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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 68 <br />Hazard <br />Event <br />Probability Consequence <br />(Sum of weighted factors) Total Risk <br />Probability <br />Factor <br />Extent <br />(sum of the weighted <br />Extent factors) <br />Vulnerability <br />(sum of the weighted <br />Vulnerability factors) <br />Impact <br />(sum of the weighted <br />Impact factors) <br />Consequence <br />Score <br />Total Risk <br />Score <br />(Probability x <br />Consequence) <br />Volcanic Activity 1 12 6 15 33 20 <br /> <br />Total Risk Score Legend <br />Classification Probability <br />Factor <br />Extent <br />(sum if the weighted <br />Extent factors) <br />Vulnerability <br />(sum if the weighted <br />Vulnerability factors) <br />Impact <br />(sum if the weighted <br />Impact factors) <br />Consequence <br />Score <br />Total Risk <br />Score <br />Low (L) 1 0 – 6 0 – 6 0 – 12 0 – 24 0 – 24 <br />Medium (M) 2 7 – 12 7 – 12 13 – 26 25 – 50 25 – 52 <br />High (H) 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 weighted factors, and the total risk <br />scores for each hazard. The Consequence Score represents the sum of the Extent, Vulnerability, and Impact Factors. The Total Risk Score is a measure of Probability and Consequence. <br />