TORNADOES
BY: THOMAS NIEDRINGHAUS
Tornadoes
 What is a Tornado?
 Where do Tornadoes mostly happen in the U.S.A?
 Where do often do they happen on the planet Earth?
How they get measured. Lowest Ef- 0
Highest Ef- 5
This was in 1884
This was a rescue search in Alabama
 A tornado is
formed by a cold
front mixing with
a warm front going
In opposite directions vies- versa causing
it to spin when they
meet thus causing a tornado.
Sky is usually green and is a
During a thunder storm
How a tornado is formed
What do tornadoes cause other than tornadoes
 Water Spouts ( when a tornado goes on water).
 Dust devils (when a tornado meets sand and they
mix).
Where Tornadoes happen most often in the USA
 Tornado Alley!!!!
Key Terms
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Dangerous
Funnel
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conventional radar: instrument that detects the location, movement, and intensity of precipitation, and gives
indications about the type of precipitation. It operates by emitting microwaves, which are reflected by
precipitation. Also called radar.
Doppler radar: a sophisticated type of radar that relies on the Doppler effect (the change in frequency of waves
emitted from a moving source) to determine wind speed and direction, as well as the direction in which
precipitation is moving. fair-weather waterspout: relatively harmless waterspout that forms over water and
arises either in conjunction with, or independently of, a severe thunderstorm.
Fujita Intensity scale: scale that measures tornado intensity, based on wind speed and the damage created.
funnel cloud: cone-shaped spinning column of air that hangs well below the base of a thunderstorm cloud.
mesocyclone: region of rotating updrafts created by wind shear within a supercell storm; it may be the
beginnings of a tornado. multi-vortex tornado: tornado in which the vortex divides into several smaller
vortices called suction vortices.
NEXRAD: acronym for Next Generation Weather Radar, the network of 156 high-powered Doppler radar units
that cover the continental United States, Alaska, Hawaii, Guam, and Korea. suction vortices: small vortices
within a single tornado that continually form and dissipate as the tornado moves along, creating the tornado's
strongest surface winds.
supercell storm: the most destructive and long-lasting form of a severe thunderstorm, arising from a single,
powerful convective cell. It is characterized by strong tornadoes, heavy rain, and hail the size of golf balls or
larger.
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Scientist
 Gregory S. Forbes ( Studied under Ted Fujita).
 Ted Fujita ( Made the break through of the Fujita
scale with the he of Gregory S. Forbes).
Movie
thanks
 Picture of fujita scale thanks to google images
 "Tornado, 1884." Dangerous Planet. Gale, 2010.
. In Context. Web. 2 Feb. 2012.
Gale Science
 "Rescue Workers Search for Survivors after
Tornadoes in Alabama." Gale Science in Context.
Detroit: Gale, 2011. Gale Science In Context. Web. 2
Feb. 2012.
 Tornado formation pic from weatherwizkids.com
 http://www.brainpop.com/science/weather/tornado
es/
http://www.google.com/imgres?hl=en&biw=1366&bih=664&gbv=2&tbm=isch&tbnid=672jcfoqod0SOM:&imgrefurl=
https://commons.wikimedia.org/wiki/File:Tornado_Alley_Diagram.svg&docid=mP4LjfcDFpNz4M&imgurl=https://u
pload.wikimedia.org/wikipedia/commons/thumb/4/43/Tornado_Alley_Diagram.svg/512pxTornado_Alley_Diagram.svg.png&w=512&h=327&ei=FE0xT6D0Jou5twfN3fHjBg&zoom=1&iact=hc&vpx=897&vpy=3
39&dur=1866&hovh=179&hovw=281&tx=157&ty=118&sig=113627429298073087087&page=1&tbnh=116&tbnw=181&s
tart=0&ndsp=18&ved=1t:429 ,r:10,s:0
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https://upload.wikimedia.org/wikipedia/commons/thumb/4/43/Tornado_Alley_Diagram.svg/512pxTornado_Alley_Diagram.svg.png
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http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?displayGroupName=Reference&disa
bleHighlighting=true&prodId=SCIC&action=e&windowstate=normal&catId=&documentId=GALE|CX3044900028&
mode=view

http://en.wikipedia.org/w/index.php?title=Special:Search&search=Meteorologist+names&fulltext=Search&redirs=0&
profile=default
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http:// en.wikipedia.org/w /index.php?title=Special%3ASearch&search=tornado+scientists&button=
http://en.wikipedia.org/w/index.php?title=Special%3ASearch&profile=default&search=Ted+Fujita&fulltext=Search
http://www.cnn.com/2012/01/24/us/alabama-storms/index.html?iref=allsearch
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