Moderate Risk South Dakota  ·  Tornado / Blizzard

Yankton County SD

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

6/ 10
Threat Score
Population
22
Area
522
sq miles
Primary Hazard
Tornado / Blizzard
FEMA Disasters
7
federally declared

Yankton County SD in South Dakota faces tornado / blizzard risk across its 522 square mile area. Yankton on the Missouri River serves this southeast South Dakota county. Yankton serves as the county seat and regional emergency coordination hub.

// Preparedness Recommendations

  • Identify an interior room or storm shelter.
  • Monitor NOAA weather alerts continuously.
  • Keep emergency kit accessible at all times.
  • Prepare for sudden power outages.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 6 / 10    Moderate Risk
Primary Hazard Tornado / Blizzard
Secondary Hazard Red River Flooding
FEMA Flood Zone Moderate
Federally Declared Disasters 7
Last Major Event 2019 Missouri River Flooding
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (605) 668-3485
Emergency Shelters 3 designated facilities
Evacuation Routes State and US highways

// County Profile

County Yankton County SD
State South Dakota (SD)
Population 22
Area 522 sq miles
FEMA Region Moderate

// Major Cities

Yankton SD

// Cities in This County

// Other South Dakota Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

🌊
Gavins Point Dam SD NE
Major Dam  ·  Yankton, SD  ·  US Army Corps of Engineers  ·  30-mi risk zone
7/10 High

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.