最低-11℃！陕西新一轮雨雪+降温要来了，局地雨夹雪、冻雨

Group 1 - A significant cold air mass is affecting China from north to south, leading to a sharp drop in temperatures across the central and eastern regions, bringing temperatures back to levels typical for this time of year [1] - The latest forecast from the Shaanxi Meteorological Station indicates that there will be rain and snow in northern Shaanxi, with snowfall already reported in the northern region and light rain in the southern areas [1] - Starting from December 19, snowfall has been observed on the G20 Qingyin Expressway from Dingbian to Jingbian, prompting the Shaanxi Traffic Control Company to activate a Level III emergency response for snow removal and road maintenance [3] Group 2 - The forecast for the week in Xi'an shows predominantly cloudy to overcast weather, with maximum temperatures ranging from 7 to 10 degrees Celsius [11][12] - Specific daily weather forecasts indicate a mix of cloudy and sunny conditions, with temperatures fluctuating between -2 and 10 degrees Celsius throughout the week, and potential for scattered rain and snow in high-altitude areas [13] - Strong winds of around Level 4 are expected in many areas, with gusts reaching Level 7, which will help clear air pollution but may pose risks to outdoor structures and items [13]