202 1 will it be cold after Grain Rain? Will it get hot after Grain Rain?

202 1 will it be cold after Grain Rain? Will it get hot after Grain Rain?

Before and after Grain Rain, the temperature will rise greatly, and it will not be cold, but it depends on the weather forecast of your place.

As we all know, Grain Rain is the last solar term in spring, and it is also a watershed for the official temperature rise. After Grain Rain, the temperature will get higher and higher. After the solar term in Grain Rain, rainfall increased, and rain gave birth to hundreds of valleys. With sufficient and timely rainfall, cereal crops thrive. In the southern region where the grain is abundant, "when the flowers fall, the cuckoo cries at night, the peony blooms and the cherry is ripe." The natural scenery tells people that it is late spring. At this time, the temperature in the south rises rapidly. Generally, in late April, except for parts of northern and western South China, the average temperature has reached 20℃ to 22℃, which is more than 2℃ higher than that in mid-April.

In Grain Rain, the weather is mainly warm, and the temperature is basically stable at around 20.

Many people have doubts about the temperature before and after Grain Rain, but according to previous years, except in the north and west, it reaches 20℃ to 22℃ every time, which is more than 2℃ higher than that in the central part. In the eastern part of South China, there is often a high temperature above 30 for a day or two, which makes people feel very hot. The low-altitude valley area has entered summer.

The solar terms in Grain Rain are in late spring, and the temperature rises rapidly during the day, but the temperature difference between day and night is large. Therefore, if you want to travel during this period, I suggest you take an extra coat to keep out the cold. In addition, after the solar term in Grain Rain, the rainfall increased and the humidity in the air gradually increased. At this time, we should follow the changes of natural solar terms and take care of the climate characteristics. At the same time, the weather is getting warmer and outdoor activities are increasing, but at this time catkins and catkins are flying all over the sky. Friends with allergic constitution should pay attention to preventing hay fever, allergic rhinitis and allergic asthma. You can also wash your nose and rub your nose wings with cold water every morning and evening, which can improve the blood circulation of nasal mucosa and help relieve symptoms of allergic rhinitis such as nasal congestion and sneezing.

Climatic characteristics of Grain Rain;

aeolian sand

According to the 24 solar terms, Grain Rain is the last solar term in spring. Grain Rain in late spring means that spring will end and summer will come. The large-scale invasion of cold air into the south is rare, but the cold air activities affecting the north will not stop.

From the end of April to the beginning of May, the temperature is much higher than that in March, and the soil is dry and loose. The air layer is unstable, the high-altitude wind drops, the frontal cyclone is active, and the windy and dusty weather caused by * * * is more common.

During Grain Rain 1993, 1995, 1998 and 2005, there were strong sandstorms and sandstorms. Among them, the black wind occurred in Jinchang, Gansu on May 5, 1993. The instantaneous maximum wind speed reaches 34m/s( 12), and the visibility drops sharply to zero. The sandstorm wall formed by aeolian sand is as high as 300-400 meters, and has a three-layer structure. Each layer has a spherical dust ball rolling, the bottom layer is black, and the middle and upper parts are red and yellow, once an hour. It caused heavy casualties and economic losses, and it is still creepy.

A wide range of floating dust weather, dark sky and falling yellow dust have eclipsed the poet's pictures of grass growing, flowers blooming and spring.

spring drought

Huaihe river basin is a transitional zone between the spring rain area in the south of the Yangtze River and the spring drought area in the north. From the north of the Huaihe River in Qinling Mountains, the spring rain dropped sharply.

As the saying goes, "Qingming Grain Rain is often short of rain", which means that during these two solar terms, there is a shortage of rain. During Grain Rain, people in Hainan Island, western Sichuan, western Guangxi, northwest China and north China are more eager for rain. Generally speaking, there are many sunny days, strong sunshine, large evaporation, windy sand and dry air, so the rain is more expensive at this time. Winter wheat, rape and other overwintering crops need rain when they enter maturity. Millet, corn, sorghum, cotton and vegetables sown in spring also need rain to take root and grow sturdily in Miao Zhuang. At this time, it is equivalent to planting food when it rains!

If there is little snowfall in winter, it is easy to get dry. It is very important to take measures such as water-saving irrigation and artificial precipitation enhancement in areas with severe drought in September once every ten years.

Spring drought is also an accomplice of forest and grass fires, which can be said to be a key stage to strengthen forest fire monitoring and fire prevention propaganda in forest areas.

Strong convective weather

Generally speaking, April-August is the peak of strong convective weather in a year. In May, severe weather such as thunderstorms, hail, strong winds and tornadoes will increase significantly in many areas in the south. Lightning protection, hail suppression and wind protection are put on the agenda.

rains cats and dogs

In the middle and lower reaches of the Yangtze River and the south of the Yangtze River in China, it often begins to rain obviously, especially in South China. Once cold air meets warm and humid air, it often forms a long rainy day, and it has entered the first flood season of the year. Strong convective weather wrapped in clouds and rain will not only bring disasters such as hail and thunderstorm, but also be accompanied by short-term, local rainstorm or torrential rain. 24-hour rainfall can reach more than 300 or 400 mm, resulting in river flooding and serious waterlogging, and long-term heavy rain will also lead to mudslides, landslides and other disasters.