2023-08-09 19:09:21
Affected by the southwest airflow in the south for several days, there were heavy thunderstorms from midnight to daytime, and many people went to work and were drowned. (File Photo/Photo by Luo Yongming) Regarding the recent heavy thunderstorms from midnight to daytime in the south, the meteorological fan special “Taiwan Typhoon Forum” posted a second-to-understand picture to explain it. (Photo/Taiwan Typhoon Forum)
The southwest wind blows violently, and heavy thunderstorms began to fall in the southern region in the early morning for the past few days. The intermittent heavy rainfall continued until noon, causing local people to be woken up by the thunder in the middle of the night, or drenched at work, which was miserable. Exactly why during this period, it always rains heavily in the south from midnight to noon. The meteorological fan special “Taiwan Typhoon Forum” uses a picture to let netizens understand in seconds.
Chen Bohong, CEO of the “Taiwan Typhoon Forum”, explained that this phenomenon is called “sea-land wind convergence rainfall”, and it is more likely to occur in summer when the southwest wind is prevalent, and it is most likely to occur in the southwest coastal areas. From noon to evening, the land heats up rapidly during the day, and the high temperature on the ground heats the air above, and the warm air floats upwards, forming an updraft. It is easy to develop convective cloud system, that is, “northwest rain”.
Long knowledge!Why is it raining heavily in the south from “midnight -> day” for several days? Meteorological experts post a picture and understand it instantly
From night to early morning, the land cools down quickly, while the sea cools down slowly, and the land air fills the gap after the warm air rises from the sea, forming a land breeze, meeting and converging with the southwest wind along the coast, and developing a convective cloud system. If the southwest wind is strong, the cloud The system will extend to the land.
Finally, from early morning to morning, the land wind and the southwest wind meet and reach a mature stage, and there is rain in the coastal areas. In the daytime, the land heats up rapidly again, and the land wind gradually weakens and turns into sea breeze convergence. Therefore, the rainfall decreases or even stops. , many people go to work, they will find that the roads and vehicles are wet, which is a unique weather pattern in summer.
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