California is bracing for a series of winter storms expected to hit the Bay Area and Sierra Nevada region. With a significant weather change, forecasts predict up to 10 feet of snow in the Sierra Nevada mountains, impacting travel and prompting winter weather advisories across multiple counties, including Yosemite and Mono. Lighter snow is anticipated Monday night into Tuesday, while steadier snowfall is expected Tuesday night. Residents are warned of difficult travel conditions and significant snowfall accumulation, with storm warnings in effect. Rain is also forecasted for Northern California, signaling the end of a dry winter spell.