California is experiencing a series of powerful winter storms, bringing significant snowfall and hazardous conditions across the state. The San Francisco Bay Area is under its first winter weather advisory in three years, with expectations of snow, rain, and even lightning. Northern California, particularly the Sierra Nevada, is bracing for the coldest storm of the season, potentially dumping up to 8 feet of snow in some regions. Major travel impacts are anticipated as blizzard-like conditions have already led to the closure of Interstate 80 and chain controls in the Tahoe area. Residents in mountain communities are welcoming the fresh snow, while authorities warn of avalanche risks and possible power outages. As the storm continues to develop, updates indicate the weather pattern could bring feet of snow and heavy rainfall across a broad area, with storm watches in effect through the week.