TornadosPurple

=﻿Tornados! =

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Evan Callaghan and Dierdrah Bellevue Purple Class

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__Introduction __

Tornados are Natures most Dangerous Storms they are Responsible for millions of dollars in property damage and many fatalitys. Tornados can happen anytime during the year, they mostly happen in the spring through the early summer. May and June are the most occurrence times but April is the month that contains the strongest more harmful storms. (2) While they are a part of the worlds systems they mostly occur in the united states. (3)

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__Dangers __

==== Tornados can destroy a neighborhood in minutes. It is lethal and very dangerous. (3) Air around storm becomes very still and peaceful before direct contact because the air only getting sucked in so you have no time to prepare yourself at times. (3) The average wind speed of a tornadoes would be 30- 70 mph and winds inside the tube can reach 300 mph.(4)====

 __Conditions of Form ____ation __ What causes the tornadoes is th understorms develop in warm, moist air along the ground rushes upwards meeting cooler and dryer air in advance eastward-moving cold fronts.(1)Thunderstorms often produce large hail, strong winds, and tornadoes. As rising warm air cools, moisture in the air condenses forming big thunder clouds. They can grow as big as 50,000 ft in height.(2) They happen in dryline along of the Rocky mountains, also known has "tornado alley" in the texas panhandle. and in the southern high Plaines.(1) They can also occur in different places like Europe, Asia, and Australia (2). When a Tornados forms the wind pressure around the tornado drops cause of the drop in air pressure has to do with hot and cold air masses. Cold air pressure near warm air the cold air is more dense and sends the warm air, Then the moisture in the air condenses causing heavy rain that starts the storms.

To see more on different kinds of tornadoes click here: http://www.nssl.noaa.gov/edu/safety/tornadoguide.html



__Historical __

====In april a average of 27 death by tornados occurred between the years of 1955 and 1999. One of the all-time worst tornadoes occurred on April 3-4, 1974 when 148 twisters struck 13 states more then 300 deaths in that time span.(2).1% of clouds are F1 wind speed of 261 m.p.h. They mostly happen in the southern U.S (2) Common along the gulf states as well. On average a year, 800 tornados are reported nationwide, which cause 80 death and 1,500 injuries. (1) There is an average of about 70 fatalities a year and 1,500 injuries. (4). Sometimes two or more tornadoes can happen at the same time they are transparent till dust starts to pick up.(1) ====



__Safety __

Storm cellars or basements provide the best protection, you should be in the lowest place possible. Stay away from windows, doors and walls. Make sure you stay away from corners cause they attract debris. You don't want to get trapped in a car. if there is no shelter around lie flat in a ditch or other low areas. DO NOT go under a bridge, you are safer in a lower flat location.(4)

To see more on safety tips and what to do when a tornado is coming go onto this website: http://www.ready.gov/america/getakit/index.html



IF YOU WANT A REAL VIRTUAL ACTION POWER FUN LINK: http://dsc.discovery.com/tv/storm-chasers/tornado-chase-game/tornado-chase-game.html

Sources //(1)DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Weather Service. //__//Tornadoes...Natures Most Violent Storms.//__ NOAA/PA 02052 ARC 5002.November 23. 2010. 

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(2)Ann Marie Imbornoni.//__Tornadoes Facts and figures about twisters.__// Part of Family Education  2007. web. November 30. 2010 ======

(3) Fema. Tornadoes. DisasterAssistance.gov. and Ready.  Wednesday 11-Aug-2010 14:56:36 EDT. Web. November 30 2010.

(4) Ready__//.Tornadoes//__. Fema. <http://www.ready.gov/america/beinformed/tornadoes.html>. November 11,2010. Web. December 1,2010.