Laserfiche WebLink
2025 Hazard Mitigation Plan <br />Kittitas County, Washington ffi/tr=-rl+^-J\L!rlnl!!or-rJr .J <br />Estimating drought probability and frequency continues to be difficult, regardless of the improvements in <br />science and technology. According to the 2023 Washington State Enhanced Hazard Mitigation Plan, the <br />probability of future drought related disaster declarations each year will increase by 24% in the State. 10e <br />The drought annualized frequency value represents the average number of recorded drought hazard <br />occurrences, in event days, per year over the period of record (22 years). Table 4-43 outlines the <br />annualized frequency for drought, based on FEMA NRI data, for Kittitas County. <br />Table 443. Drought Annualized Frequency for Kittitas County <br />(FEMA National Risk lndex) <br />4.6.3.5. Past Events <br />Droughts reoccur every few years. Unlike other hazards (e.9., floods and earthquakes), droughts are not <br />easily defined as "events". Kittitas County has experience multiple droughts between 2013 and 2Q23, as <br />illustrated in Figure 4-9.-110 One (1) drought Emergency Declaration has been issued for Kittitas County <br />between 1964 and 2023. <br />Figure 4-9. U.S. Drought Monitor Time Series for Kittitas Gounty <br />10e Washington State Emergency Management Division. (2023). Washington State Enhanced Hazard Mitigation <br />Plan. Retrieved from https://mil.wa.qov/asseV651 ec296d 3 WA SEHMP final 20231004.odf <br />110 U.S Drought Monitor. (n.d.). Time Series (Kittitas County, WA). Retrieved from <br />https ://drouqhtmonitor. u nl.edu/DmData/TimeSeries.aspx. <br />Kittitas County 546 14.8 events per year <br />Annualized frequency is defined as the expected frequency or probability of a hazard occurrence per year, <br />Annualized FrequencyLocationEvents on Record <br />- 2021 <br />100.00x <br />80.00x <br />60.00u <br />40.009 <br />20.001: <br />0.00%I <br />>-t>{){J{/{2{rJ>{>{r{i p - d i, b i d t' p P. ! ) P, i t'. p { i, t'. d :B B B B ts B B B? B ? B B B B BE a? B ? B iTp>drdPpdilPpFFddDbf6ooa-u?Jdoa@o3 P3d' <br />o{o)P <br />I <br />Chapter 4: Hazard ldentification and Risk Assessment 101