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3.2 Hazard Profiles
Requirement §201.6(c)(2)(i): [The risk assessment shall include a] description of
the…location and extent of all natural hazards that can affect the jurisdiction. The plan
shall include information on previous occurrences of hazard events and on the
probability of future hazard events.
Each hazard profile describes the hazard’s location, extent, previous occurrences and the
probability of future events.
Location: location is the geographic areas within the planning area that are affected by
a hazard, such as a floodplain. Hazard areas may be further defined, such as high
landslide hazard areas versus low landslide hazard areas. The entire planning area may
be uniformly affected by some hazards, such as drought or winter storm.
Previous occurrences: previous occurrences document the number of events
experienced within the planning area over a specified period of time. This information
supports estimates of the probability of future events.
Extent: extent is the strength or magnitude of the hazard. Extent can be described in a
combination of ways depending on the hazard. Examples include established scientific
scales or measurement systems such as the Enhanced Fujita Scale or the Richter
Scale. Water depth or wind speed can also indicate the extent of various weather
phenomena. Speed of onset or duration offer other options for characterizing a hazard.
Probability of future events: Probability is the likelihood of a hazard occurring in the
future.
Impact/Vulnerability: The impact and vulnerability of a hazard on a community and
how it affects the people, economy and infrastructure. The impact of a hazard directly
affects the vulnerability of the people, property, and environment, but so to does the
vulnerability determine the level of the impact.
All profiles have been updated to include events that have occurred since the last plans were
completed, amended to reflect any subsequent changes in probability and realigned to follow
the organization of the SHMP. Profiles were further updated with more historical impact
information where it was available. The vulnerability assessment and regional estimates of
potential losses have been expanded, and statewide flood and earthquake losses have been
quantified using HAZUS-MH. Resources used to compile these profiles can be found in
Appendix D.
3.2.1 EMAP Consequence Analysis
A consequence analysis of the potential for detrimental impacts of each hazard was conducted
for the Emergency Management Accreditation Program (EMAP ). The analyses are included at
the end of each hazard profile to support plan accreditation through that program.
Each analysis addresses the following elements:
• Impact on the Public:
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