刚穿上羽绒服又要挂起来 今冬“冷暖转换”为何频繁？

Core Points - A significant cold wave has affected multiple regions in China, leading to a notable drop in temperatures and snowfall in some areas [1][5] - The temperature in Nanning, Guangxi, dropped from a high of 26.7°C to 14°C, a decrease of over 10°C [3] - The cold wave is expected to be followed by a warming trend starting from November 19, with most of the country experiencing higher temperatures [6] Summary by Sections - Weather Impact: The cold wave has resulted in the first snowfall of the season in high-altitude areas of Chongqing, with residents sharing their experiences on social media [5] - Temperature Forecast: The China Meteorological Administration predicts a return to warmer temperatures after November 19, although fluctuations will still occur due to weak cold air [6] - Winter Conditions: The winter is expected to be influenced by La Niña, leading to frequent cold air activities and significant temperature variations [6] - Clothing Recommendations: Residents are advised to dress appropriately for the weather, with suggestions for layering in northern regions and thicker clothing in the south [6] - Future Cold Air Events: A stronger cold air mass is anticipated to impact China from November 24 to 27, with some regions likely to experience lower temperatures than usual for this time of year [6]