Study finds climate change may be intensifying tornadoes 05:07. Tuesday's very rare and strong December tornado in Washington state comes as scientists are learning more than ever about how ...

Crucial to tornado formation is wind shear, which occurs when winds at different altitudes blow at different speeds or directions. This creates horizontal spinning air currents within the storm.

On average, about 800 tornadoes occur in the United States each year. They can appear and disappear in moments, and key details about their formation are unknown. These factors make the research ...

NASHVILLE, Tenn. (WKRN) – Tornadoes are a destructive form of severe weather that can happen at any time during the year. Much of the time, these violent rotating columns of air do little damage.

One muggy day in July 1986, a news helicopter was recording footage of a festival in Minneapolis when the pilot and photographer glimpsed a tornado over nearby Brooklyn Park. They moved toward it ...

Ever wondered how we go from still air to swirling storm? In this video meteorologist—and storm chaser!—James Spann explains where tornadoes come from. In ...

What causes tornadoes? In Tornado Alley, where a tornado killed at least 24 people in Moore, Okla., Monday, the disasters are relatively frequent when moist air from the Gulf of Mexico meets dry, c… ...

It destroyed 32 homes and injured 24 people.How tornadoes are ratedTornadoes are ranked on a scale based on damage they cause.The Enhanced Fujita Scale goes from 0 to 5, with zero being the ...

If such instability develops, outbreaks of severe weather and tornadoes are likely. Although these storms can be dangerous, the timing of this volatile pattern seems favorable for the project ...

There were 29 tornadoes in Ohio on July 12, 1992, and 19 on Nov. 10, 2002, the most of any day since 1950. There were 61 tornadoes in 1992, the most since 1950 until Ohio broke its tornado record ...

Tornadoes don't just appear out of nowhere. They need the perfect storm to form. It starts when warm, humid air clashes with cold air, which can generate a powerful thunderstorm known as a supercell.