我国大部地区迎降温

Core Viewpoint - The article discusses the impact of a cold wave on a large part of China, leading to the upgrade of the major meteorological disaster response level from four to three due to cold wave, freezing, and snowstorm warnings [1] Weather Warnings - The Central Meteorological Observatory issued a yellow warning for cold waves, freezing, and a blue warning for snowstorms as of January 18 [1] - From the night of January 18 to January 21, the average daily or minimum temperatures in central and eastern China are expected to drop by 6°C to 12°C, with some areas experiencing drops of 12°C to 14°C, and localized drops exceeding 16°C [1] Temperature Forecast - By the morning of January 21, the zero-degree Celsius line is projected to move southward to a line from southern Guizhou to southern Hunan, central Jiangxi, and southern Zhejiang [1] Snowfall Predictions - The Central Meteorological Observatory forecasts heavy snow in parts of southern Shaanxi, central and southern Henan, northern Anhui, and northwestern Hubei from 20:00 on January 18 to 20:00 on January 19 [1] - Areas in southern Shaanxi, southern and western Henan, northwestern Anhui, and northwestern Hubei may experience blizzards during this period [1] Freezing Rain Forecast - Freezing rain or ice pellets are expected in parts of southeastern Henan, western Anhui, northern and western Hubei, southeastern Shaanxi, and northern Chongqing from 20:00 on January 18 to 20:00 on January 19 [1]