TornadosBlue

= Tornadoes =

__//**Nick L. & John M.**//__ __//**Blue Class**//__ =__//**Introduction **//__= Tornadoes are a very unexpecting natural disaster in nature. Today their is only a 13 minute warning of when a tornado is about to hit ground.(4) Tornadoes usually form by thunder clouds with high precipitation.(5) Tornadoes cause flying debris such as cars, trees, and if its very strong small houses.(4) Depending on how strong the tornado is, they either last a few minutes or if its a storng one an hour or more.(4) Tornadoes prime season are May and June, this is when most tornadoes form.(4) Scientists determine what category tornadoes are by the fujita scale, which is based on wind speed.  =__//**Dangers **//__= Tornadoes can destroy almost anything in its path and cause severe damge. It causes debris to be thrown miles away from its original spot, and can turn small things such as pencils into a lethal object.(5) In some cases it can destroy small towns such as the picture shown below.(5) This can leave families without shelter and no where to go.(5) A Newspaper Article about Tornado Destructions

=__//**Conditions of Formation **//__= Tornadoes form when the cold air and warm air combine, and the cold air goes down as the warm air rises.(5) This warm air starts to twist into a spiral, which forms a tornado.(4) Tornadoes form in clouds known as cumulonimbus, these clouds form when the air pressure is low.(5) They're also likely to form on flat ground such as plains, as you go further west its more likely for tornadoes to form because of the terrain but it's still possible for them to form on the East Coast.(5) The air pressure in an f4 tornado was 850mm in the vortex, where before it was 950mm outside of the tornado, this shows how fast the air pressure can change in just a few seconds. To show how low the air pressure was, Hurrican Katrina was around 900mm and this f4 tornado was 850mm.  =__//**Historical Examples **//__= The worst tornado ever recorded was May 3, 1999 in Oklahoma which passed through these towns such as Chickasha, through south Oklahoma City, the suburbs of Bridge Creek, Newcastle, Moore, Midwest City and Del City.(2) This tornado had a destruction radius of 38-miles. One of the worst tornadoes ever to hit, whiched claimed 44 deaths and hundreds of injuries.(2) This tornado had winds up to 261-318 and caused total devastation to Oklahoma which is an F5 on the fujita scale. Click here to see a Tornado being formed =__//**Safety **//__= When seeking shelter for tornadoes you want to stay in an underground shelter, when you go further west you see more houses that usually have a separate place for people to hide.(5) For people on the East you would want to go under something heavy and stay away from the windows, or if you have an underground basement that would also be a safe place.(5) You can also make assumptions wether if a tornado is near by, if their is hail, the sky is greenish, a very load roar, and a very large cloud.(5) Make sure not to be in any automobiles and try and outrun the tornado, and instead leave it immediately.(5) And the last thing you want is a radio so you can keep up to date with the tornado.(5) =__//**Sources **//__= 1) "Fujita Scale." //Home Alarms Will Alert and Protect You//. Web. 01 Dec. 2010. []. 2) Way, By The. "Greensburg Tornado Anniversary." //WOODTV.com Blogs//. Web. 01 Dec. 2010. []. 3)//Florida Storm Shelters, Inc.// Web. 01 Dec. 2010. []. 4) "Ad Call." // Environment Facts, Environment Science, Global Warming, Natural Disasters, Ecosystems, Green Living - National Geographic //. Web. 01 Dec. 2010. []. 5) "Tornadoes....Nature's Most Violent Storms." // NOAA's National Severe Storms Laboratory //. Web. 01 Dec. 2010. []. 6) (above), By Definition. "The Online Tornado FAQ (by Roger Edwards, SPC)." // Storm Prediction Center //. Web. 01 Dec. 2010. [].

7)"Tornado Timecode Quick Clips : Storm Video, Hurricane, Tornado and Other Extreme Weather Stock Footage." //Storm Video - Hurricane Katrina Stock Footage - Tornado, Hurricane, Blizzard, Snow, Forest Fire//. Web. 01 Dec. 2010. [|http://www.stormvideo.com/catalog/index.php?main_page=index&cPath=1_9.] 8) Maureen, By. "Tornado Hits Yazoo City Area in Mississippi on April 24, 2010." // Suite101.com: Online Magazine and Writers' Network //. Web. 01 Dec. 2010. []. 9) "Tornado Story in Words and Pictures - Heber Springs, AR - The Sun-Times." // Homepage - Heber Springs, AR - The Sun-Times //. Web. 01 Dec. 2010. [].