St. Martin Parish Disaster Risk

St. Martin Parish has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 87th 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.

St. Martin Parish is evaluated for five major natural hazard types: hurricane (96th percentile), tornado (90th percentile), flooding (87th percentile), earthquake (44th percentile), wildfire (25th percentile). The highest-risk hazard is hurricane at the 96th 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.

St. Martin Parish's composite risk percentile is 87th, compared to the Louisiana state average of 62th percentile. The state's overall risk rating is Relatively Low. This means St. Martin Parish faces higher natural disaster risk than the typical county in Louisiana.

Yes, St. Martin Parish's hurricane risk is at the 96th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, St. Martin Parish is at the 87th 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.

St. Martin Parish's composite risk score of 87th percentile is above the Louisiana state average of 62th percentile. This elevated risk is driven by hurricane exposure (96th percentile), along with tornado and flooding risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.