1 30 What's the weather like in April?

Judging from the overall meteorological conditions, April is generally beneficial to agricultural production. The national average temperature in April was 1 1.2 degrees Celsius, which was higher than normal 1.2 degrees Celsius. There is more precipitation in the east and less precipitation in the west.

Jiao said that in terms of temperature distribution, the main high temperature distribution area is in the northeast of China. The temperature in Inner Mongolia and Northeast China is 2-4 degrees higher than normal, and the temperature in the west is relatively low. The temperature is high in the south, especially in the southwest. Judging from the monthly precipitation, the precipitation in April is just close to the average precipitation for many years.

From the overall precipitation distribution, there are more in the east and less in the west, and less in the northeast and northwest of Inner Mongolia. There is 100-200mm precipitation in most parts of the south of the Yangtze River. The precipitation in North China and Huanghuai is more than normal 1 times. Heilongjiang and northeastern Inner Mongolia are relatively few areas with high forest fire risk rating. The average precipitation in North China this year is 55.5 mm, which is more than normal.

Judging from the overall meteorological conditions, April is generally beneficial to agricultural production. In the northern region, two obvious precipitation improved soil moisture. The south is also better. Frost appeared in the northwest. In addition, the rainy weather in the middle and lower reaches of the Yangtze River has a negative impact on crop growth.

The main weather events in January and April were mainly heavy rains in Jianghuai and South China. In April, the distribution of extreme events was generally stable, and the weather events were abnormal: Typhoon 1 landed in April this year, and there was a small-scale drought in other yellow areas. In the middle and late April, there was a dusty weather in the west, a relatively obvious strong low temperature in the northwest and a strong rainstorm and strong convection in the south. The precipitation in Jianghuai and Huanghuai areas lasted from early April to mid-April, and some areas were affected. April 19 Water accumulated after heavy rain in Hubei.

Second, the abnormal event in April was the landing of typhoon raccoon in Hainan. According to historical data, typhoons landed in Hainan as early as 1929 1 month. Besides, raccoons are the first typhoons to land this year. Because typhoon 1929 is in winter. However, the history of typhoon landing in April after the flood season is relatively rare. We positioned it as the earliest typhoon that landed since the founding of the People's Republic of China.

Third, the northeast is hot and rainy, and the meteorological drought in southern Liaoning is serious. There was basically no precipitation in Northeast China from April 5 to 20, and the drought was serious. There are different degrees of drought in northern Heilongjiang and northeastern Inner Mongolia. Due to the influence of drought and low soil moisture, a large number of heat sources were found in northeast and southwest China through satellite remote sensing in April, and the fire prevention task was heavy in April. There was only one sandstorm in April, which was the least frequent year since 2000. The average number of times for many years is 6, and the dust weather in April this year is obviously less, which is related to more precipitation and less cold air activity in the northern region.

Another meteorological disaster is the low temperature disaster in Xinjiang, Gansu and Qinghai. This time, the cooling rate is relatively large, and the average temperature drops by 20 degrees Celsius, causing a low temperature disaster in the northwest.