Windy weather refers to the weather conditions where the wind reaches several levels.

Wind is a phenomenon of air flow. In meteorology, it usually refers to the horizontal movement of air relative to the ground. It is a quantity with both magnitude and direction, expressed by wind direction and wind speed (or wind force). When the instantaneous wind speed is ≥ 17.2m/s, that is, when the wind reaches 8 or above, it is called gale. Strong winds above magnitude 8 pose a great threat to shipping and aerial work. Strong winds can occur when typhoons, cold air and strong convective weather occur. Strong winds can overturn ships, uproot trees, blow off fruits, break telephone poles, destroy houses and vehicles, and cause storm surges along the coast, fuelling fires and so on.

Strong wind, the wind force near the surface layer reaches Beaufort scale 8 (average wind speed 17.2 ~ 20.7 m/s) or above. According to China's meteorological observation service, the wind whose instantaneous wind speed reaches or exceeds 17m/s (or the wind speed reaches or exceeds Grade 8 visually) is regarded as strong wind. A windy day is called a windy day. In China's weather forecast business, Beaufort's 6 (the average wind speed is 10.8- 13.8 m/s) and above are defined as strong winds. 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 flowing 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.