Quick Answer
A tornado's presence is often indicated by a loud, continuous roar similar to a freight train, followed by a sudden drop in temperature and a dark, greenish sky. You may also notice rotating debris or a funnel cloud.
Identifying Tornado Signs
When a tornado is nearby, it’s essential to recognize the warning signs to seek shelter immediately. A dark, greenish sky is a sign of a tornado’s presence. This color is caused by the presence of large amounts of hail, heavy rain, and strong winds. The sky will also appear to be rotating, similar to a giant vortex.
Visual Warning Signs
Visual warning signs of a tornado include rotating debris, such as trees or branches, and a funnel cloud. A funnel cloud is a rotating column of air that extends from the base of the thunderstorm to the ground. If you spot a funnel cloud, take immediate action and seek shelter. The funnel cloud will typically appear as a rotating column of air that may be transparent, opaque, or even resemble a rope.
Auditory Warning Signs
Auditory warning signs of a tornado include a loud, continuous roar similar to a freight train. This sound is often accompanied by a series of loud claps or booms, which indicate the presence of hail or strong winds. The roar will be constant and will not have a start or stop point, unlike other sounds caused by thunderstorms. If you hear this sound, take immediate action and seek shelter.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.