湘北部分地区中到大雪，常德局地暴雪

Core Viewpoint - A significant cold wave and snowstorm are expected to impact central and eastern China from January 18 to 21, with temperatures dropping sharply and widespread rain and snow forecasted [4][9]. Weather Forecast - The Central Meteorological Administration predicts that the cold wave will bring strong temperature drops, with some cities experiencing declines of over 20°C [4]. - The snowstorm is expected to be extensive, with heavy snowfall concentrated in regions such as southeastern Shaanxi, southern Shanxi, and parts of Henan and Hubei from January 19 to 20 [5][6]. - The maximum ice thickness during this weather event could reach 5 to 8 millimeters, with some mountainous areas exceeding 10 millimeters [7]. Emergency Response - The National Disaster Reduction Committee has initiated a Level 4 emergency response for low-temperature rain and snow disasters in Anhui, Henan, Hunan, and Guizhou [9][10]. - Authorities are focusing on ensuring safety, maintaining transportation, and providing power supply, while also preparing for emergency rescue operations [10]. Health Precautions - Health experts warn that low temperatures can exacerbate respiratory and cardiovascular diseases, particularly among vulnerable populations [11]. - Recommendations include keeping warm, avoiding prolonged exposure to cold, and ensuring safe outdoor practices to prevent falls and injuries [11].