央视网消息：据中国天气网消息，今天（11月29日），内蒙古东部、东北地区降雪将明显增多、增强， 局地有大到暴雪，公众需防范道路积雪、结冰对交通出行的不利影响。另外，今起几天中东部气温先升 后降，多地冷暖变化大，气温震荡幅度将超过15℃。 内蒙古东北等地大范围降雪来袭 局地有大到暴雪 中东部气温先升后降 12月初气温将大面积创新低 昨天，进入冷空气间歇期，中东部大部地区开启升温模式。今天，升温仍将继续，最高气温20℃线会北 抬至河南北部，10℃线北抬至辽宁中北部，不少地方气温将升至近期最高点，达到同期明显偏高的水 平，东北、华北、黄淮多地偏高幅度超8℃，局地偏高10℃以上。像郑州，今天最高气温将升到23℃， 或打破当地11月下旬最暖纪录。 不过，升温的浪潮即将被冷空气"打断"。今天冷空气影响区域偏北，明天东北、华北一带将加入降温行 列，12月初降温范围将逐渐扩展到南方。 此轮过程中，东北地区等地气温震荡幅度最大。预计今起至12月初，从东北至江南的大部地区最高气温 累计降幅将达到10℃以上，内蒙古中东部、河北北部、吉林、辽宁、江苏等地累计降幅可超15℃，局地 降幅在20℃以上，届时气温将大面积创今年下半年来新低。 ...

Core Points - A new cold air mass is expected to impact the central and eastern regions of China starting tomorrow, leading to a significant drop in temperatures, with some areas experiencing a decrease of 8°C to 10°C [2][4] - The northeastern region will see increased snowfall, with blizzard conditions expected in central Heilongjiang, where snow accumulation could reach 10 centimeters or more [4][5] - The southern regions are experiencing unusual dryness, with relative humidity dropping below 20% in several areas, marking a record low for November [4] Summary by Sections Weather Forecast - The central and eastern regions will experience a brief temperature rise today, but this will be interrupted by the arrival of cold air starting tomorrow [2] - The temperature in Shenyang is projected to drop from a high of 11°C tomorrow to -7°C by December 2, marking the coldest temperatures of the second half of the year [2] Precipitation and Dryness - The southern regions are facing unprecedented dryness, with relative humidity in places like Hubei and Anhui dropping to as low as 9% [4] - In contrast, the northeastern areas will see frequent rain and snow, with significant snowfall expected in Heilongjiang and other parts of the northeast [4][5] Public Advisory - The public is advised to dress in layers due to significant temperature fluctuations, with day-night temperature differences reaching around 15°C in many areas [3] - During windy and dusty conditions, it is recommended to minimize outdoor activities and use protective gear such as masks [3]