受冷暖空气交汇影响，今明两天南方多地将出现较强降雨伴强对流天气1。其中，贵州中北部、重庆中南部、湖北南部和东部、湖南北部、江西北部、安徽南部、浙江西南部、云南等地部分地区将遭遇中到大雨，局地可能出现暴雨或大暴雨1。江淮、江南部分地区的降雨还将伴随雷电、短时强降雨等强对流现象1。
从明天起，新一股冷空气将登场，自西向东影响中国大部地区1。这轮冷空气带来的降温幅度明显，长江以北大部分地区气温将创半年新低，东北多地最低气温将跌破冰点1。其中，哈尔滨今日最低气温首次跌破冰点，仅有-2℃1；乌鲁木齐16日最高气温将在下半年首次跌破10℃1；西宁17日最低气温也将跌破冰点1。相比之下，广州地区未来一周最高气温仍将维持在30℃以上1。
Southern China is experiencing significant rainfall accompanied by severe convective weather today and tomorrow as warm and cold air masses converge, with some areas in Hunan and Jiangxi facing the risk of torrential downpours 1. Beginning tomorrow, a new cold air system will move across the country from west to east, triggering a dramatic temperature decline 1. Most regions north of the Yangtze River will see temperatures drop to their lowest levels in six months, while numerous northeastern cities will experience their first sub-zero readings of the season 1.
The cold front's impact will be particularly severe in several key regions. Harbin has already dipped to minus 2 degrees Celsius today (October 14), marking the first time in the second half of the year that temperatures have fallen below freezing 1. By October 16, Urumqi's high temperature is forecast to drop below 10 degrees Celsius for the first time in the latter half of the year, while Xining's low on October 17 is expected to fall below freezing 1. In contrast, Guangzhou will maintain maximum temperatures above 30 degrees Celsius throughout the coming week 1.
The current weather system affecting southern regions is producing substantial precipitation across multiple provinces. Central and northern Guizhou, central and southern Chongqing, southern and eastern Hubei, northern Hunan, northern Jiangxi, southern Anhui, southwestern Zhejiang, and parts of Yunnan are all experiencing moderate to heavy rainfall, with isolated areas receiving torrential precipitation 1. The Jianghuai and southern Jiangnan regions are additionally contending with thunderstorms, short-duration intense rainfall, and other severe convective phenomena 1.
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