据气象部门介绍，在较强冷空气的影响下，24日至25日，北京气温将持续下降，24日夜间最低气温 降至零下3摄氏度，25日白天最高气温下滑至个位数，叠加风寒效应，体感十分寒冷，交通出行及户外 活动请注意防寒保暖。24日上午至中午，山区将有雨夹雪或雪，平原部分地区偶有零星雪花飘落（概率 较低）。 气象部门提示，未来一周北京多大风天气，外出请注意防风，远离广告牌等临时搭建物，谨防高空 坠物。气温明显下降，外出请务必做好防寒保暖措施，谨防感冒。此外，冬季天干物燥，日常请注意补 水降燥和用火用电安全，特别是安全使用家中的取暖设备，谨防火灾的发生。（完） 新华社北京11月23日电（记者田晨旭）北京市气象局11月23日发布大风黄色预警：预计11月24日早 晨至前半夜，北京市大部分地区将出现4级左右偏北风，阵风8级左右，山区局地可达10级以上。其中风 力最大时段为24日中午至傍晚，请注意防范。 ...

Core Points - A new cold air mass is affecting northern China, leading to significant temperature drops and snowfall in various regions [6][1] - The temperature in many northern areas is expected to reach new lows, with some places dropping below freezing for the first time this season [6][1] - Continuous snowfall is anticipated in the eastern part of the Tibetan Plateau, with heavy snow expected in Inner Mongolia and Heilongjiang [2][4] Summary by Sections Weather Impact - The cold air mass will cause temperatures to drop by 4°C to 6°C in northern regions, with some areas experiencing drops of over 8°C [6] - Cities like Changchun and Shenyang are expected to set new low temperatures since autumn began, with Taiyuan dropping to freezing and Xining below zero [6][1] Snowfall Forecast - Continuous snowfall is forecasted for the eastern Tibetan Plateau, with moderate to heavy snow expected in parts of Inner Mongolia and Heilongjiang [2][4] - Areas such as Qinghai and Gansu will see varying snowfall, with some regions experiencing blizzards [4][5] Agricultural and Transportation Concerns - The meteorological department warns of the impact of ongoing snowfall on agricultural facilities, livestock, and transportation safety in affected regions [5]

Group 1 - The article discusses a significant temperature drop in various regions, including a decrease of 4 to 6 degrees Celsius in the southeastern part of the northwest region and central northern China [1]

Core Points - A cold air mass is moving east and south, affecting a large area in central and eastern China, with temperatures in the north remaining low and southern regions experiencing new lows for the second half of the year [1][2]. Group 1: Temperature Records - 15 cities, including Harbin, Changchun, Wuhan, and Shanghai, have recorded their lowest temperatures of the second half of the year, with Shenyang and Yinchuan dropping below 0°C for the first time this autumn [2]. - The temperature in central and eastern regions is expected to drop further by 4 to 8°C, with some areas experiencing a decrease of up to 10°C [2]. Group 2: Northern Region Conditions - Most northern areas will maintain low temperatures, with maximum temperatures in places like Inner Mongolia and Northeast China only reaching single digits, and the 0°C line extending to Shaanxi and Gansu [3]. - Current temperatures in the north are significantly lower than the historical averages for this time of year, with maximum temperatures being 8 to 10°C lower than usual, resembling conditions typical of November [3]. Group 3: Southern Region Outlook - Southern cities, including Nanjing and Hefei, are also experiencing their lowest temperatures of the second half of the year, with maximum temperatures below 15°C [4]. - From the 22nd, temperatures in regions like Zhejiang and Shanghai are expected to gradually rise back to seasonal averages [4]. Group 4: Precipitation Conditions - Most of the country will see weak precipitation over the next couple of days, but the Sichuan and Shaanxi regions will continue to experience persistent rain [5]. - The Central Meteorological Observatory forecasts moderate to heavy rain in parts of Shaanxi, Hubei, and Sichuan, advising the public to be cautious of slippery roads and potential secondary disasters [5].

Core Viewpoint - The super typhoon "Haikashan" is approaching China, expected to bring extreme wind and rain to southern regions, particularly affecting Guangdong and surrounding areas [2][6]. Group 1: Typhoon Characteristics - "Haikashan" intensified rapidly, becoming a super typhoon on September 21, with wind speeds exceeding 17 levels [2]. - The typhoon is currently located approximately 750 kilometers south-southeast of Yangjiang, Guangdong, and is moving northwest at about 20 kilometers per hour [2]. Group 2: Affected Regions and Weather Forecast - From September 23 to 25, regions in South China and southern Jiangnan are expected to experience heavy rainfall, with localized areas in Taiwan and coastal Guangdong potentially receiving over 400 millimeters of rain [2]. - The Central Meteorological Observatory predicts heavy to torrential rain in several areas, including parts of Liaoning, Shandong, Jiangsu, and Taiwan [3][4]. Group 3: Preparedness and Risks - Coastal areas in Guangdong, Guangxi, Hainan, Fujian, and Hong Kong need to prepare for the typhoon's impact, as the strong winds pose a high disaster risk [6]. - The occurrence of astronomical tides during this period may lead to seawater backflow in cities like Guangzhou and Zhuhai, increasing the risk of storm surges [7].

Core Viewpoint - The article discusses the recent sandstorm affecting southern China, particularly Guangdong, highlighting its unusual reach and the associated weather conditions. Group 1: Weather Impact - The sandstorm has significantly impacted a wide area, reaching as far as southern China, which is considered rare [1][10] - Guangdong is experiencing dust storms and temperature drops of 3 to 6 degrees Celsius due to strong winds and cold air [3][10] - The weather forecast indicates that most of Guangdong will be sunny to partly cloudy in the coming days, with minimum temperatures ranging from 10 to 20 degrees Celsius depending on the region [12] Group 2: Health and Safety Recommendations - Authorities recommend that vulnerable groups, such as children, the elderly, and patients, stay indoors to avoid health risks from air pollution [5][10] - General public is advised to reduce outdoor activities and wear protective gear like masks and goggles when going outside [12] - It is suggested to close windows and clean the face and nasal passages upon returning home to mitigate the effects of dust exposure [12]