A strong and cold storm will push across the Rogue Valley, Southern Oregon and Northern California. The initial problem will come with the arrival of the front in the morning, when rain will turn to snow above 1,500 feet and passes above that elevation will accumulate several inches of snow, making I-5 over Siskiyou and Sexton Summits very slick, icy and dangerous.
The same will be true for 199 over Hayes Hill, and over the Cascades on Lake of the Woods Highway…or any road that is higher than 1,500 feet. By sunset, the rain will turn to snow on the valley floor, including Grants Pass and elevations as low as 500 feet. Even though the heaviest precipitation will have passed, an inch or two is expected in the valleys and 2 to 4 inches above 1,500 feet. Higher amounts are likely in the Illinois Valley and in the up-valley region near Grants Pass and even in Grants Pass.
Two to four inches will fall by Thursday in the Klamath Basin, with the highest amounts over the higher terrain. Another weak, but still cold weather system will bring a trace to one inch to the valleys on Friday morning, followed by showers on Saturday (snow level rising to 2,000 feet). Improving weather is expected tor bring sun to the higher elevations, but fog and low clouds to the valleys next week.