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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 171 <br />Table 4-119. Cold Wave Expected Annual Loss (FEMA National Risk Index) <br />Jurisdiction Population <br />Equivalence <br />Building <br />Value <br />Agriculture <br />Value <br />Total <br />Expected <br />Annual <br />Loss <br />Expected <br />Annual <br />Loss <br />Score <br />Rating <br />Kittitas County $263,143 $570 $88,146 $351,860 81.6 Very High <br />Expected annual loss scores are calculated utilizing an equation that combines values for exposure, annualized frequency, and historic loss <br />ratios (Expected Annual Loss = Exposure x Annualized Frequency x Historic Loss Ratio). <br />4.6.7.8. Severe Weather Risk Index Scores <br />The hail Risk Index score and rating represent a community's relative risk for hail when compared to the <br />rest of the United States. Table 4-120 illustrates the hail Risk Index rating and score for Kittitas County. <br />Table 4-120. Hail Risk Index (FEMA National Risk Index) <br />Jurisdiction Rating Score <br />Kittitas County Very Low 11.5 <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 />The strong wind Risk Index score and rating represent a community's relative risk for strong winds when <br />compared to the rest of the United States. Table 4-121 illustrates the strong wind Risk Index rating and <br />score for Kittitas County. <br />Table 4-121. Strong Wind Risk Index (FEMA National Risk Index) <br />Jurisdiction Rating Score <br />Kittitas County Very Low 8.0 <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 tornado Risk Index score and rating represent a community's relative risk for tornadoes when <br />compared to the rest of the United States. Table 4-122 illustrates the tornado Risk Index rating and score <br />for Kittitas County. <br />Table 4-122. Tornado Wind Risk Index (FEMA National Risk Index) <br />Jurisdiction Rating Score <br />Kittitas County Very Low 7.0 <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 heat wave Risk Index score and rating represent a community's relative risk for heat waves when <br />compared to the rest of the United States. Table 4-123 illustrates the heat wave Risk Index rating and <br />score for Kittitas County. <br />