Why is the weather so hot before a typhoon comes?

A typhoon is essentially a low-pressure center. Before a typhoon comes, the local air pressure will be affected by the typhoon and drop in advance. When the external atmospheric pressure drops, the air pressure in the human body will be higher, so people will Feeling "boring". Because the wind and rain of the typhoon have not yet arrived, the temperature is still at a high level, so the overall feeling is "sultry".

Related instructions

The formation of a typhoon requires the following conditions: sea surface water temperature above 26.5°C; a certain initial disturbance of positive vorticity; vertical shear of the ambient wind Get smaller; low pressure or cloud disturbance at least a few latitudes from the equator. Since people today do not fully understand the formation of typhoons, the above listed are only the necessary conditions for the formation of typhoons.

The initial stage of a typhoon is a tropical low pressure. It usually takes about 2 days to go from the initial low-pressure circulation to the maximum average wind force reaching level 8 near the center. Some may take three or four days, and some may only take a few hours. During the development stage, typhoons continue to absorb energy until the central air pressure reaches the minimum value and the wind speed reaches the maximum value. After a typhoon lands on land, it will quickly weaken and die due to the combined effects of ground friction and insufficient energy supply.