Moderate Risk South Dakota  ·  Tornado / Flash Flooding

Custer County SD

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

6/ 10
Threat Score
Population
8
Area
1,557
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
7
federally declared

Custer County SD in South Dakota faces tornado / flash flooding risk across its 1,557 square mile area. Custer in the Black Hills hosts Wind Cave National Park and Crazy Horse Memorial. Custer serves as the county seat and regional emergency coordination hub.

// Preparedness Recommendations

  • Evacuation routes inland should be identified in advance.
  • Store at least 72 hours of food and water.
  • Elevate critical belongings above flood level.
  • Have backup power ready in case of grid failure.

// 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 / Flash Flooding
Secondary Hazard Blizzard
FEMA Flood Zone Moderate
Federally Declared Disasters 7
Last Major Event 2012 Jasper Fire
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (605) 673-8174
Emergency Shelters 3 designated facilities
Evacuation Routes State and US highways

// County Profile

County Custer County SD
State South Dakota (SD)
Population 8
Area 1,557 sq miles
FEMA Region Moderate

// Major Cities

Custer SD

// Cities in This County

// Other South Dakota Counties