How to understand the wind speed and direction in weather forecast?

To understand the symbols of wind direction and wind force in weather forecast, we need to know the meaning of wind vane and symbol. Represents a few winds. Use the wind feathers in the wind vector: long dashes and short dashes, or combine with the wind triangle to express the wind speed.

Symbol of wind direction and force: wind vector. The wind vector consists of wind stems (representing wind direction) and wind feathers (representing wind speed).

1. Wind axis: indicates the direction of the wind, and is indicated by a vertical line.

Wind direction is usually expressed in eight directions (east, southeast, south, southwest, west, northwest, north and northeast), and meteorological observation records use 16 directions (except northeast, northeast, southeast, southwest, southwest, northwest and northwest).

2. Wind feather: 3 or 4 short strokes and triangles indicate strong wind, perpendicular to the right side of the wind pole (northern hemisphere). The long dash represents 4m/s and the short dash represents 2m/s (the wind triangle represents 20m/s).

1- secondary: 1 vertical line 1 horizontal line

Grade 3-4: 1 vertical bar and 2 horizontal bars

Grade 5-6: 1 vertical bar 3 horizontal bar

Grade 7-8: 1 vertical bar 4 horizontal bar.

Above level 8: 1 vertical bar 1 triangle is like a small flag.

Extended data:

Wind power level:

Wind power refers to the strength of the wind blowing on an object. Generally speaking, according to various phenomena caused by wind blowing on objects on the ground or water surface, the magnitude of wind power is divided into 13, with the smallest being 0 and the largest being 12.

In 200 1 year, the China Meteorological Bureau issued the Regulations on Typhoon Operation and Service, which added typhoons above 12 to 17 and adopted Beaufort scale.

/typhoon kloc-0/2, set at 32.4-36.9 m/s; Grade 13 is 37.0-41.4m/s; 14 is 4 1.5-46. 1 m/s, 15 is 46.2-50.9 m/s, 16 is 51.0-56.

References:

Baidu Encyclopedia-Feng Ya

? Baidu encyclopedia-wind vane