California is experiencing its coldest storm of the season, bringing feet of Sierra snow, heavy rain, and potential flooding. The winter has been unusually warm and dry, with record low snowpack levels across the West, threatening water supply and environmental health. A significant weather shift is expected next week as the jet stream plunges southward, resulting in cooler temperatures and increased precipitation, including feet of Sierra snowfall and heavy mountain snow in Southern California. This will aid in replenishing the snowpack, which is currently only about 50% of average, crucial for water resources. Meanwhile, authorities are warning travelers about dangerous road conditions. Caltrans has advised cancellations and urges drivers to avoid travel due to an impending major winter storm forecast from Sunday through Wednesday. The storm could cause I-5 closures and requires drivers to carry chains and check road conditions beforehand. Crews are proactively treating roads with cinders and brine to mitigate icy conditions, but travel remains risky. The storm's impact extends beyond weather warnings, affecting local communities and infrastructure. Notable incidents include the destruction of a historic totem pole in Weed by a truck and the discovery of remains of a missing woman in Shasta County. Additionally, local events such as the opening of a retro arcade bar in Redding and a student walkout at Oroville High highlight ongoing community life amid the weather challenges. Overall, California faces a critical weather event with potential for flooding, heavy snowfall, and travel disruptions, emphasizing the need for caution and preparedness during this impactful winter storm.