How do you see the wind direction and wind force in the weather symbol chart?

Wind direction and level in weather symbols: represented by wind vectors, composed of wind direction stalks and wind plumes.

Wind direction stalk: points out the direction of wind, which has 8 directions.

Wind plume: 3 or 4 dashes and triangles represent strong wind force, vertically on the right side of the end of the wind direction pole (Northern Hemisphere).

Level 1--2: 1 vertical bar 1 horizontal

Level 3--4: 1 vertical bar 2 horizontal

Level 5--6: 1 Vertical bar 3 horizontal

Level 7--8: 1 vertical bar 4 horizontal

Level 8 and above: 1 vertical bar 1 Triangle is like a small flag

Wind speed It is the forward speed of the wind. The greater the air pressure difference between two adjacent places, the faster the air flows, the greater the wind speed, and the greater the power of the wind. Therefore, wind force is usually used to express the size of the wind. The unit of wind speed is expressed in meters per second or kilometers per hour. When issuing weather forecasts, wind levels are mostly used.

Extended information:

Calculation of wind speed:

The distance the wind moves per second is the wind speed. The formula is "from all the way to nine, Multiply 2 and there are "at all levels." This means: from level one to level nine, multiply each level by 2 to roughly get the maximum speed of the wind. For example, the maximum speed of level 1 wind is 2 meters per second, level 2 wind is 4 meters per second, level 3 wind is 6 meters per second... and so on.

There are transition numbers between various levels of wind. For example, level 1 wind is 1-2 meters per second, level 2 wind is 2-4 meters per second, and level 3 wind is 4-6 meters per second. , and so on. If necessary, the wind force can also be converted into the corresponding wind speed, which is the distance of air flow per unit time, expressed in meters per second.

That is: the wind speed of Level 1 wind is equal to 1 meter/second, and the wind speed of Level 2 wind is equal to 2 meters/second. The wind level of Category 3 wind is increased by 1, and its wind speed is equal to 4 meters/second. For levels four to nine, subtract 2 and multiply by 3 from the level to get the wind speed of the corresponding level. The wind speed calculation for level 10 to level 12 is the same. The wind speed of level 10 is 27 meters/second. Add 4 to this to get the wind speed of level 11 of 31 meters/second. Add 4 to get the wind speed of level 12 of 35 meters/second.

Wind is represented by wind arrow, which is composed of wind direction stalk and wind feather.

Wind direction stalk: points out the direction of wind, which has 8 directions.

Wind plume: 3 or 4 dashes and triangles represent strong wind force, vertically on the right side of the end of the wind direction pole (Northern Hemisphere).

Tornado: It is a visible wind, but it brings great disaster to the ground.

Reference: Baidu Encyclopedia-Wind Power Level Table