Introduction of squall line weather

The squall line weather is a narrow cloud belt arranged by many thunderstorm cell, which is about 20 to 50 kilometers wide and tens to hundreds of kilometers long, and can last for 4 to 18 hours. At the intersection of squall lines, the wind direction turns sharply, the wind speed increases sharply, the air pressure rises sharply, the temperature drops sharply, and it is often accompanied by severe weather phenomena such as thunderstorms, heavy rains, strong winds, hail and tornadoes. It is a thunderstorm or cumulonimbus cloud belt.