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Winter Trends <br />Given Snoqualmie Pass’s popularity as a winter <br />destination with heavy snowfall and a significant <br />influx of visitors during the ski season, it’s important <br />to understand how collision trends vary by season. <br />As shown in Figure 17, 67 of 107 (63%) <br />of collisions occurred during the winter <br />season (December, January, and February). <br />The collision data reveals several notable trends <br />in driving behavior and environmental conditions. <br />A majority of winter collisions occurred over the <br />weekend, suggesting increased traffic traveling <br />through the Pass. Most collisions occurred at <br />midblock locations rather than at intersections, as <br />highlighted by the trend of drivers going straight <br />ahead. These patterns suggest key targeted <br />countermeasures at midblock locations that address <br />speeding and distracted driving. <br />Summer Trends <br />Although fewer collisions occurred during the <br />summer months, they were associated with distinct <br />conditions and patterns from winter collisions. <br />20 of 107 collisions (18%) occurred in June, <br />July, August, or September. <br />Seasonal trends are summarized in Figure 18 on <br />the next page, and additional charts and takeaways <br />from the collision data analysis are reported in <br />Appendix E. <br />Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec <br />26 <br />21 <br />7 <br />1 2 <br />6 7 <br />2 <br />5 5 5 <br />20 <br />63% <br />19% <br />67 of 107 <br />collisions (63%) <br />occurred during the <br />winter months <br />19%Dec - Feb <br />67 Collisions <br />Mar - May: 10 Collisions <br />Oct - Nov: 10 Collisions <br />Jun - Sep <br />20 Collisions <br />Figure 17. All Collisions by Month <br />in Snoqualmie Pass (2014 - 2023) <br />Source: Fehr & Peers, 2025. <br />32Kittitas County | Snoqualmie Pass Comprehensive Safety Plan