There are clear distinctions between heavy rains in our country's meteorology. Why is the weather so hot before a heavy rain?
When it rains heavily, the clouds are very low, covering the air like a quilt. If the heat and moisture in the air cannot escape, the air will be stuffy. In addition, the human body does not like sweat to dry out, and the sweat cannot escape from the body quickly, so it feels very stuffy.
Due to the abundant water vapor and high humidity in summer, when the temperature is not too high (relatively speaking), people will feel sultry, just like in a steamer. This kind of weather is called sultry high temperature. It's also called "Sauna Day" because when this weather happens, people feel like they're in a sauna. It often occurs in my country's coastal areas, the middle and lower reaches of the Yangtze River, and South China.
It will be very hot before it rains. Relief measures:
When the weather is hot and difficult, if conditions permit, you can wipe your body with a hot wet towel or take a hot bath. Taking a hot bath will help your body perspire and dissipate heat. Of course, cold showers can also lower body temperature, but the effect is short-lived. The principle of human body perspiration is that the body temperature is higher than the body surface temperature. When the outside world is very hot and humid, sweat cannot be discharged and it is easy to feel stuffy. If you want to sweat, you can run, exercise, or drink hot tea, hot water, or hot soup to make your body sweat.
Why is it so hot before a heavy rain
Hazards of heavy rain
Heavy rain is one of the major meteorological disasters in my country. Prolonged heavy rains may produce stagnant water or runoff that inundates low-lying areas, causing flooding. According to statistics from 1950 to 1999, the average annual flood disaster area in my country is 9.424 million hectares, and the affected farmland area in severe flood years can reach more than 13 million hectares.
Heavy rain is a serious and bad weather. Continuous heavy rains or heavy rains in a certain area often lead to flash floods, reservoir dam breaches, river flooding, house collapse, farmland being submerged, and transportation and communication interruptions, bringing harm to the national economy and people's lives. life and property. serious injury. Heavy rains, especially large-scale continuous heavy rains and concentrated heavy rains, not only affect industrial and agricultural production, but may also endanger people's lives and cause serious economic losses.
Four major characteristics of summer heavy rains in my country
my country is a country with a lot of heavy rains. One of the main reasons is that every summer is heavily influenced by the East Asian summer monsoon. The occurrence and prevalence of summer storms coincide with my country's rainy season or flood season, that is, the season with frequent heavy rains. Monsoon air brings abundant water vapor and unstable air from the sea surface, which is one of the key reasons for heavy rains.
As summer storms develop, prevail and advance northward quickly or slowly, my country's main rain belt is also moving northward, successively affecting South China, Jianghuai and North China. Time focus. Heavy rains in my country mainly occur during the flood season from May to August, with the peak period concentrated from late June to early July, which is the famous plum rainy season in East Asia. Heavy rains in North China are concentrated from late July to early August, that is, "seven rains and eight rains".