A tornado, also known as a twister, is a rapidly rotating column of air that extends vertically from the surface of the Earth to the base of a cumulonimbus or cumulus cloud. [1] Tornadoes are often (but …

If it is in contact with the ground it is a tornado; otherwise it is a funnel cloud. Dust and debris beneath the condensation funnel confirm a tornado's presence. Be careful! Tornadoes can form and be in …

Nov 25, 2025 · Tornado, a small-diameter column of violently rotating air developed within a convective cloud and in contact with the ground. Tornadoes occur most often in association with thunderstorms …

Aug 28, 2019 · What is a tornado? A tornado is a violently rotating column of air that extends from a thunderstorm to the ground. It’s often portended by a dark, greenish sky. Black storm clouds gather.

Tornadoes are some of the most destructive forces of nature. Learn how tornadoes form, how they are rated, and the country where the most intense tornadoes occur.

Before a tornado hits, the wind may die down and the air may become very still. A cloud of debris can mark the location of a tornado even if a funnel is not visible.

Tornadoes, also called twisters, are columns of air rotating dangerously fast. The air is in motion because of the difference in pressure between the center of the tornado (very low pressure) and the …

What is a tornado? A tornado is a rapidly rotating column of air that reaches between the base of a storm cloud and the Earth's surface. They form in very unsettled weather conditions as part of...

Aug 13, 2018 · What is a Tornado? Most tornadoes have a distinctive funnel shape. A tornado is an air column rotating at immense speeds that is in contact with the earth’s surface and a cumulonimbus …

6 days ago · Though most tornadoes form from supercell thunderstorms, there are other tornado types as well. Strong lines of thunderstorms, referred to as “quasi-linear convective systems,” also called …