Laserfiche WebLink
2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br />Table 4-146. Wildfire Expected Annual Loss (FEMA National Risk Index) <br />4,6,9,8. Wildfire Risk lndex Scores <br />The wildfire Risk lndex score and rating represent a community's relative risk for wildfires when compared <br />to the rest of the United States. Table 4-147 illustrates the wildfire Risk lndex rating and score for Kittitas <br />County. <br />fabfe 4-147. Wildfire Risk Index (FEMA National Risk Index) <br />Table 4-148 represents the wildfire Total Risk Score for the Kittitas County, based on the Risk <br />Assessment Methodology, as defined in Section 4.3 of this Plan. <br />It is important to note that the sub hazards for wildfire (i.e., wildfire smoke) were individually ranked in the <br />hazard risk ranking; however, wildfire is considered as the main hazard throughout this Plan. <br />Table 4-148. Wildfire Total Risk Score <br />Kittitas County $s,zts $15.9 Million $7,281 $15.9 Million 99.0 Very High <br />Expected annual loss scores are calculated utilizing an equation that combines values for exposure, annualized frequency, and historic |oss <br />ratios (Expected AnnualLoss = Exposure x Annualized Frequency x Historic Loss Rafro). <br />Population <br />Equivalence <br />Total <br />Expected <br />Annual <br />Loss <br />Expected <br />Annual <br />Loss <br />Score <br />RatingJurisdictionBuilding <br />Value <br />Agriculture <br />Value <br />Kittitas County Very High 98.6 <br />Risk Index scores are calculated using an equation that combines scores for Expected Annual Loss due to natural hazards, Social <br />Vulnerability and Community Resilience (Expected Annual Loss x Social Vulnerability / Community Resilience = Risk lndex). <br />Jurisdiction Rating Score <br />Hazard <br />Event Probability <br />Factor Vulnorabillty lmpact <br />Wildfire J 18 11 30 59 <br />Wildfire Smoke J 9 't0 20 39 <br />Consequence: Sum of all weighted factors. <br />Extent: Sum of the weighted Extent factors. <br />Vulnercbility: Sum of the weighted Vulnerabilitv factors <br />Classificatlon lmpactVulnerability <br />lmpact: Sum of the weighted lmpact factors. <br />fofal Risk Score = Probability x Consequence <br />* Normalized to 100 <br />Low (L)1 0-6 0-12 0 -24 0 -24 <br />Medium (M)2 7-12 7-12 13 -26 25-50 25-52 <br />3 13 - 18 13-18 27 -39 51 -75 53 and above <br />The legend-specifically the assignment of low, medium, and high-provides an additional means to qualitatively assess the probability factor, sum of <br />weighted factors, and the total risk scores for each hazard. The Consequence Score represents the sum of the Extent, Vulnerability, and lmpact Factors. <br />The Total Risk Score is a measure of Probabilitv and Conseouence. <br />trii!l:r (llli)r <br />Total Risk Score Legend <br />',,,.t t :j <br />Total Risk <br />Score <br />Chapter 4: Hazard ldentification and Risk Assessment 196