Why is there a strong wind before the thunderstorm?

Because thunderstorms are caused by strong convection, the water vapor in the air condenses and accumulates like a cumulonimbus cloud in a mountain, and there is a strong upward convection in front of the cloud. Upward convection only occurs in the middle and high altitude and is not felt on the ground. However, in the thunderstorm area, there is a strong downward airflow with the rain. When the downward airflow meets the ground, it will spread around and form a strong wind. Therefore, there will be strong winds before a thunderstorm comes to prison.