Buffalo County SD in South Dakota faces tornado / blizzard risk across its 476 square mile area. Gann Valley serves this small south-central South Dakota county. Buffalo 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.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
* We may earn a commission from qualifying purchases.
// Risk Intelligence
| Threat Score | 5 / 10 Low Risk |
| Primary Hazard | Tornado / Blizzard |
| Secondary Hazard | Flash Flooding |
| FEMA Flood Zone | Low |
| Federally Declared Disasters | 6 |
| Last Major Event | 2019 Blizzard |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (605) 293-3217 |
| Emergency Shelters | 2 designated facilities |
| Evacuation Routes | State and US highways |
// County Profile
| County | Buffalo County SD |
| State | South Dakota (SD) |
| Population | 2 |
| Area | 476 sq miles |
| FEMA Region | Low |
// Other South Dakota Counties
Hand County SD
Tornado / Blizzard
6/10
Moderate
Brule County SD
Tornado / Blizzard
6/10
Moderate
Lyman County SD
Tornado / Blizzard
6/10
Moderate
Deuel County SD
Tornado / Blizzard
6/10
Moderate
Spink County SD
Blizzard / Flash Flooding
6/10
Moderate
Minnehaha County SD
Tornado / Severe Storm
6/10
Moderate