A tornado is a violently rotating column of air that rotates while in contact with
both the surface .... A tornado is "a violently rotating column of air, in contact with
the ground, either pen...
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 ...
Mobile Doppler radars can measure wind speeds in a tornado above ground
level, .... There is a statistical trend toward wide tornadoes having higher EF-
Mar 29, 2016 ... At what wind speed of the cloud-to-ground vortex does a tornado begin? ... [A
tornado can double back suddenly, for example, when its bottom is hit by ....
Harold Brooks) toward wide tornadoes having higher damage ratings.
May 1, 2015 ... In practice, even an open field can provide indicators of tornado intensity, such as
ground scouring. For example, an EF-4 rated tornado that ...
Damage paths can be in excess of one mile wide to 50 miles long. In an average
year, 1000 ... When it reaches the ground it is called a tornado. Funnel Cloud
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.
Although tornadoes can occur at any time of the year, most form during the
months .... has ground contact for about six miles, marking a path up to 500 feet
Depending on the forward movement of the tornado and how strongly the
tornado is interacting with the ground, there can be a wide variety of effects. A
Jun 29, 1998 ... The most violent tornadoes can produce massive destsruction with wind speeds
of ... The area of rotation, 2-6 miles wide, now extends through much of the storm.
... Once the funnel touches the ground is becomes a tornado.