A winter storm is causing significant travel disruptions across the North Coast of California, with snowy conditions and slick roads posing challenges for drivers in Humboldt, Trinity, Del Norte, Mendocino, and Lake counties. The National Weather Service in Eureka reports snow falling above 2,000 to 2,500 feet, with some areas seeing snow as low as 1,500 feet. This has led to hazardous travel conditions and chain requirements on highways like U.S. 101, State Route 299, and State Route 36. Motorists are urged to check road conditions before traveling, and Caltrans is actively monitoring the situation, providing updates on closures and restrictions.