City of Irvine
2020 Local Hazard Mitigation Plan
Table 3-1: Hazard Evaluation for Irvine LHMP
Hazard
Recommended for Consideration
Included in LHMP?
Reason for Inclusion or Exclusion
Severe Wind
FEMA guidance
Yes
Severe Weather includes discussions regarding extreme heat, severe wind, and rain, which are weather-related hazards that are most common in Irvine. Severe Weather includes discussions regarding extreme heat, severe wind, and rain, which are weather-related hazards that are most common in Irvine.
Severe Weather and Storms
FEMA guidance SHMP OC HMP FEMA guidance FEMA guidance
Yes
Storm Surge Subsidence
No Yes
Irvine is not a coastal community.
The HMPC believed that subsidence could occur with significant groundwater pumping. Subsidence is not discussed as a stand-alone hazard but rather is a function of the geologic hazard discussion. The HMPC was concerned about mass-casualty incidents posing a threat to public safety. A discussion of this is in the Human-Caused Hazards section. Thunderstorms that cause damage and endanger public safety are rare in the Southern California region. No tornadoes are known to have ever occurred in Irvine. Due to the presence of major freeways and roadways in and around Irvine, transportation accidents could endanger public safety. A discussion of this is in the Human-Caused Hazards section. The HMPC noted that the City’s trees are a significant asset at risk. Tree Mortality is discussed within the Diseases and Pests section of this Chapter.
Mass-Casualty Incident (Terrorism)
SHMP
Yes
Thunderstorm
SHMP
No
Tornadoes
FEMA guidance SHMP
No
Transportation Accidents
SHMP
Yes
Tree Mortality
SHMP
Yes
Tsunami
FEMA guidance SHMP
No
Irvine is not a coastal community.
Urban Fire
SHMP OC HMP
Yes
The HMPC identified urban fires as a risk to property and life in Irvine. A discussion of this topic is included in the wildfire section of the document. There are no volcanoes near Irvine to reasonably pose a threat. The HMPC identified wildfire as a major threat to the developed and undeveloped areas of the City and should be included in the document.
Volcano
SHMP
No
Wildfire
FEMA guidance SHMP
Yes
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