Natural Disaster Risk in Saint Charles

Natural Hazard Profile: Saint Charles, South Dakota

Located in the interior eastern United States in Gregory County, Saint Charles is a small unincorporated community. The semi-arid continental climate that characterizes this part of South Dakota — marked by harsh winters, hot summers, and significant seasonal variation — directly influences the types and severity of natural hazards present, making Saint Charles a community where hazard awareness has real practical value.

FEMA rates Saint Charles's composite natural disaster risk at 4.7 out of 10 — moderate risk. Arctic air outbreaks are the leading natural hazard, with temperature plunges to dangerous lows capable of causing hypothermia and widespread infrastructure failures. Residents should also account for wildfire and winter risk in their preparedness planning.

Relative to other U.S. communities, Saint Charles's natural disaster risk is near the U.S. national average of 4.5/10, near the 4.9/10 state average. The hazard distribution here is led by cold wave and wildfire, as measured by FEMA across Gregory County. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

With a moderate risk rating, Saint Charles residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for cold wave is recommended.