California is bracing for significant winter storms that are expected to bring heavy rain and snow across the state. A winter storm warning is in effect for various regions, particularly in the Sierra Nevada, where some areas could see up to 8 feet of snow. Travel disruptions are anticipated with major impacts on highways and roadways, especially in Northern California and the mountains of Southern California. Officials warn travelers to reconsider plans, as the storms are likely to generate dangerous conditions, including high winds and whiteout scenarios. As the systems approach, rain is expected to hit coastal areas while snow levels will drop significantly, potentially affecting travel from Del Norte to Mendocino. Residents are advised to prepare for adverse weather conditions throughout the upcoming week.