...HIGH IMPACT WINTER STORM FOR SISKIYOU COUNTY... .A high impact winter storm will likely bring two waves of heavy snowfall to Siskiyou County above 4500 feet. The snow level will start around 5500 feet, although it will gradually lower through the week. * WHAT...Snow. Additional snow accumulations 1 to 8 inches. Winds gusting as high as 40 mph over high and exposed terrain. * WHERE...The southern Oregon Cascades and Siskiyou Mountains. Including the locations of...Diamond Lake. This also includes the following passes or notable locations... Diamond Lake Junction on state highways 230 & 138 at 4478 ft. Crater Lake National Park at 6100 ft. Willamette Pass on state highway 58 at 5090 ft. * WHEN...Until 4 AM PST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions and delays in your commute. * ADDITIONAL DETAILS...Probability of snow accumulation between 4 AM Saturday to 4 AM Monday. Probabilities don't always overlap the hazard's time range. Location >= >= >= 8in 12in 18in -------- ---- ---- ---- Diamond 19% 5% 1% Lake Junction Crater 64% 35% 9% Lake Visit weather.gov/mfr/winter for additional snow probabilities