In the early morning of February 2, friends in northern Wuhan found that wherever the rain fell in the sky, it froze. Ice droplets, ice hangings and even ice crusts soon formed on cars and trees, as was the case in Hefei. And this is one of the most troublesome weather - freezing rain. At the same time as the freezing rain in the north of Wuhan, as well as in northern Hubei, central Anhui and other places, the strongest freezing rain this year is still coming.
武汉冻雨@中气爱摄影群tiger
As we said in the last episode, freezing rain is caused by warm and moist air currents that penetrate into the cold air mass like a wedge, causing an inversion layer. During the day on February 2, cold air masses were accumulating. On the one hand, the cooling zone went deep into the south of the Yangtze River, crossed the Wuyi Mountains, and arrived in the north of South China, except for the central and southern parts of South China and Yunnan, the south has generally cooled down, and the cold is stronger than expected, Wuhan city has been below 1 degree all day, Nanjing is around 1 degree.
Wuhan Freezing Rain @ Zhongqi Love Photography Group Liuzhou
But on the other hand, the subtropical high is coming north to Hainan and approaching the coast of Guangdong, the temperature along the coast of South China is still very high, the humidity in Hainan, Guangxi and Guangdong has begun to decline, blue skies and white clouds have appeared in some areas, and there are signs of relief in the south, and even the return to the south has ended in some places. In addition, the warm and humid air flow of the high-rise surged to the north, and it snowed again in Henan, Shanxi, northern Shaanxi and even Gansu, where the snow had stopped.
On February 2nd, Guangzhou @ Zhongqi Love Photography Group @cl super monomer
Next, the cold and warm air will have a decisive battle to put an end to these bad weather before the Chinese New Year. But since it is a decisive battle, the weather will inevitably be more intense. The first is that as the middle reaches of the Yangtze River get colder and colder, the temperature and surface temperature are getting lower and lower, and from the night of February 2 to the night of February 3, the freezing rain in most of Hubei and western Hunan will enter the strongest period. At around 9:30 p.m. on February 2, the temperature, grass temperature, and ground temperature at Wuhan National Station had all dropped below 0 degrees.
Wuhan Freezing Rain @ Zhongqi Love Photography Group Morakot
On February 2, only the roof and branches of the car were icy, but the road surface was not icy in the urban area of Wuhan, and some roads may be frozen on February 3. Friends in Wuhan on February 3, as well as friends in other freezing rain areas, should try to minimize travel, especially the elderly. If you must travel, take anti-slip and anti-freeze measures and be extremely cautious.
Wuhan Freezing Rain @ Zhongqi Love Photography Group Morakot
Second, as the cold air moves south slightly deeper than expected, especially in southeast China, there will be more snow in the south, and more places will experience blizzards or even heavy snowfalls. For example, Hefei in Anhui Province, Nanjing in Jiangsu Province, Yangzhou, Huai'an, Yancheng and other places were not originally in the snowfall area, but now they are classified as snowfall areas.
In Hubei and Hunan, it is possible that the cold air will completely disperse the mid-temperature inversion, so from the night of February 3 to February 4, the central and northern parts of the freezing rain area, that is, most of Hubei and the central and northern parts of Hunan, including Wuhan, may turn from freezing rain to snow. From the night of February 3 to February 4, a blizzard belt will form in the south that crosses seven provincial-level administrative regions, including Jiangsu, Anhui, southern Henan, Hubei, Hunan, eastern Chongqing, and northeastern Guizhou.
Snow in Luoyang @ Zhongqi Love Photography Group Luoyang, Henan
Third, at the end of the fierce battle between the warm and cold air, late on February 4, the warm and cold air will collide to form a storm, which is the Jianghuai cyclone. This cyclone will push more water vapor northward, so it will snow again in many places in the north from February 4 to 5, including Henan, Shandong, Beijing-Tianjin-Hebei, and even Shaanxi, Gansu, Ningbo and Inner Mongolia, with Shandong, which is close to the cyclone center, likely to experience a wide range of heavy snowfall.
It is precisely because the scope of snow will be expanded, the intensity will be enhanced, and the blizzard will go deep into the south, that the Central Meteorological Observatory upgraded and issued an orange warning for bliash on the afternoon of February 2, which is the first time we have experienced a double orange warning for blizzard freezing since the establishment of the early warning system. As the freezing and blizzard continue to intensify and snow will form in the south, the cold air will be boosted, and it is expected to cross the Nanling Ridge around February 3, when the return to the south of most of South China is expected to end early.
However, the end of the return to the south does not mean the end of the wetness, and from February 3, southern China will usher in a major cooling, and strong convection may occur, and then turn to continuous wet and cold weather, and the temperature will be lower and lower until the Chinese New Year's Eve. Although most of the mainland will turn into sunny and cold weather on the first day of the Chinese New Year's Eve and the first day of the new year, the wave of rain and snow before the Chinese New Year's Eve has a strengthening trend, from the evening of February 5 to February 8, there is the possibility of heavy snow in eastern Guizhou and Hunan, and the possibility of snow in southern Hubei, southern Anhui, southwestern Jiangsu and northern Zhejiang also appears, please pay close attention to the weather for friends who want to travel, from the evening of February 5 to February 8, if you want to pass through Guizhou, Hunan, In the southern part of Hubei, you need to prepare enough food to wear and be prepared.