When rain-cooled downdrafts hit warm air near the ground, a low hanging revolving cloud forms beneath the cell， a tornado is imminent.
When rain-cooled downdrafts hit warm air near the ground, a low hanging revolving cloud forms beneath the cell， a tornado is imminent.
当雨冷凝下曳气流撞击地表暖气流----“超级胞”下方一股低旋的云流，龙卷风就开始逼近了。