Moderate Risk South Dakota  ·  Blizzard / Flash Flooding

Day County SD

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

6/ 10
Threat Score
Population
5
Area
1,021
sq miles
Primary Hazard
Blizzard / Flash Flooding
FEMA Disasters
7
federally declared

Day County SD in South Dakota faces blizzard / flash flooding risk across its 1,021 square mile area. Webster serves this northeast South Dakota county near the Minnesota border. Day 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 Blizzard / Flash Flooding
Secondary Hazard Tornado
FEMA Flood Zone Moderate
Federally Declared Disasters 7
Last Major Event 2019 Flooding
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (605) 345-9500
Emergency Shelters 3 designated facilities
Evacuation Routes State and US highways

// County Profile

County Day County SD
State South Dakota (SD)
Population 5
Area 1,021 sq miles
FEMA Region Moderate

// Other South Dakota Counties