Tornadoes are the most violent storms on Earth, with wind velocities that can exceed 200 miles per hour. How do these terrifying cyclones form? Meteorologist James Spann sheds light on the lifespan of tornadoes as they go from supercell thunderstorms to terrible twisters before eventually dissolving back into thin air.

龙卷风是地球上最猛烈的风暴，其风速可以超过每小时200英里。这些可怕的旋风是如何形成的？气象学家詹姆斯-斯潘揭示了龙卷风的寿命，因为它们从超强的雷暴变成了可怕的旋风，最后又消散在空气中。