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  2. Tornado - Wikipedia

    en.wikipedia.org/wiki/Tornado

    Small-scale, tornado-like circulations can occur near any intense surface heat source. Those that occur near intense wildfires are called fire whirls. They are not considered tornadoes, except in the rare case where they connect to a pyrocumulus or other cumuliform cloud above. Fire whirls usually are not as strong as tornadoes associated with ...

  3. Tennessee tornado sirens failed to sound in storm that ... - AOL

    www.aol.com/tennessee-tornado-sirens-failed...

    Officials in Tennessee are facing questions after tornado sirens allegedly failed to sound to alert residents to the storm that killed six people.. Tornadoes and severe thunderstorms tore through ...

  4. 10 types of tornadoes that occur in the US - AOL

    www.aol.com/weather/10-types-tornadoes-occur-us...

    Tornadoes are some of the most extreme weather events on Earth, and just like snowflakes, no two tornadoes are the same. No matter their shape or size, every type of twister can be dangerous, with ...

  5. Where Have All The EF5 Tornadoes Gone? The Surprising ... - AOL

    www.aol.com/where-ef5-tornadoes-gone-surprising...

    The last official EF5 tornado to hit the U.S. was the infamous 2013 Moore, Oklahoma, tornado. This violent tornado was on the ground for more than 40 minutes, carving a path of devastation more ...

  6. Hook echo - Wikipedia

    en.wikipedia.org/wiki/Hook_echo

    Classic-style hook echo of the F5 1999 Bridge Creek-Moore tornado.. A hook echo is a pendant or hook-shaped weather radar signature as part of some supercell thunderstorms.It is found in the lower portions of a storm as air and precipitation flow into a mesocyclone, resulting in a curved feature of reflectivity.

  7. History of tornado research - Wikipedia

    en.wikipedia.org/wiki/History_of_tornado_research

    Strong mesocyclones show up as adjacent areas of yellow and blue (on other radars, bright red and bright green), and usually indicate an imminent or occurring tornado. The history of tornado research spans back centuries, with the earliest documented tornado occurring in 200 and academic studies on them starting in the 18th century. This is a ...

  8. Tornadoes form during severe weather. What conditions help ...

    www.aol.com/tornadoes-form-during-severe-weather...

    Tornadoes can form any time the conditions are right. They take many shapes, but they all start the exact same way. Here's what to know.

  9. Portal:Tornadoes - Wikipedia

    en.wikipedia.org/wiki/Portal:Tornadoes

    Various types of tornadoes include the multiple vortex tornado, landspout, and waterspout. Other tornado-like phenomena that exist in nature include the gustnado, dust devil, fire whirl, and steam devil. Most tornadoes occur in North America (in the United States and Canada), concentrated in a region nicknamed the Tornado Alley. Tornadoes also ...