On March 4, a new wave of cold air has been shipped, and as it moves eastward and southward, the recent warming process in the central and eastern parts will be blocked. This round of cold air comes and goes, belonging to the "flash mob" players, but it has a wide range of influence, not only to 25 provinces to create cooling, but also to bring a wide range of rain and snow weather, the public should pay attention to traffic safety when going out, and at the same time pay attention to temperature changes, add clothes in time, and stay away from the risk of colds.
"Flash" cold air swept through the central and eastern regions, and more than 25 provinces will welcome a cooling
On the 4th, with the delivery of a new wave of cold air, the warming process in the central and eastern parts pressed the "pause button". Wang Weiyue, a meteorological analyst at China Weather Network, said that although the intensity of the cold air is not strong, it has a wide range of influence, and the cooling coverage will exceed 25 provinces, but the cold air comes and goes in a hurry, which is a "flash mob" player, and the temperature in many places fluctuates like a roller coaster.
From the perspective of the cooling process, from the 5th to the 6th, the temperature north of the Yangtze River will generally drop to the recent low, and the temperature in most areas will be lower than that of the same period in normal years; The temperature in the south of the Yangtze River will bottom out around the 6th to 7th, and the temperature will fall back to the normal level or low state.
In the process of the cold air, the most obvious cooling is in the eastern part of the Yangtze River, the central and western parts of South China, and the cumulative cooling range will be close to 10. These places have warmed up sharply in the early stage, leaving more room for cooling.
Widespread rain and snow hit the core precipitation period from the 4th to the 5th
In addition to cooling, affected by this round of cold air, from the 4th to the 6th, the central and eastern parts will also usher in a wide range of rain and snow, of which the 4th to 5th is the core period of precipitation, and there are heavy to heavy rains in parts of southern Jianghuai and northeast Jiangnan.
On the 4th, the rain and snow weather gradually spread, with light rain and snow in North China and Northwest China, and heavy rain in Anhui, Jiangxi, Zhejiang and other places. Wang Weiyue introduced that due to the warm and humid water vapor transport and the development of the low-level shear system, the convection is strong, and many places in the south of the Yangtze River are accompanied by strong convective weather such as thunderstorms or short-term heavy precipitation while rainfall.
On the 5th, with the rapid southward movement of cold air, the snowfall range in the north will gradually shrink, and the rainfall intensity in the south will also weaken, but the rainfall will still be large, and there will still be light rain in most parts of the southern part of the Yangtze River, northern and eastern parts of South China.
It is expected that around the 7th, this round of rain and snow will tend to end, but there are more clouds in Jiangnan and other places, and it is still difficult to see the sun. Around the 8th, the rain in the south will increase again, and Guangxi, Guangdong and other places may be hit by heavy rainfall, so we need to keep an eye on it.
China Weather Network reminds that due to the influence of cold air, it will rain frequently in the south this week, and the temperature in Jiangxi, Hunan, Guizhou and other provinces will fluctuate greatly.