In the past two days, with the strongest and deepest cold air rushing into the southern region this year, it has brought cold attacks to many places again - such as Fujian, Guangdong, on the southern coast, which has ushered in the coldest late February since the same period since 1996, and even the northern part of Fujian has also snowed extensively. On the afternoon of February 22, from the cloud map of the Fengyun-4 high-definition visible light satellite, the abundant water vapor in the south of the mainland continued to be entangled with cold air, and a wide range of cold clouds still hung over many southern provinces.
However, today, the rain and snow dividing line of the mainland is obviously raised to the north, and the western end comes to the Yunnan-Guizhou Plateau, such as Yunnan, as a dry and hot river valley, Yunnan Yuanmou, which has rarely seen snow for more than 30 years, and the "Spring City" Kunming was once full of snow, and there was obvious snow in the urban area.
The snow in Kunming comes from Weibo netizen @Bran Epic
In addition to the Yunnan-Guizhou Plateau, the snow in the southern part of the mainland today has also spread rapidly in Jiangnan, Hunan, Jiangxi and other places, especially Hunan, which has become one of the snowfall centers in the south of the mainland today - many places in Hunan began to snow from this morning, and by the afternoon, the water vapor and cold air were further in place, and the snow was getting heavier and heavier. For example, in Shaoyang, Hunan Province, monitoring data shows that the cumulative snowfall in Shaoyang in 24 hours has reached the level of exceptionally heavy snowfall.
In addition to Shaoyang, the snowfall at Shaoyang and Xiangtan in Hunan prefecture-level cities has also reached the level of exceptionally heavy snowfall, and Changsha, Zhuzhou and Huaihua have been blizzards. Therefore, Shaoyang, Huaihua, Zhuzhou and other places in Hunan have issued the highest level of blizzard red warning today. Due to the fierce snow, although the ground temperature is slightly higher, the snow efficiency is not so high, but the depth of snow is also quite amazing, the test book shows that the local snow depth in Shaoyang reached 26 cm, the Hongjiang River 25 cm, Huaihua 21 cm, have refreshed this winter record. This winter, Hunan has experienced many rounds of heavy snowfall, almost the field must arrive, the next time down.
At the same time, many netizens also noticed that in the heavy snow in some parts of the south, it was even accompanied by thunder bursts - the ground flash monitoring map of the Central Meteorological Observatory showed that from February 21 to February 22, many places in Hunan Guizhou, Yunnan and Sichuan had dense lightning symbols, and some areas snowed in lightning and thunder. Then some netizens have to ask: Is this thunder and snow normal?
When it snows, there is very little thunder, this is because when it snows, the general warm and wet water vapor is not too strong, and the atmospheric energy is insufficient, but in today's south, Hunan and other places, the extraordinarily large blizzard shows that the warm and humid water vapor is extremely strong, under such conditions, the atmospheric energy in some areas is sufficient to appear snow and thunder, of course, this does not mean that it is not normal, it is one of the characteristics of the recent warm and humid water vapor in the south of the mainland. Of course, in the case of strong warm and humid water vapor, the snow in the south is wet snow, the snowflakes are large and heavy, and the snow efficiency is relatively low. The good news is that after this snowfall, many places in the south are expected to usher in a long-lost sunny day, but before it happens again, the snow belt is advancing towards Jiangxi, Zhejiang, Anhui and other places, and the local area must also be prepared.