* WHAT...Snow above 4500 feet. Additional snow accumulations of a trace to 3 inches. * WHERE...Cascades of Lane and Cascades of Marion and Linn Counties. * WHEN...Until 5 PM PDT this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...Snow showers are expected throughout the day and will gradually decrease this evening, with the highest snow accumulations over the Marion and Linn County Cascades. Have a winter emergency driving kit readily available. Common items to include: flashlight, batteries, blankets, a shovel, water, non-perishable food items, tire chains, etc. Be aware that walking surfaces may be slick. Walk with extra care. For the latest road conditions and chain restrictions in Oregon, call 5 1 1, or visit: www.tripcheck.com. For the latest road conditions and chain restrictions in Washington, visit: wsdot.com/travel/real-time/map