Group 1 - On January 17, 2023, Beijing experienced uneven snowfall, with significant accumulation in areas such as Fangshan, Mentougou, Shijingshan, and Haidian, ranking among the top in the country for precipitation during the same period [1] - The average snowfall in Beijing from 06:00 on January 17 to 08:00 on January 18 was 1.2 mm, with an average of 1.6 mm in urban areas; the highest recorded snowfall was 9.9 mm in Fengtai District [1] - A yellow warning for road icing and sustained low temperatures has been issued, advising caution for cold weather and traffic safety [1] Group 2 - From January 18 to 21, a cold wave is expected to bring significant temperature drops and increased precipitation across central and eastern regions of China, with average daily or minimum temperatures expected to decrease by 6 to 12 degrees Celsius [2] - Certain areas, including parts of Huanghuai, Jianghuai, Jianghan, and Jiangnan, may experience temperature drops of 12 to 14 degrees Celsius, with localized drops exceeding 16 degrees Celsius [2] - Heavy snow or blizzards are anticipated in provinces such as Shaanxi, Henan, Shandong, Hubei, Anhui, and Jiangsu, while freezing rain may occur in parts of Henan, Hubei, Hunan, Guizhou, and Chongqing [2]

Core Viewpoint - The first significant snowfall of the year in Hebei Province is expected from the night of January 17 to January 18, accompanied by a drop in temperature and strong winds, which may impact transportation and road conditions [1][2] Weather Forecast - The snowfall will primarily consist of light snow or flurries, with localized areas experiencing heavier snowfall. Specific regions such as eastern Cangzhou may see moderate snow [1] - From January 19 to January 20, temperatures in northern and eastern regions are expected to drop by 8°C to 12°C, while other areas will see a decrease of 4°C to 7°C. The lowest temperatures may reach -35°C to -27°C in the Bashang area [1] Transportation Impact - A joint traffic weather risk alert was issued on January 16, indicating that most highways in the province will face ice risk from the night of January 17 to January 18. Specific areas like western Baoding, Shijiazhuang, Xingtai, and Handan will also have road icing risks on January 19 [2] - Strong winds from January 18 to January 19 may pose risks for highway travel in Zhangjiakou and Chengde, necessitating cautious driving [2]

Group 1 - The article reports that today marks the first day of "Four Nine," with snowflakes falling in the capital, bringing surprise to the citizens [2] - The meteorological department indicates that the main snowfall period will be from this evening to tomorrow morning [2]

Summary of Key Points Core Viewpoint - A significant cold air mass is expected to bring snowfall to Beijing from the evening of the 17th to the 18th, followed by strong winds and sustained low temperatures [1]. Weather Forecast - Snowfall will begin in the western regions and gradually affect the plains during the first half of the night, ending by the afternoon of the 18th [1]. - Most areas will experience light to moderate snow, with snow depth ranging from 1 to 3 centimeters, while mountainous areas may see 3 to 5 centimeters [1]. - After the snowfall, a north wind of 3 levels will occur from the night of the 18th to the 19th, with gusts reaching around 6 levels, and over 7 levels in mountainous areas [1]. - Daytime high temperatures will drop to between -5°C and -3°C from the 18th to the 21st, with nighttime lows between -13°C and -11°C [1]. Safety Precautions - It is advised to monitor the latest weather forecasts and warnings from meteorological departments and prepare accordingly [2]. - Due to slippery roads and reduced visibility from the snowfall, travel plans should be arranged carefully, and driving safety should be prioritized [3]. - The significant temperature drop and prolonged low temperatures necessitate precautions for home heating and safety regarding electricity, fire, and gas usage [3]. - Outdoor activities should be approached with caution, ensuring adequate clothing for warmth to prevent illnesses [3]. - After the snow, increased winds require individuals to stay away from tall trees and temporary structures to avoid risks from falling objects [3].

Group 1 - A cold wave is expected to affect most parts of China from January 17 to 21, with temperatures dropping by 6 to 10 degrees Celsius, and some areas experiencing drops of over 12 degrees Celsius [1] - The Central Meteorological Administration forecasts widespread rain and snow in the central and eastern regions, with heavy snow expected in parts of Shaanxi, Shanxi, Henan, Shandong, Hubei, Hunan, and Anhui [1] Group 2 - In Xinjiang, heavy snowfall has led to traffic control measures on the G30 Lianhuo Expressway, with emergency responses initiated by local police [2] - The snowfall is expected to continue until the night of January 16, with temperatures in the mountainous areas dropping below -15 degrees Celsius, raising concerns about road icing [4] Group 3 - In Liaoning, snowfall occurred from the night of January 14 to the day of January 15, prompting snow removal efforts and a yellow cold wave warning from the meteorological bureau [5] - The region is expected to experience two cold air masses, with temperatures in northern Liaoning dropping below -20 degrees Celsius and mountainous areas potentially reaching -26 to -31 degrees Celsius [5] Group 4 - In Chongqing, heavy fog reduced visibility to less than 500 meters, leading to temporary traffic control on the Yangtze River [6] - Normal navigation resumed by 11:40 AM after the fog dissipated, but maritime authorities advised vessels to remain vigilant due to frequent foggy conditions [8] Group 5 - In Jiangsu, an orange fog warning was issued due to visibility dropping below 200 meters, with some areas experiencing visibility of less than 50 meters [9] - Traffic restrictions were implemented on major highways, but conditions improved by late morning as the fog cleared [9]

Summary of Key Points Core Viewpoint - A significant cold wave is expected to hit most parts of central and eastern China starting January 17, leading to a notable temperature drop and snowfall in Beijing, which may adversely affect travel plans [1][2]. Group 1: Weather Forecast - January 17 marks the beginning of a cold wave, with Beijing experiencing a noticeable snowfall from the evening of January 17 to the daytime of January 18 [1]. - The highest daytime temperature in Beijing is expected to drop below freezing, resulting in a cold and damp feeling [1]. - The following week will see continued low temperatures, necessitating precautions against cold-related health issues, especially for vulnerable groups [1]. Group 2: Travel and Safety Warnings - During the snowfall, road conditions will be slippery, visibility will decrease, and there is a risk of snow accumulation and ice formation, which could hinder transportation [2]. - It is advised to avoid mountainous areas during the snowfall due to higher risks of snow and ice [2]. - Public is urged to dress warmly and take precautions against colds and cardiovascular diseases as temperatures drop significantly [2].

Group 1 - The core viewpoint of the article highlights the upcoming snowfall in Beijing over the weekend, which is expected to impact travel and outdoor activities significantly [1] Group 2 - The weather forecast indicates a significant drop in temperature, with daytime highs expected to be below freezing, ranging from -5°C to 1°C from January 17 to 24 [1] - Wind conditions are also a concern, with a north wind expected to reach speeds of around 3 levels, with gusts up to 5 levels, and localized gusts in mountainous areas reaching 7 levels [1] - The snowfall is predicted to begin in the western regions of Beijing during the day on January 17, transitioning to citywide snowfall by night, primarily affecting travel during the weekend [1] - The article advises the public to take precautions against cold weather, including wearing appropriate clothing and being cautious of slippery roads due to snow accumulation [1]

Core Viewpoint - Beijing is expected to experience significant temperature drops and cold air activities over the next few days, with snowfall anticipated over the weekend, which may impact transportation safety [1] Weather Forecast - From January 16 to 18, multiple cold air activities will lead to a noticeable decrease in temperature in Beijing [1] - On January 18 to 21, a stronger cold air mass is forecasted to arrive [1] - The highest temperature on January 16 is projected to be 4°C, with a nighttime low of -7°C [1] - On January 17, the daytime high is expected to be -2°C, with a nighttime low of -6°C [1] - On January 18, the daytime high will drop to -3°C, and the nighttime low could reach -10°C [1] Snowfall and Safety Precautions - Light snow is expected over the weekend, necessitating public awareness regarding traffic safety and potential slippery conditions [1] - Meteorological authorities advise the public to dress warmly and take precautions against colds due to the significant drop in temperatures [1]

此次过程降温明显，低温持续时间较长，寒意爆满，一定要持续注意防寒防冻。此外，降雪导致道路湿滑易结冰，也要注意交通安全，外出注意防滑。 晴空回归。今天白天，京城迎来近期的一个短暂小温暖，预计午后最高气温在8℃左右，午间暖阳下较适宜户外活动。但从明天起，在冷空气的多重打压 下，气温将一降再降。 北京气象部门特别提醒：本周六、日京城将再迎降雪，主要飘雪时段是周六夜间到周日白天。气温方面，从周六开始气温就将全线跌入冰点以下，特别是 下周一到下周三（19日到21日），京城最高气温仅-3℃左右，最低气温-12℃上下。意味着全天气温都极低，户外就相当于冰箱的冷冻层。 ...

Core Viewpoint - A strong cold air mass is affecting northern China, leading to significant wind, temperature drops, and rain/snow weather conditions from January 8 to 10 [2][3]. Group 1: Weather Impact - From January 8 to 10, regions including Northwest, North China, Northeast, and Huanghuai will experience north winds of 4 to 6 levels, with gusts reaching 7 to 9 levels, and some high-altitude areas in North China may see gusts exceeding 10 levels [2][3]. - Temperatures are expected to drop by 4 to 8 degrees Celsius, with some areas experiencing drops of over 10 degrees Celsius [2][3]. - Dust storms are forecasted in parts of Gansu, Inner Mongolia, and other areas, with some regions likely to experience sandstorms [2][3]. Group 2: Snowfall Forecast - From January 9 to 10, moderate to heavy snow is expected in eastern Inner Mongolia and central and eastern Northeast China, with localized heavy snowfall in eastern Jilin [2][3]. - Specific forecasts indicate that from January 9 to 10, areas in Inner Mongolia, northeastern regions, and northern Hebei may see light to moderate snow or sleet, with some areas experiencing heavy snow [4][7]. Group 3: Wind Conditions - Wind conditions will remain significant, with 4 to 6 level winds expected in Inner Mongolia, Liaoning, and other regions, while the Bohai Sea and Yellow Sea will see winds of 6 to 8 levels, with gusts around 9 levels [6][7].