China Weather Network News Rare snowfall in April! Recently, there has been a wide range of continuous rain and snow in many places in the north, with records in many places in Shanxi and Shaanxi, and some areas setting records for the latest snow. Snowfall adversely affects facilities, agriculture, economy, forestry and transportation. How strong is this snowfall? What are the impacts? Why is there such heavy snowfall in April? China Weather Network will interpret them for you one by one.
1. How strong is this snowfall process?
According to Zhang Juan, a meteorological analyst at China Weather Network, since April 4, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi and other places have seen snowfall or rain turning snow, among which heavy snowfall or even heavy snowfall has occurred in many places in Shanxi and Shaanxi, and the snow depth in many places has reached more than 20 cm, breaking the local record for the deepest snow cover in April.
Statistics show that on the morning of April 4, the snow depth of Zuoyun in Shanxi was 21 centimeters and the right jade was 24 centimeters, of which the right jade broke the record for the deepest snow cover since meteorological observation records began in 23, and Zuoyun broke the snow cover record in April. On the morning of the 1951nd, the snow depth in Xi County, Shanxi was 4 cm, Wuxiang 22 cm, Yushe 19 cm and Fenxi 15 cm, of which Fenxi broke the latest snow record; Yan'an, Shaanxi Province, has 13 centimeters of snow, the first time snow has appeared in late April. On the morning of the 15rd, Changzhi and Huguan, Shanxi both broke the local snow record and the latest snow record in late April. On the morning of the 10th, Shanxi Pingshun, Lucheng, Tunliu and Shangdang all set the record for the deepest snow in late April, and Shangdang, Lucheng and Tunliu set the latest snow record.
2. What is the impact of snowfall?
Rain and snow weather is beneficial to increase soil moisture, purify the air and reduce the meteorological level of forest fire risk. However, the snowfall in Shanxi, Shaanxi and other places was mainly wet snow, and the snow caused losses to agricultural greenhouses and other facilities and agriculture, some orchards were damaged against hail nets, tree branches were crushed by snow, and rain and snow combined with low temperatures were not conducive to economic forest fruit flowering and pollination, affecting fruit set. At the same time, rain and snow weather roads are slippery and visibility is reduced, which also adversely affects transportation and other aspects.
4. Why is there such strong snowfall in April?
According to Zhang Juan, the main reason for this heavy snowfall is that the force of cold air is strong enough, and many places in northern Shanxi have cooled by nearly 30 degrees Celsius in a day, which shows the power of cold air. Strong cold air combined with strong southerly warm and humid airflow, as well as easterly return flow to transport water vapor, forming a wide range of rain and snow weather during the intersection of cold and warm currents.
Why is the center of this heavy snowfall concentrated in Shanxi, Shaanxi and other places? Zhang Juan said that the formation of heavy snowfall centers is related to the local topographic conditions of Shanxi and Shaanxi, such as the Taihang Mountain in Shanxi provides certain lifting power conditions for local snowfall, while the higher altitude makes the temperature lower than that in the plains, which is more prone to snowfall.
4. How long will this round of rain and snow last?
There may be some light snow or sleet in eastern Qinghai, southern Gansu, northern Shanxi, northern Hebei, and central and eastern Inner Mongolia today. Starting tomorrow, the rain and snow in Shanxi and other places will basically stop, and it is recommended that farmers spray nutrient solution on frozen orchards in time after the rain and snow process, add sucrose to supplement tree nutrition, and reduce the impact of frost damage. (China Weather Network)