今晨北京降雪仍在持续，中午基本结束，全天气温处于冰点以下

Summary of Key Points Core Viewpoint - Beijing experienced its first snowfall of the year on January 17, with significant accumulation in various districts, leading to a cold wave with temperatures expected to remain below freezing for the next few days [1][3][5]. Group 1: Weather Conditions - The snowfall was unevenly distributed, with the highest accumulation recorded at Qianling Mountain in Fengtai, reaching 9.9 millimeters [1]. - The average snowfall across the city from 6 AM to 6 AM the following day was 1.2 millimeters, with snow depths in certain areas like Fangshan and Mentougou ranging from 9 to 20 centimeters [1][3]. - The weather forecast indicates a transition from light snow to overcast conditions, with temperatures dropping to a maximum of -4°C during the day and -11°C at night [3][5]. Group 2: Public Advisory - Meteorological authorities have advised the public to dress warmly and wear non-slip shoes due to the ongoing snow and expected strong winds, with gusts reaching up to 6 levels [5]. - The cold weather is expected to persist, with temperatures potentially dropping to -13°C in the following days, emphasizing the need for precautions against the cold [3][5].