How strong is the 7-8 wind?

Level 7 wind is Beaufort wind with a wind speed of13.9-17.1m/s, and level 8 wind refers to Beaufort wind with a wind speed of 17.2-20.7m/s, which is equivalent to 62-74 km/h.7 polar wind. Grade 8 wind is called gale, with a wind speed of 62-74(km/h), which can break branches and make people walk against the wind with great resistance.

Gail:

Strong wind, strong wind. At present, meteorology refers to 8 winds. When the wind is strong, the branches on the land break, and walking in the wind feels great resistance. On the ocean, ships near the port can't stay outside. It is equivalent to the wind speed 17.2-20.7 m/s. The disease "gale" and the beast "gale" have other explanations. See other meaning for details. Strong winds will damage ground facilities and buildings; The strong wind at sea affects navigation, offshore construction and fishing, which is very harmful and is disastrous weather. There are many weather systems that produce strong winds, such as cold front, thunderstorm, squall line and cyclone. The strong wind of tropical storm appears in the strong pressure gradient area of vortex and rotates counterclockwise; The cold front gale is located after the front crossing; Thunderstorms and squall lines appear in the airflow from the descending airflow, and they are dragged to the near ground by thunderstorms when they cross the boundary. The narrow tube effect of topography can increase the wind speed and make some areas become windy areas, such as Alashankou in northern Xinjiang and Taiwan Province Strait.