Lyon County Disaster Risk

Lyon County has a FEMA National Risk Index rating of Relatively Low, placing it in the 43th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.

Lyon County is evaluated for five major natural hazard types: flooding (57th percentile), tornado (41th percentile), wildfire (17th percentile), earthquake (16th percentile). The highest-risk hazard is flooding at the 57th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.

Lyon County's composite risk percentile is 43th, compared to the Minnesota state average of 42th percentile. The state's overall risk rating is Very Low. This means Lyon County faces higher natural disaster risk than the typical county in Minnesota.

Yes, Lyon County's flooding risk is at the 57th percentile nationally. This is above the national median.

FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.

Lyon County's composite risk score of 43th percentile is above the Minnesota state average of 42th percentile. This elevated risk is driven by flooding exposure (57th percentile). Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.