Kyushu Space Wind Rating Chart
Wind level
Land surface object signs
Sea wave/wave height (m)
Quite wind speed
Km/h m/s0
Quiet, the smoke goes straight up.
Calm / 0.0less than 1
0 to 0.2
1
Smoke can indicate the direction of the wind.
Microwave peak without droplets / 0.11-5
0.3 to 1.5
2
The human face feels windy and the leaves move slightly.
Wavelet peak is not broken /0.26~11
1.6 to 3.3
3
The leaves and micro-techniques are shaking and the flag is unfolding.
Wavelet peak rupture / 0.612~19
3.4~5.4
4
Can blow up the ground dust and paper, the branchlets of the tree shake
Xiaolangbai foam peak /1.0
20~28
5.5 to 7.9
5
The leafy small tree sways, and there are wavelets in the inland waters.
Zhonglang Fenfeng Group/2.029~38
8.0~10.7
6
The big branches are shaking, the wires are screaming, and it is difficult to lift the umbrella.
Big waves to a droplet /3.039~49
10.8~13.8
7
The whole tree is shaken, and it is inconvenient to walk in the wind.
Breaking peak foam into a strip / 4.050~61
13.9~17. L
8
The twigs are broken, and people feel very resistant to moving forward.
Long waves have a spray / 5.562~74
17.2~20.7
9
The grass house was damaged and the branches were broken.
Wave peak rewind /7.075~88
20.8 to 24.4
10
Trees can be blown down, and general buildings are destroyed.
Waves rolling roaring / 9.089~102
24.5 to 28.4
11
Rarely on land, big trees can be blown down, and general buildings are severely damaged.
The peak is full of droplets / 11.5103~117
28.5~32.6
12
There are few on the land, and its destructive power is enormous.
Surfing the sky / 14.0118~133
32.7~36.9
13
134~149
37.0~41.4
14
150~166
41.5~46.1
15
167~183
46.2~50.9
16
184~201
51.0~56.0
17
202~220
56.1~61.2
*Note: The wind speed listed in this table refers to the wind speed value at 10 meters above the ground on the flat ground.
Typhoon and tropical storm
The low-pressure system that develops on the tropical ocean surface is called the tropical cyclone. Internationally, the intensity is determined and classified by the maximum wind force near its center:
Level 12 or above is called a typhoon;
The 10-11 level is a strong tropical storm;
Levels 8-9 are tropical storms;
Less than 8 is the tropical low pressure.
Low pressure trough and high pressure ridge
On the undulating high-altitude westerly airflow, the trough corresponds to the trough of low pressure, the warm and humid air in front of the trough is active, the rainy and snowy weather, the cold air control behind the trough, and the wind cooling weather; the peak corresponds to the high pressure ridge and the sky is clear.
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