South Dakota Tornadoes
South Dakota averages 33 tornadoes per year. History includes multiple violent events and photogenic tornadoes across the state's varied terrain.
South Dakota Tornado Statistics
- Average tornadoes per year: ~33
- Peak season: May-July
- Historical F5: Roberts County 1957 (rare)
- Storm chase destination: Highly popular
Notable South Dakota Tornado Events
June 1957 Roberts County F5
Rare South Dakota F5. Struck rural Roberts County. Historical significance.
May 5, 2007 Central South Dakota Outbreak
Multiple significant tornadoes across the state.
Multiple Storm Chase Events
South Dakota is famous for photogenic tornadoes captured by storm chasers throughout the years.
Why South Dakota?
Great Plains Position
Central Great Plains location. Traditional Tornado Alley influence.
Open Terrain
Flat, wide open terrain allows for extensive storm chase visibility.
Missouri River Corridor
Missouri River valley influences moisture patterns.
Multiple Weather Systems
Cold fronts, warm fronts, jet stream patterns converge over the state.
Regional South Dakota Risk
Eastern South Dakota
Sioux Falls, Brookings. Higher tornado density. Agricultural region.
Central South Dakota
Pierre, Mitchell. Missouri River valley. Historical events.
Western South Dakota
Rapid City area. Fewer tornadoes but violent when they occur.
Black Hills
Mountain terrain reduces tornado formation but does occur.
Notable South Dakota Cities
- Sioux Falls - largest city, moderate tornado risk
- Rapid City - western SD, Black Hills
- Pierre - state capital, central SD
- Aberdeen - northeast SD
- Mitchell - south-central SD
Storm Chase Culture
South Dakota is a top storm chase destination:
- Flat terrain excellent for visibility
- Wide open highways
- Photogenic supercell environments
- Multiple chase corridors
Warning Infrastructure
South Dakota has developed tornado preparedness:
- NWS Sioux Falls, Rapid City coverage
- NEXRAD radar coverage
- Community siren networks
- State emergency management
- Storm spotter networks
Living in South Dakota
- NOAA weather radio essential
- Basement is standard tornado shelter
- Family tornado plan
- Understanding of Great Plains storm season
- Community shelter awareness
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Place an EF0–EF5 tornado anywhere in the world and see modeled fatalities, structural damage, and economic loss based on real census data.
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