All-Hazards Mitigation Plan Update 2020-21

All-Hazard Mitigation Plan Update 2020-21

HMP Update Overview

Every five years the City of Seattle Office of Emergency Management (OEM) updates the All-Hazards Mitigation Plan (HMP). This HMP helps us minimize risks to people, property, and the environment from natural and man-made disasters.


What is the All-Hazards Mitigation Plan (HMP)?

The HMP is a comprehensive document that contains detailed information about the types of hazards we face, and the actions we can take before disaster strikes to reduce our vulnerability. Once the HMP is updated, reviewed, and approved by the Federal Emergency Management Agency (FEMA), Seattle keeps its eligibility to apply for FEMA mitigation grants:

                        • Hazard Mitigation Grant Program (HMGP)

                        • Building Resilient Infrastructures and Communities (BRIC)

                        • Flood Mitigation Assistance Program

What hazards are assessed?

The HMP addresses six types of hazards:

          Climate Change- Rising temperatures, sea level rise, decreasing snowpack and streamflows

          Geologic Hazards- Earthquake, landslides, volcanic, tsunamis and seiches

          Biologic Hazards- disease/pandemic, bioterrorism

          Intentional Hazards- Social unrest, attacks, cyberattack and disruption

          Infrastructure Hazards- Transportation incidents, fires, hazardous materials incidents, infrastructure and structural failures, power outages

          Weather Hazards- Excessive heat events, flooding, snow and ice, water shortages, windstorms

HMP Update Timeline

What is the timeline for the Update?

The HMP Update needs to be completed in 2021. A technical analysis of known hazards, the Seattle Hazard Identification and Vulnerability Analysis (SHIVA), was updated in 2019. Staff from various departments are working together to review the existing HMP, capitol programs and other departmental plans.

Timeline: 2019-Risk Assessment, Q1/Q2 2020- Capability Assessment, Q3/Q4 2020-Mitigation Strategies, Q4 2020-Draft Plan for Public Review, Q1 2020- Approval process begins

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