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en.wikipedia.org/wiki/Tornado

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth .... A tornado is "a violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a .... Tornadoes can have a wide range of colors, depending on the environment in which they form.

www.reference.com/science/wide-can-tornado-ground-49343b50ec97c6ea

The widest tornado ever recorded by the National Weather Service was 2.6 miles in diameter. It occurred in El Reno, Okla., in 2013. Tornadoes this wide are ...

www.wunderground.com/resources/education/tornadoFAQ.asp

Interactive Tornado Map! ... View More Tornado Photos. Global Tornado Map ... Tornadoes can be strong enough to destroy large buildings, leaving only the bare ... When the funnel cloud is half-way between the cloud base and the ground, it is ... Tornado paths range from 100 yards to 2.6 miles wide and are rarely more ...

blogs.mprnews.org/updraft/2013/06/tornado_history_26_mile_wide_o

Jun 4, 2013 ... Widest tornado ever recorded. ... In Minneapolis, a 2.6 mile wide tornado would stretch from the ... Don't think for a second it can't happen. .... Newer › El Reno Tornado Controversy: “Drive away” or shelter “above ground?”.

www.stormfax.com/fujita.htm

Enhanced Fujita Scale (EF) for Tornado Damage ... houses; trains overturned; most trees in forests uprooted; heavy cars lifted off ground and thrown.

www.weatherexplained.com/Vol-1/Tornadoes.html

As the storm moves along the ground, this outer ring of rotating winds ... Although very rare (only about 2% are violent), these extreme tornadoes can last for hours. .... by winds in excess of 260 mph and a damage path up to 0.75 mi wide.

www.tsgc.utexas.edu/stars/tornado.html

Jun 29, 1998 ... The most violent tornadoes can produce massive destsruction with wind speeds of 250 mph or ... Damage paths can be more than 1 mile wide and 50 miles wide. ... Once the funnel touches the ground is becomes a tornado.

stormaware.mo.gov/tornado-facts-history

Learn basic tornado facts and review Missouri's tornado history. ... Tornadoes can be more than one mile wide and stay on the ground for over 50 miles.

www.nssl.noaa.gov/education/svrwx101/tornadoes/faq

Mobile Doppler radars can measure wind speeds in a tornado above ground level, .... There is a statistical trend toward wide tornadoes having higher EF- scale ...