Why is it always hot before a typhoon comes?

Before every typhoon comes, the weather will be very hot, because:

1. Hot weather will cause air to rise, which will cause low pressure on the ground. Because of the difference in air pressure between the two places, the high pressure will press to the low pressure, forming a horizontal air pressure gradient force, that is, wind.

2. At the same time, there is less air near the ground in the low pressure area, and the air saturation is reduced. Once saturated, water can't evaporate, so water can't evaporate and absorb heat.

The above factors combined to cause the weather to be very hot before the typhoon came.

Meteorological definition

The biggest difference between typhoon and hurricane is the difference in birthplace and activity area. Typhoons mainly refer to tropical cyclones generated and active in the northwest Pacific and the South China Sea, while hurricanes refer to tropical cyclones generated and active in the Middle East Pacific and the North Atlantic.

From the classification, typhoons with winds above 12 are divided into three grades, while hurricanes have more grades and higher upper limits. A first-class hurricane is equivalent to a typhoon or a strong typhoon, a second-class hurricane is equivalent to a strong typhoon, a third-class hurricane is equivalent to a strong typhoon or a super typhoon, and a fourth-class hurricane and a fifth-class hurricane are equivalent to a super strong typhoon.