Medford, Oregon – A Winter Storm Warning remains in effect across portions of far northern California through 10 a.m. PST Friday, with heavy mountain snow and damaging winds expected, according to the National Weather Service in Medford.
The warning covers South Central Siskiyou County, including Mount Shasta, Dunsmuir, and McCloud, as well as higher elevations of western, north-central, and eastern Siskiyou County and mountainous areas of Modoc County. Affected travel corridors include Interstate 5 north of Dunsmuir, Black Butte Pass, Snowman Summit on Highway 89, Scott Mountain Pass on Highway 3, and Cedar Pass on Highway 395.
Forecasters say strong south winds will persist overnight into Wednesday morning, with sustained speeds of 25 to 40 mph and gusts ranging from 50 to 60 mph. Gusts could reach up to 80 mph across high and exposed terrain. Winds are expected to briefly weaken Wednesday morning before strengthening again Wednesday night through Thursday.
Snow levels will gradually lower during the event, dropping from around 6,000 to 7,000 feet overnight to near 3,500 to 5,500 feet by Wednesday night through Friday morning. Snow accumulations are expected to reach 6 to 12 inches above 3,500 feet, with 1 to 3 feet of snow possible above 4,500 to 5,500 feet. The heaviest snowfall is forecast late Wednesday night through Thursday evening.
According to the National Weather Service, travel may become very difficult to impossible, especially in mountain passes and along Interstate 5 near Mount Shasta. Very strong winds could result in extensive tree damage and scattered power disruptions.
Motorists are urged to avoid unnecessary travel and prepare for rapidly changing conditions. Those who must travel should carry emergency supplies and check road conditions by calling 511 or visiting quickmap.dot.ca.gov. Commuters and holiday travelers should anticipate significant delays or closures in higher elevations through the end of the week.
