Natural Hazard Risk in Louisiana
The risk score (0–100) combines expected annual loss from 18 natural hazards with social vulnerability and community resilience. Higher = greater relative risk. Scores compare counties across the United States.
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🏛️ Federal disaster declarations (last 2 years)
Tropical Storm · Designated areas: St. Tammany (Parish), Terrebonne (Parish), Avoyelles (Parish), St. Landry (Parish)
Winter Storm · Designated areas: Catahoula (Parish), Caldwell (Parish), Richland (Parish), Tensas (Parish), West Carroll (Parish), Red River (Parish), Winn (Parish), Webster (Parish), Bienville (Parish), De Soto (Parish), East Carroll (Parish), Franklin (Parish)…
Winter Storm · Designated areas: Grant (Parish), Iberia (Parish), Iberville (Parish), Jackson (Parish), Jefferson (Parish), Jefferson Davis (Parish), Lafayette (Parish), Lafourche (Parish), La Salle (Parish), Lincoln (Parish), Livingston (Parish), Madison (Parish)…
Hurricane · Designated areas: St. Tammany (Parish), East Baton Rouge (Parish), East Feliciana (Parish), Iberville (Parish), Livingston (Parish), Orleans (Parish), Plaquemines (Parish), St. Bernard (Parish), St. Helena (Parish), St. Martin (Parish), Tangipahoa (Parish), Washington (Parish)…
Hurricane · Designated areas: Calcasieu (Parish), Caldwell (Parish), Cameron (Parish), Catahoula (Parish), Claiborne (Parish), Concordia (Parish), De Soto (Parish), East Baton Rouge (Parish), East Carroll (Parish), East Feliciana (Parish), Evangeline (Parish), Franklin (Parish)…
Major disaster (DR) and emergency (EM) declarations unlock federal assistance for the designated areas. Source: FEMA / OpenFEMA.
Other states
Data: FEMA National Risk Index (updated ~annually). AlertAtlas is not an official warning service — always follow local authorities.