今年首场大寒潮将使局地降温16℃以上，豫皖苏等省多地停课应对暴雪

Core Viewpoint - The first major cold wave of the year is expected to bring the coldest weather since the start of winter to central and eastern China, with significant impacts on various provinces including school closures and emergency responses [1][2][3] Weather Warnings - The Central Meteorological Administration issued multiple yellow warnings for cold waves, heavy snow, and freezing conditions, indicating a significant drop in temperatures across various regions [1][2] - From January 19 to 21, average daily temperatures in the Huanghuai region and southward are expected to drop by 6-10°C, with some areas experiencing drops of 10-14°C or more [1][2] Snow and Ice Conditions - Heavy snow is forecasted for several provinces, with some areas expecting snowfall of 10-18 millimeters, and local accumulations of 4-12 centimeters [1][2] - Freezing rain is anticipated in southeastern Henan, southwestern Anhui, and other regions, with expected ice accumulation of 1-3 millimeters, and localized areas reaching up to 8 millimeters [2] Emergency Responses - The China Meteorological Administration has upgraded its emergency response to a level three due to the extensive impact of the cold wave, with specific focus on the risks of low-temperature rain, snow, and ice disasters [3] - Local governments in provinces such as Henan and Anhui have announced school closures and other measures to ensure public safety during the severe weather [4]