Causes of hail in South China in recent years

In recent years, there are many hailstones in the south: strong convective weather, westerly belt moving south, and continuous circulation of airflow.

1, strong convective weather: The process of strong convective weather is a typical cold-warm collision-the configuration of atmospheric circulation such as subtropical high, which makes the southerly wind over South China stronger and provides sufficient water vapor and unstable energy for many atmospheres.

2. The westerly wind moves south: the westerly wind moves south with a cold vortex, which drives the dry and cold air mass in central and eastern China to penetrate south, providing dynamic conditions for strong convective weather. When the two interact, it is easy to form strong thunderstorm clouds, accompanied by hail and other disastrous weather.

2. Continuous air circulation: When the water droplets in the cloud are carried to the high altitude by the updraft, they will freeze into small ice particles at low temperature. These small ice particles circulate continuously in the rising downward flow, collide and condense with other water droplets or small ice particles, and gradually increase into hail. When they reach a certain size, they will exceed the bearing capacity of the updraft and fall to the ground.

How to deal with hail weather

1. Find shelter: When the hail comes, you should find shelter as soon as possible, such as garages, shops, basements and public buildings. If there is no shelter, you can squat in the car, corner of the room, next to the window and other places to reduce the risk of injury.

2. Use protective equipment: When outdoors, you can use helmets, protective glasses, gloves, long-sleeved clothes and other items to protect your body and reduce the possibility of injury. If you drive, you can close the windows and skylights to avoid hail hitting the car.

3. Route selection for disaster avoidance: If you find that your area is being hit by hail, you should find shelter as soon as possible. When looking for an escape route, you should choose a gentle and easy-to-follow route and try to avoid staying in an open outdoor place.