Jefferson Parish surrounds New Orleans on three sides and shares its extreme hurricane vulnerability. Much of the parish sits at or below sea level. Hurricane Ida made direct landfall in nearby Lafourche Parish in 2021 and caused catastrophic wind damage and storm surge flooding across Jefferson. The parish has experienced more federally declared disasters per square mile than almost any other county in the United States.
// Risk Intelligence
| Threat Score | 9 / 10 Critical Risk |
| Primary Hazard | Hurricane / Storm Surge |
| Secondary Hazard | Flooding |
| FEMA Flood Zone | Zone VE (Critical Risk) |
| Federally Declared Disasters | 70 |
| Last Major Event | Hurricane Ida (2021) |
| Event Frequency | Major event every 2–3 years |
// Emergency Operations
| Emergency Mgmt Phone | (504) 349-5360 |
| Emergency Shelters | 38 designated facilities |
| Evacuation Routes | I-10 West, I-10 East, US-90 West, LA-3127 (Westbank Expressway) |
// Recommended Preparedness Gear
Based on Jefferson Parish LA's primary hazard profile (Hurricane / Storm Surge), the following gear is recommended for a Critical risk area.
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// County Profile
| County | Jefferson Parish LA |
| State | Louisiana (LA) |
| Population | 432493 |
| Area | 664 sq miles |
| FEMA Region | Zone VE (Critical Risk) |