(1 of 3) * WHAT...Heavy snow above 5000 ft. Additional snow accumulations between 6 and 12 inches. Winds gusting as high as 45 mph. * WHERE...Southern Oregon Cascades north of Highway 140, including Crater Lake National Park, Diamond Lake and Highways 230, 62 and 138 as well as Highway 58 at Willamette Pass. * WHEN...Until 5 PM PDT Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes. Gusty winds could bring down tree branches. (2 of 3) ...EARLY SEASON SNOWFALL TO THE CASCADES THROUGH FRIDAY AFTERNOON... .Snow showers will continue through Friday afternoon. Highest accumulations will be above 4500 feet in the Marion, Linn, and Lane County Cascades. * WHAT...Heavy snow expected. Additional snow accumulations of 6 to 15 inches above 4500 ft. * WHERE...Cascades of Marion and Linn Counties. * WHEN...Until 5 PM PDT Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes. (3 of 3) ...EARLY SEASON SNOWFALL TO THE CASCADES THROUGH FRIDAY AFTERNOON... .Snow showers will continue through Friday afternoon. Highest accumulations will be above 4500 feet in the Marion, Linn, and Lane County Cascades. * WHAT...Heavy snow expected. Additional snow accumulations of 5 to 10 inches above 4500 ft. * WHERE...Cascades of Lane County. * WHEN...Until 5 PM PDT Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes.