Trigg County Disaster Risk

Trigg County has a FEMA National Risk Index rating of Relatively Low, placing it in the 48th 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.

Trigg County is evaluated for five major natural hazard types: earthquake (85th percentile), tornado (70th percentile), flooding (49th percentile), hurricane (24th percentile), wildfire (13th percentile). The highest-risk hazard is earthquake at the 85th 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.

Trigg County's composite risk percentile is 48th, compared to the Kentucky state average of 44th percentile. The state's overall risk rating is Relatively Low. This means Trigg County faces higher natural disaster risk than the typical county in Kentucky.

Yes, Trigg County's earthquake risk is at the 85th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Trigg County is at the 49th percentile.

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.

Trigg County's composite risk score of 48th percentile is above the Kentucky state average of 44th percentile. This elevated risk is driven by earthquake exposure (85th percentile), along with tornado risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.