Why is the snowfall in the south more obvious than that in the north in this cold wave?

Why is the snowfall in the south more obvious than that in the north in this cold wave?

Why is the snowfall in the south more obvious than that in the north in this cold wave? With the advance and intensification of rainfall, the snow in the south exceeded 10 cm in June 5438+February. During the day on the 28th, the temperature in the south will gradually rise. Why is snowfall more obvious in the south than in the north?

Why is the snowfall in the south more obvious than that in the north in this cold wave? On February 25, the cold wave of the finale began to invade most parts of the south. This morning 10, the Central Meteorological Observatory once issued a blue warning of heavy snow, saying that it is expected that there will be heavy snow in parts of central Hunan and eastern Guizhou the next day (27th) 14 to 14.

On the social platform, the snow in Changsha was once on the hot search list.

So why is the snowfall in the south more obvious than that in the north in this cold wave? How did the South join the "Snowfall Group Chat"?

In this regard, central weather bureau experts said, simply put, this is due to the process and configuration of the weather system.

Experts further pointed out that the cold wave went south in a big way from the beginning, and there was no obvious intersection of warm and humid air currents in the north, so the snowfall was relatively weak and the process was not obvious. However, after the cold air went south, it encountered a stationary front and the cold air went south. Warm and humid air currents brought by the south and the east climb the hills to form convection and condense into rain. This configuration is prone to rain and snow.

At the same time, there is indeed a warm and humid airflow coming from the southwest at high altitude, forming slices in the middle and bottom layers. Slicing line is prone to rain and cold air, which turns into snow.

In a word, the rain and snow process in the south is more obvious than that in the north due to the combined action of water vapor condition, warm and humid airflow rising condition and cold air condition.

It is worth mentioning that the Central Meteorological Observatory lifted the blue warning of cold wave on February 26th 10, but issued the low-temperature warning for the first time since winter, saying that it will continue to rain in the south in the next three days, and the temperature will remain in a low state ~ especially in central and eastern Guizhou, western Hunan, northwestern Guangxi and other places, the temperature is more than 7℃ lower than normal.

The temperature in the south will rise slowly from the 27th, and it is expected that the temperature will rise to normal around the 30th.

Why is the snowfall in the south more obvious than that in the north in this cold wave? 2. The influence of cold wave continues, and the snowfall continues to push south. On the morning of 26th, the forefront of the snow line advanced to the first line from central Guizhou to central Hunan, and the first snow fell in Guiyang and Changsha this winter!

With the advancing and strengthening of the rain, the snow in Huaihua on 26th 17 and 2 1 cm broke the local record of 65,438+February, which is also the third deepest snow in the local observation history! At the same time, Guizhou Jiangkou 17cm and Hunan Fenghuang 16cm 14cm also broke the local snow record of 65438+February! In many places in the south, the snow in 65438+February exceeded 10 cm, which is rare in history.

The cold wave is so severe, when will it end?

Starting from the daytime on the 28th, the temperature in the south will gradually rise, which means that the south will be frozen for at least 2 days! On the morning of the 27th, the temperature in the south will once again hit a new low! The highest temperatures in Guiyang and Changsha will also drop below freezing point, while the highest temperatures in many places in South China will drop to single digits. Moreover, due to the strong wind, rain and snow weather, the effect of wind, cold, dampness and cold is obvious in the south, which leads to a lower somatosensory temperature, even a little colder than that in the north, especially in Chongqing, Hunan and Guizhou, far lower than that in the North China Plain.

However, after the 28th, the south will gradually join the warming ranks, and the temperature will gradually return to the normal level throughout the year. In 2-3 days, the temperature in many places in the south will rise by about 10 degrees Celsius, and the feeling will change obviously.

The temperature rises earlier in the north than in the south, and the temperature will start to rise obviously on the 27th. However, the warming in the north will not last forever. There will be cold air affecting Northeast China and North China on the 29th. With the arrival of this cold air, the northeast has just returned to normal, and the temperature will turn lower again. Temperature fluctuation will be the normal state in the north in the near future.

It seems that the influence of temperature will not last long. What about the rainy and snowy weather?

On the whole, Hunan, Guizhou and other places are the most affected places in the cold wave process, so special attention should be paid to prevent the adverse effects on traffic, electricity, urban operation and human health. Although the snowfall in the south will basically weaken and stop next Tuesday, the cloudy state in Chongqing, Guizhou, Hunan and Guangxi will remain until the end of the month, and it may clear up completely in early 10.

Moreover, in places like Chongqing, Guizhou, Hunan and Hubei, the impact will not end in the near future.

Because the low temperature continues, and the rain and snow may last about 1 day, especially for Hunan and Guizhou, the rain and snow are muddy, the ground is slippery, and even the ground is mixed with snow and rain. It lasts about 4 days, and the situation will be completely improved until 1 starts.

The influence of Hunan and Guizhou is not over yet! Local friends should pay attention to safety when traveling, and avoid too fast, sharp turns and sudden braking.

Why is the snowfall in the south more obvious than that in the north in this cold wave? 3 According to the website of the Central Meteorological Observatory, the Central Meteorological Observatory continued to issue a blue warning of low temperature and a yellow warning of strong wind at sea at 06: 00 on February 27, 65438, and the southern part of China continued to have low temperature; 65438+A heavy snowfall occurred on the Qinghai-Tibet Plateau from February 28th to 30th. There are small to medium snows in parts of southern Qinghai and most parts of Tibet, including heavy snowstorms and local blizzards in southern Tibet.

Persistent low temperature weather in southern China

Affected by the remnants of the cold wave, the temperature in most parts of South China rose slowly and remained cloudy with few photos. It is estimated that from 27th to 28th, the daily average temperature in Guizhou, Hunan, Guangxi, northwestern Guangdong, southeastern Chongqing, southeastern Jiangsu, Shanghai and eastern Zhejiang will be about 5℃ lower than that in the same period in history, and the temperature in some areas of central and eastern Guizhou, western Hunan and northwestern Guangxi can be as low as 7℃. There are 4 ~ 6 northerly winds and 7 ~ 8 gusts along the coast of South China. At 06: 00 on February 27, 65438, the Central Meteorological Observatory continued to issue a blue warning of low temperature and a yellow warning of strong wind at sea.

Figure 1 Abnormal average temperature (February 27th18: 00-February 28th at 20: 00)

Figure 2 National Minimum Temperature Forecast Chart (February 27th 18: 00-February 28th at 20: 00)

There is heavy snow in southern Tibet.

Affected by the south branch trough, a heavy snowfall occurred on the Qinghai-Tibet Plateau from February 28th to 30th, 65438. There are small to medium snows in parts of southern Qinghai and most parts of Tibet, among which there are heavy snowstorms and local blizzards in southern Tibet.

Specific weather forecast for the next three days

65438+From 08: 00 on February 27 to 08: 00 on February 28, there were small to medium snow or sleet in parts of eastern and southern Tibet, eastern Guizhou, southeastern Chongqing, southwestern Hubei and northwestern Hunan. There is light rain in parts of eastern and southern Yunnan, southern Hunan and most of southern China. There are 4 ~ 6 winds along the coast of South China (see Figure 3).

65438+From 08: 00 on February 28th to 08: 00 on February 29th, there were small to medium snow or sleet in parts of northeastern Inner Mongolia, northern Heilongjiang, southeastern Tibet and western China, among which there were heavy snowstorms in parts of southern Tibet, with local heavy snowstorms (20-28mm). There is light rain in parts of south-central Jiangnan, south-central Guizhou, southwest Yunnan, central and eastern Guangxi, northern Guangdong, Hainan Island and eastern Taiwan Province Island. There are 4 ~ 6 winds along the coast of South China (see Figure 4).

Figure 4 National Precipitation Forecast Chart (February 28th 18: 00-February 29th, 08: 00)

65438+From 08: 00 on February 29 to 08: 00 on February 30, there were small to medium snows in parts of eastern Jilin, most of Tibet and southern Qinghai, among which there were heavy snowstorms in parts of southern Tibet, with local heavy snowstorms (20 ~ 22 mm). There is light rain in parts of southeastern Tibet, southwestern Guangxi, Hainan Island and Taiwan Province Island. There are 4 ~ 5 winds in parts of southeastern Inner Mongolia and coastal areas of South China.