Wind speed and angle fortune telling _ wind speed algorithm

How to look at wind speed and wind vane?

The wind vane is represented by wind vector and consists of wind stems and feathers. The wind stalk indicates the direction of the wind, and there are eight directions. The wind plume is represented by 3 or 4 short strokes and triangles, perpendicular to the right side of the wind pole end (northern hemisphere).

1-2 wind speed: 1 vertical bar 1 horizontal bar.

3-4 wind speed: 1 vertical bar 2 horizontal.

5-6 wind speed: 1 vertical bar 3 horizontal.

7-8 wind speed: 1 vertical bar 4 horizontal.

Wind speed above 8: 1 vertical bar 1 triangle looks like a small flag.

Extended data

Meteorology is generally divided into seventeen grades according to the magnitude of wind.

In the weather forecast, we often hear the expression "the north wind is 4 to 5", in which the wind refers to the average wind; If you hear the phrase "gust 7", gust refers to the wind with high and low speed, and the wind at this time refers to the high-speed wind.

In nature, the wind sometimes exceeds 12. For example, the central wind force of a strong typhoon or tornado may be much larger than the magnitude of 12, but the wind above the magnitude of 12 is rare, so the magnitude is generally not specified.

Baidu encyclopedia-wind vane