High Risk California  ·  Wildfire / Earthquake

Orange County CA

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

7/ 10
Threat Score
Population
3,186,989
Area
948
sq miles
Primary Hazard
Wildfire / Earthquake
FEMA Disasters
45
federally declared

Orange County sits between the Santa Ana Mountains and the Pacific Ocean, creating wildfire corridors that have produced some of Southern California's most destructive fires. The 2007 Santiago Fire burned over 28,000 acres. Coastal areas face tsunami risk from Pacific subduction zone events, and the county sits near multiple active fault systems.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 7 / 10    High Risk
Primary Hazard Wildfire / Earthquake
Secondary Hazard Tsunami
FEMA Flood Zone Zone X (Seismic High Risk)
Federally Declared Disasters 45
Last Major Event Santiago Fire (2007)
Event Frequency Major event every 4–5 years

// Emergency Operations

Emergency Mgmt Phone (714) 628-7085
Emergency Shelters 58 designated facilities
Evacuation Routes I-5 North, I-405 North, SR-55 North, SR-91 East

// County Profile

County Orange County CA
State California (CA)
Population 3,186,989
Area 948 sq miles
FEMA Region Zone X (Seismic High Risk)

// Major Cities

San Clemente CA Westminster CA Lake Forest CA Newport Beach CA Tustin CA Santa Ana CA Huntington Beach CA Garden Grove CA Fullerton CA Orange CA

// Cities in This County

// Other California Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

🌊
Santa Ana River Levee System CA
Major Dam  ·  Anaheim, CA  ·  US Army Corps of Engineers  ·  10-mi risk zone
9/10 High
💧
Metropolitan Water District of Southern California CA
Water Treatment  ·  Los Angeles, CA  ·  Metropolitan Water District  ·  100-mi risk zone
8/10 High
San Onofre Spent Fuel Storage CA
Nuclear Power Plant  ·  San Clemente, CA  ·  Southern California Edison  ·  2-mi risk zone
8/10 High
McColl Superfund Site CA
Superfund Site  ·  Fullerton, CA  ·  Various / EPA  ·  5-mi risk zone
7/10 High
Naval Weapons Station Seal Beach Superfund CA
Superfund Site  ·  Seal Beach, CA  ·  US Navy / EPA  ·  5-mi risk zone
7/10 High
🏟
Angel Stadium Anaheim CA
Stadium / Arena  ·  Anaheim, CA  ·  Los Angeles Angels / MLB  ·  2-mi risk zone
7/10 High
Marine Corps Base Camp Pendleton CA
Military Installation  ·  Oceanside, CA  ·  US Marine Corps  ·  10-mi risk zone
7/10 High

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.