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The details of how and why tornadoes form and dissipate remain poorly understood. Most tornadoes last from a few seconds to a few minutes; only rarely do they last more than 10 minutes.
www.ask.com/youtube?q=How Do Tornadoes Form?&v=lmWh9jV_1ac
Aug 19, 2014 ... View full lesson: http://ed.ted.com/lessons/how-do-tornadoes-form-james-spann Tornadoes are the most violent storms on Earth, with wind ...

How do tornadoes form? - eSchooltoday


Here is simple step by step description of how a tornado develops.

How do tornadoes form? - James Spann | TED-Ed


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  ...

How Do Tornadoes Form - Universe Today


Oct 14, 2010 ... How Do Tornadoes Form ... The warm air eventually twists into a spiral and forms the funnel ... This is where the strongest tornadoes form.

How Tornadoes Form and Why They're so Unpredictable


May 11, 2015 ... How Tornadoes Form and Why They're so Unpredictable. A look at storm science ... Here's what scientists do know: A tornado, or twister, is a ...

How Do Tornadoes Form? | Social Studies, Science | Video | PBS ...


On average, about 800 tornadoes occur in the United States each year. ... challenges of studying tornadoes and shows how computer simulations are helping ...

Severe Weather 101: Tornado Basics


Tornadoes are the most violent of all atmospheric storms. Where do tornadoes occur? Tornadoes occur in many parts of the world, including Australia, Europe, ...

Where Do Tornadoes Form? | Weather Underground


The vast majority of tornadoes occur east of the Rocky Mountains in the deep South and a region we call "Tornado Alley," which is located in the Great Plains.

The Science of Tornadoes | Weather Underground


The strength of a tornado is measured by the Enhanced Fujita Scale. How do tornadoes form? The truth is that scientists don't fully understand how tornadoes ...

Helpful Resources

How Do Tornadoes Form? - Dangerous Weather


How Do Tornadoes Form? Tornadoes are associated with large (supercell) thunderstorms that often grow to over 40,000 feet. A column of warm humid air will ...

How Do Tornadoes Form? - LiveScience


May 12, 2014 ... Though scientists don't entirely understand how tornadoes form, they do have a good idea about the conditions that cause tornadoes to ...

How Do Tornadoes Form? - Scientific American


Oct 16, 2014 ... Every year tornadoes rip through the U.S. Midwest, leaving death, injury and billions of dollars of damage in their wake. Where do these ...

Tornadoes - Weather Wiz Kids weather information for kids


How do tornadoes form? Most tornadoes form from thunderstorms. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these ...

How do tornadoes form? - CNN Video - CNN.com


Apr 2, 2015 ... CNN meteorologist Jennifer Gray explains how tornadoes form and why they are one of the most dangerous weather phenomena on Earth.