How strong is the wind in the typhoon center?

The typhoon eye area is basically a sunny and partly cloudy area, with only a small amount of stratocumulus in the lower level. The air pressure in the center of the eye area is the lowest, and the wind speed is also very small, which is a breeze or still wind.

Reasons for formation:

The typhoon eye is produced because the wind in the typhoon blows counterclockwise, which makes the central air rotate, and the centrifugal force generated during the rotation is balanced with the wind blowing toward the center, thus forming a windless phenomenon in the range of dozens of kilometers in the center of the typhoon, and because of the phenomenon that the air sinks and heats up, the clouds disappear and the rain dissipates, thus becoming a typhoon eye.

Main forms:

The analysis of satellite remote sensing data shows that the eye areas of most typhoons will appear alternately in various forms; At the same time, the alternation of various forms often has a good correlation with the development and change of typhoons.

Generally speaking, when the intensity of tropical cyclone is high, there is no cloud or partial cloudy coverage in the eye area, and the eye area is mainly round, with highly developed peripheral eye walls and symmetrical structure; When the intensity is weak, the eye area is blurred, which may be covered by high and thick convective clouds, and the eye area under the clouds is often polygonal; For a weak or dissipating typhoon, the eye area is mostly open because of the incomplete structure of the eye wall; However, the characteristics of the windless eye area usually mean that the cyclone is about to form or disappear soon, and its intensity is very limited. However, due to the relatively limited maintenance time, quasi-circular and concentric structures are regarded as transitional eye areas, and their appearance is mostly related to the obvious changes of strength and path.