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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 172 <br />Table 4-123. Heat Wave Risk Index (FEMA National Risk Index) <br />Jurisdiction Rating Score <br />Kittitas County Relatively Low 37.0 <br />Risk Index scores are calculated using an equation that combines scores for Expected Annual Loss due to natural hazards, Soci al <br />Vulnerability and Community Resilience (Expected Annual Loss x Social Vulnerability / Community Resilience = Risk Index). <br /> <br />The cold wave Risk Index score and rating represent a community's relative risk for cold waves when <br />compared to the rest of the United States. Table 4-124 illustrates the cold wave Risk Index rating and <br />score for Kittitas County. <br />Table 4-124. Cold Wave Risk Index (FEMA National Risk Index) <br />Jurisdiction Rating Score <br />Kittitas County Relatively High 79.5 <br />Risk Index scores are calculated using an equation that combines scores for Expected Annual Loss due to natural hazards, Soci al <br />Vulnerability and Community Resilience (Expected Annual Loss x Social Vulnerability / Community Resilience = Risk Index). <br /> <br />Table 4-125 represents the severe weather Total Risk Score for the Kittitas County, based on the Risk <br />Assessment Methodology, as defined in Section 4.3 of this Plan. <br /> <br />It is important to note that the sub hazards for severe weather (i.e., strong winds/damaging winds, <br />thunderstorms, cold wave/extreme cold, heat wave/extreme heat, hail, and tornado) were individually <br />ranked in the hazard risk ranking; however, severe weather is considered as the main hazard throughout <br />this Plan. <br />