新一股冷空气将影响我国中东部大部地区

中央气象台发布预报，19至21日期间，一股冷空气将影响中国中东部地区1。本轮降温幅度较大，中东部大部地区气温将下降4至6摄氏度，华北西部、东北地区等地部分地区降温超过8摄氏度1。长江以北大部地区伴有4至6级偏北风，阵风可达7至9级1。

降雨方面，西南地区东部、江淮、江汉、江南西部等地部分地区将出现中到大雨，其中重庆东部、湖北西南部等地暴雨或大暴雨量达100至120毫米，贵州西南部、云南东部等地暴雨或大暴雨量为100至180毫米1。降雪集中在北方，甘肃西部、内蒙古、河北北部、吉林东部、新疆北部等地将有雨夹雪或小雪，其中新疆阿勒泰及天山高海拔地区可能出现暴雪到大暴雪，降雪量为10至15毫米1。

气象部门提醒，公众需关注大风降温、雨雪天气对健康和交通的影响，同时做好防火工作1。

China's Central Meteorological Administration has forecasted that a new cold air mass will impact central and eastern regions of the country from October 19 to 21, bringing significant temperature declines and hazardous weather conditions 1. The majority of affected areas will experience temperature drops of 4 to 6 degrees Celsius, with some regions including parts of western North China and the Northeast seeing drops exceeding 8 degrees Celsius 1.

The cold front will bring strong winds across most areas north of the Yangtze River, with gusts of 4 to 6 levels and peak wind speeds of 7 to 9 levels 1. Precipitation will vary by region, with southwestern China's eastern areas, the Jianghuai region, the Jianghan Plain, and western Jiangnan experiencing moderate to heavy rainfall, with some areas facing downpours or extreme precipitation 1. Specific forecasts indicate that parts of eastern Chongqing and southwestern Hubei may receive 100 to 120 millimeters of rain, while southwestern Guizhou and eastern Yunnan could see 100 to 180 millimeters 1. Snowfall is expected in western Gansu, parts of Inner Mongolia, northern Hebei, eastern Jilin, and northern Xinjiang, with mixed rain and snow or light snow in most areas 1. High-altitude regions of Xinjiang, particularly the Altai Mountains and the Tianshan range, may experience heavy to extreme snowfall of 10 to 15 millimeters 1.

Meteorological authorities have urged the public to prepare for potential health and transportation impacts from the strong winds and temperature drops, and to take precautions against fire hazards 1.