What bad weather affects flights?

weather Such as fog, thunderstorm, storm, runway snow, icing, low visibility, etc. , are bad weather that will endanger flight safety. But from the passenger's point of view, bad weather means that there is strong wind, heavy rain, fog or thunderstorm in our airport, and the plane may not be able to take off and land and the flight will be delayed. This one-sided understanding has caused many misunderstandings about civil aviation. When there are delays caused by frequent weather, individual passengers think that civil aviation is cheating. In fact, the simple word "weather reason" actually contains many situations: the weather conditions at the departure airport are not suitable for take-off; The weather conditions at the destination airport are not suitable for landing; The meteorological conditions of flight routes are not suitable for flying over and so on. In order to ensure flight safety, there are many meteorological standards that meet the requirements of flight, take-off and landing. Firstly, this paper introduces the place where weather conditions affect a flight, 1, and the weather conditions at the departure airport (visibility, low-level clouds, thunderstorm area, strong crosswind). 2. Weather conditions at the destination airport (visibility, low-level clouds, thunderstorm areas, strong crosswinds); 3. Meteorological conditions on the flight route (high-altitude thunderstorm area); 4. Unit status (technical level of the unit, analysis and grasp of current weather and trends, and professional decision-making) 5. Aircraft status (under the premise of safety, due to the safety standards of meteorological conditions and the failure of some airborne equipment, the aircraft is not suitable for flying in this weather condition) 6. Subsequent situations caused by bad weather (mostly damage to airport navigation facilities and substandard runway, such as icing and serious water accumulation). Due to the above weather conditions, it often appears: 1, "The city where the destination airport is located has good weather conditions and good visibility. Why is it still delayed because of the weather? " In fact, the good weather in the city where the destination airport is located does not mean that the airport is suitable for plane landing. Covered near the airport take-off and landing passage is a low cloud and thunderstorm area, which is a common factor leading to this delay.