寒潮蓝色预警：黄淮江淮江汉江南等地部分地区降温可达12至14℃

Core Points - A cold wave blue alert has been issued by the Central Meteorological Observatory, indicating significant temperature drops across central and eastern China from January 18 to 21 [1] - The average daily or minimum temperatures are expected to decrease by 6 to 12 degrees Celsius, with some areas experiencing drops of 12 to 14 degrees Celsius, and localized drops exceeding 16 degrees Celsius [1] - By the morning of January 21, the 0°C isotherm will move southward to areas including southern Guizhou, southern Hunan, central Jiangxi, and southern Zhejiang [1] Temperature Forecast - From January 18 at 08:00 to January 20 at 08:00, temperatures in regions such as Gansu, Inner Mongolia, Ningxia, Shaanxi, North China, Huanghuai, Jianghan, Jianghuai, and Jiangnan are expected to drop by 6 to 10 degrees Celsius [1] - Specific areas like central Inner Mongolia, western Shanxi, Anhui, eastern Hubei, Hunan, and eastern Guizhou may see temperature declines of 10 to 14 degrees Celsius [1] Advisory Measures - Government and relevant departments are advised to prepare for the cold wave according to their responsibilities [5] - Individuals are encouraged to wear additional clothing for warmth [5] - Protective measures should be taken for tropical crops and aquatic products [5] - Preparations for wind protection are recommended [5]