		NOAA Storm Events
Sep 9, 202560 mph, estimatedRudolph
1 wind report		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 Brown 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).