The Sierra Nevada is under a winter weather advisory as snow returns to the Lake Tahoe region. An atmospheric river is expected to impact the area beginning early Thursday, bringing significant snowfall and strong winds. The National Weather Service has issued the advisory for elevations above 6,500 feet in the northern Sierra Nevada, forecasting between 3 to 8 inches of snow, with the potential for up to 2 feet in higher elevations. Wind gusts could reach up to 50 mph, creating hazardous conditions.