City of Irvine
2020 Local Hazard Mitigation Plan
Table 3-3: Hazard Scores and Threat Level
Impact
Hazard Planning Consideration
Hazard Type*
Probability
Total Score
Primary Impact
Secondary Impacts
Location
Seismic Hazards 1
4
4
4
4
64.00
High
Wildfire
4
3
3
3
48.00
High
Drought
3
4
4
4
48.00
High
Diseases and Pests 2
4
4
2
2
44.80
High
Severe Weather 3
3
4
2
2
33.60
Medium
Aircraft Incident
3
2
2
2
24.00
Medium
Human Caused Hazards 4
2
2
3
4
22.80
Medium
Geologic Hazards 5
2
2
3
3
20.80
Medium
Flooding 6
2
3
2
2
19.20
Medium
Haz Mat Release
2
3
2
2
19.20
Medium
Dam Failure
2
2
3
2
18.80
Medium
* Climate Change considerations discussed as appropriate within this hazard. 1 Seismic Hazards includes: Fault Rupture, Seismic Shaking, Liquefaction 2 Diseases Pests includes: Agricultural Pests, Epidemic/Vector-Borne Diseases, and Tree Mortality 3 Severe Weather includes: Extreme Heat, Severe Wind, Rain 4 Human-Caused Hazards includes: Mass-Casualty Incidents (Terrorism), Civil Disturbance, Cyber Threats, and Transportation Accidents, Infrastructure Failure 5 Geologic Hazards includes: Expansive Soils, Landslides, Methane Containing Soils, and Subsidence 6 Flooding includes a discussion regarding sea level rise
H AZARD P ROFILES
Aircraft Incident
Description
An aircraft incident refers to when an airborne vehicle, such as an airplane, helicopter, or airship, experiences failure to the degree that people on the ground are endangered by the aircraft. This could be the result of human error, inclement weather, deferred maintenance, design flaw, equipment failure, or, in a worst-case scenario, a collision.
Location and Extent
Irvine itself has no airports within its boundaries, but numerous regional and international airports are in the City’s surroundings , and the airways above the City are highly trafficked. The following are airports near Irvine that create air traffic, to include their distance from Irvine’s City Center: • John Wayne Airport (SNA), 4.3 miles, located between the cities of Costa Mesa, Irvine, and Newport Beach. • Fullerton Municipal Airport (FMA), 19.7 miles • Long Beach Municipal Airport (LGB), 22.9 miles
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