Group 1 - The central meteorological station reported snowfall and sleet in various regions including eastern Tibet, western Sichuan Plateau, southern Qinghai, northeastern Inner Mongolia, Heilongjiang, and western Xinjiang on October 30 [1] - From October 30 to 31, rain and snow are expected to intensify in the southern and eastern parts of the Tibetan Plateau, with moderate to heavy snow or sleet in southern and central eastern Tibet, southern Qinghai, and northern western Sichuan Plateau, with localized heavy or blizzard conditions [1] - A strong cold air mass is anticipated to affect most parts of China around November 7, leading to a temperature drop of 4 to 8 degrees Celsius in most areas north of the Yangtze River, with localized drops exceeding 10 degrees Celsius [3] Group 2 - Over the next three days, weak cold air will cause temperature drops of 2 to 4 degrees Celsius in regions such as Inner Mongolia, southern Northeast China, northern Shaanxi, and northern North China, with localized drops around 6 degrees Celsius [4] - Areas including eastern Inner Mongolia, most of Heilongjiang, and Jilin will experience light to moderate snow or sleet, with heavy snow in parts of western and southern Heilongjiang and eastern Jilin [4] - Experts warn of continuous rain and snow in eastern Tibet, with expected new snow accumulation of 2 to 6 centimeters, and localized depths reaching 8 to 15 centimeters, advising the public to clear snow from roofs to prevent collapses [5]

Summary of Key Points Core Viewpoint - The upcoming three days (October 29 to 31) will see frequent rain and snow in parts of the Tibetan Plateau, while precipitation will increase in the central and eastern regions of China, necessitating public attention to travel safety during inclement weather [1][2][7]. Weather Conditions - Significant snowfall was reported in parts of the Tibetan Plateau, with light to moderate snow or sleet observed in regions such as eastern Tibet and northern Sichuan Plateau [2][4]. - The Central Meteorological Observatory forecasts continued widespread rain and snow in the Tibetan Plateau, with central and eastern China experiencing increased precipitation, primarily light to moderate rain [2][6]. Temperature Changes - Southern regions will experience a slight drop in temperatures due to increased rainfall, with maximum temperatures in cities like Guiyang and Changsha expected to decrease significantly [5][8]. - A cold air mass is anticipated to impact central and eastern China later this week, leading to temperature drops of 4 to 6 degrees Celsius, with some areas experiencing drops exceeding 8 degrees Celsius [5][8]. Public Advisory - Meteorological authorities have advised the public to take precautions against cold weather and to be aware of the potential impacts of snow on transportation and agriculture [7].

Core Points - The article discusses the ongoing cold weather in Northeast China, with temperatures significantly below normal levels, particularly in cities like Changchun, where highs are only 4 to 5 degrees Celsius [3] - A warming trend is expected to begin in the coming days across most regions, with southern areas potentially reaching temperatures above 25 degrees Celsius by the end of the month [3] - The article highlights the forecast for increased snowfall in the Tibetan Plateau and parts of Inner Mongolia, with some areas experiencing heavy snowfall [4][5] Summary by Sections Northeast Weather Conditions - Northeast China is experiencing a significant drop in temperatures, with a decrease of 4 to 8 degrees Celsius compared to normal [3] - Major cities like Changchun are seeing record low temperatures for the past six months, with highs around 4 to 5 degrees Celsius and lows below freezing [3] Warming Trend - Following the current cold spell, temperatures in the northern regions are expected to gradually rise, while southern regions have not been affected by the cold air and are experiencing slight increases in temperature [3] - By October 29, temperatures in northern areas may rise to around 20 degrees Celsius, with southern regions reaching above 25 degrees Celsius [3] Snowfall Forecast - The article warns of an impending increase in rain and snow in the Tibetan Plateau, with some areas likely to experience heavy snowfall [4][5] - Specific regions such as the eastern part of Tibet and the northern part of the Sichuan Plateau are expected to see significant snowfall, with local areas potentially facing blizzard conditions [5][6]

Core Viewpoint - The National Climate Center forecasts significant rainfall and snowfall across various regions of China during the National Day and Mid-Autumn Festival holiday period from October 1 to 6, 2023 [1] Weather Forecast - Heavy rain or storms are expected in northeastern Sichuan, northern Chongqing, central and southern Shaanxi, western Hubei, central and southern Henan, southern Shandong, and central and northern Jiangsu and Anhui [1] - The Qinghai-Tibet Plateau and northern Xinjiang will experience rain and snow, with moderate to heavy snow or sleet in areas along the Tianshan Mountains, eastern and southern Qinghai, and eastern and southwestern Tibet, with localized heavy snow in southwestern Tibet [1] Cold Air Activity - Three cold air events are anticipated in northern regions, with two weak cold air fronts affecting from October 1 to 4, leading to dust storms in eastern and southern Xinjiang, western Gansu, and western Inner Mongolia [1] - A stronger cold air front from October 5 to 7 will bring 4 to 6 level north winds, temperature drops of 4°C to 8°C, and localized drops exceeding 10°C, along with strong winds of 7 to 9 levels in eastern sea areas [1]

Core Insights - Northern China is experiencing a temperature rise, reaching levels above the historical average, while southern regions remain cool due to ongoing rain [1][6] - The southern regions, particularly Jiangnan, Southwest, and South China, are facing significant rainfall, with some areas experiencing heavy rain and even local torrential rain [2][3] - The cold wave's impact is diminishing, leading to a warming trend in northern China, with temperatures expected to exceed 20°C in many areas by the Qingming holiday [6] Summary by Sections Temperature Trends - Northern China is seeing a notable temperature increase, with cities like Shijiazhuang reaching 16.7°C, while southern cities like Changsha are only at 7.8°C [6] - By the Qingming holiday, many areas in northern China are expected to have maximum temperatures of 20°C or higher [6] Rainfall and Weather Conditions - Southern China continues to experience widespread rain, with regions like southern Jiangxi and northern Taiwan facing moderate to heavy rainfall [2] - The Central Meteorological Observatory predicts ongoing rain and snow in northeastern regions, with some areas experiencing significant snowfall [3] Public Advisory - Meteorological departments are advising the public to be cautious of slippery roads due to rain and snow, recommending reduced speed and increased following distance while driving [5]