Tornado

tornado-eco-gloss
 
A tornado is a violent atmospheric wind storm that extends from a thunderstorm to the ground in a funnel shape. Very often tornadoes form out of supercell thunderstorms, which are storms that last for a number of hours, have a rotating updraft of wind and have a hook or pendant shape on radar.
 
The updraft of wind in these weather systems contributes to the formation of a tornado. Wind that is closer to the ground moves at a slower speed in one direction and gets caught in a storm’s updraft that is moving faster and in the opposite direction. This is called a wind shear. The updraft tilts the wind closer to the ground to a vertical angle resulting in a column of rotating air that forms tornadoes.
 

Read more about 'Tornadoes'

Visible clues of a tornado can be difficult to spot as some tornadoes never form a visible funnel. But dark green skies, walls of clouds with large hail and a loud roar similar to a freight train are good indicators that conditions are ripe for a tornado.
 
In the event of a tornado, it’s best to move to either a basement or the lowest possible floor in a building. If a basement is not available, an interior room of the building that is away from windows, such as a hallway or bathroom, is the second best option.
 
Source: NOAA.gov
 
(Text by Noel Kirkpatrick)
(Photo: ya.zan)

How Tropical Storm Andrea is spawning tornadoes

Satellite image reveals Moore tornado scar

Stars of Discovery's 'Storm Chasers' killed in Oklahoma tornado

Tornado recovery: What Moore can learn from Joplin

Gimme shelter: Why storm cellars and basements are a rarity in Oklahoma

Kevin Durant pledges $1 million to the Red Cross for tornado relief

Moments of hope after the Oklahoma tornado [Photos]

Watch: Tornado survivor finds dog during TV interview

Architecture for Humanity announces Rebuild Moore campaign

Deadly Moore tornado tops the scale at EF-5

Storms that spawned Oklahoma tornadoes seen from space

How to ease children's anxiety after a disaster

SPONSORED