81. Tornadoes - DAN'S WILD WILD WEATHER PAGE Why do some thunderstorms produce violent tornadoes while most do not? Moretornadoes occur in the United States than any other place in the world. http://www.wildwildweather.com/twisters.htm

welcome to wildwildweather.com Tornado Weather Click the Map for a more detailed view. Why do some thunderstorms produce violent tornadoes while most do not? The answer is related to the wind . If the wind changes direction and gets stronger with height, it can cause a column of air to rotate. Think of a rotating column of air about 2 miles high and half a mile wide. Suddenly a thunderstorm updraft pulls this column upward. Now it's 3 miles high and a few hundred yards wide. When this happens the air spins up. Sit in a swivel chair and hold your arms out. Now have someone spin you around. As you spin bring your hands to your lap. Be careful doing this! The scientific term for this spinning up is conservation of angular momentum. It is this process that can take 50 mph winds and turn them into a tornado with 200 mph winds! Everything has to come together just right for a tornado to occur. More tornadoes occur in the United States than any other place in the world. Alabama ranks 4th in the nation for the number of killer tornadoes, and the risk of tornadoes is higher in the Tennessee Valley. Texas and Oklahoma have many more tornadoes than we do, here in the Tennessee Valley, ours tend to be more deadly. The worst tornado disaster occurred on March 21, 1932. Over 300 people were killed in the state during 2 waves of tornadoes that day.

82. FEMA: Preparedness U.S. Federal Emergency Management Agency (FEMA) fact sheets on preparing for natural and technological disasters. Natural disasters discussed include earthquakes, landslides, mudflows, volcanoes, hurricanes, tornadoes, tsunamis, floods, and wildland fires. http://www.fema.gov/rrr/prep.shtm

Hazards Assistance Flood Maps NPSC ... Home Preparedness Search FEMA Individual Assistance Public Assistance Hazard Mitigation Federal Response Plan Preparedness Disasters take many forms. They're caused by gale force winds, sudden floods, releases of deadly chemicals, fire, ice, even upheavals of the earth itself. When disaster strikes, the best protection is knowing what to do. To find out more about disasters and steps you can take to prepare , select a disaster or other topic below for further information. To find out detailed information about your community's disaster plans, call your local office of emergency services. Natural Disasters Earthquakes Extreme Heat Fire Safety During or After a Disaster Floods and Flash Floods ... Thunderstorms and Lightning Technological Disasters Hazardous Materials House and Building Fires Nuclear Power Plant Emergency Terrorism It is important to consider the plight of animals during disasters. For more information on this subject, visit the Animals and Emergencies section FEMA also produces a number of publications.

83. Tornadoes tornadoes. The unpredictable and destructive nature of tornadoes,defined by The National Weather Service as a violently rotating http://www2.sunysuffolk.edu/mandias/honors/student/tornado/

Tornadoes The unpredictable and destructive nature of tornadoes, defined by The National Weather Service as "a violently rotating column of air in contact with the ground and pendant from a thunderstorm," frequently results in deadly consequences for the people and paths it crosses. It is because of its mysterious and often erratic nature that tornadoes have been widely studied and researched by scientists, leading to a better and ever growing understanding of the atmospheric conditions which give rise to the spiraling vortex known as the tornado. Introduction to ES17 Honors Website Project Formation of Thunderstorms Angular Momentum and Vortex Formation Tornado Formation within Storms ... References Links to learn more about Tornadoes Tornadoes Scientific American: Turn! Turn! Turn! Further Informational Links Suffolk County Community College Home Page Suffolk County Community College Honors Home Page Suffolk Community College Earth and Space Sciences Home Page E-mail

84. Tornadoes And Tornado Research A comprehensive website on tornadoes with information on how tornadoesform, what to do when a tornado strikes, and much more. Also http://www.geocities.com/CapeCanaveral/Lab/2430/

Tornado Formation Tornado Safety Tornado Statistics The Fujita Scale ... View Guestbook document.write(""); This site last updated 02-20-03. Joe Furr

85. Tornadoes ALL the information you need on tornadoes and thunderstorms. Tons of informationand links, plus my own tornado damage photos. tornadoes. http://www.geocities.com/CapeCanaveral/Lab/2430/tornado.html

Tornadoes Formation of Tornadoes Fujita Scale What to do before during , or after a tornado. Links to More Information Formation of Tornadoes Most of the information on the formation of tornadoes is located in the thunderstorm section. For that information, click below. As the mesocyclone (discussed in the thunderstorm section ) strengthens it extends further downwards. At the same time, it is becoming more compact which is causing it to spin faster and faster. Eventually, this rotation finds its way to the ground and a tornado is born. To table of contents The Fujita Scale The Fujita Scale measures a tornado on a scale from to 5 based upon the amount of damage inflicted upon man-made structures. You CANNOT look at a tornado and determine its intensity. Intensity Wind Speed Damage 40-72 mph Light 73-112 mph Moderate 113-157 mph Considerable 158-206 mph Severe 207-260 mph Devastating 261-318 mph Incredible It should be noted that there is a hypothetical F6 with winds from 318 mph to Mach 1. This is hypothetical. It has not benn proven to exist and may never be proven to exist, however, there is enough evidence supporting the idea to mention it here. Weak Tornadoes F0 and F1 tornadoes 69% of all tornadoes less than 5% of all tornado deaths lifetime 1-10+ minutes Strong Tornadoes F2 and F3 tornadoes 29% of all tornadoes 30%of all tornado deaths lifetime 20+ minutes Violent Tornadoes F4 and F5 tornadoes 2% of all tornadoes 70% of all tornado deaths lifetime can be 1+ hours To table of contents Before a Tornado.........

86. Vortex100 Storm Chase Page: Your Severe Weather Forecasting Resource Valuable resource page for storm chasers, including extended discussion of severe weather, tools for forecasting tornadoes, and NCEP forecast models. http://members.aol.com/vortex100

................................................................Meteorologist Robert Lattery Your storm chase begins here with: The weather data you need, and Timely outlooks from weather professionals Current Conditions Site Map Links Weather Chat Bulletin Board document.write(year) Robert Lattery s="na";c="na";j="na";f=""+escape(document.referrer)

87. Tornadoes Hopefully, it was in a video or on television. Each year as many as 1000 tornadoesmay occur in the United States. Describe when and where most tornadoes form. http://www.oar.noaa.gov/k12/html/tornadoes.html

Introduction H ave you ever seen a tornado? Hopefully, it was in a video or on television. Each year as many as 1000 tornadoes may occur in the United States. Their destruction can range from minor to devastating. Although about 100 people are killed each year by tornadoes, many more people survive unharmed. By knowing what to do you can greatly decrease your chances of getting hurt. This activity will introduce you to the history of tornado forecasting, tornado formation and tornado safety. What's in this section? Get Info Describe when and where most tornadoes form. Explain tornado watches and warnings and how to respond. Describe what tornadoes look like. Gather Data Learn about the first tornado forecast. Learn about the Fujita scale for rating tornadoes. Learn how to calculate percentages. Application Consider the impact the first tornado forecast had on saving lives. Discuss the importance of following safety plans.

88. Tornadoes: Nature's Most Violent Wind Contains information about tornadoes such as how they are formed, how they are ranked, and the structure of a tornado. http://www.usatoday.com/weather/tg/wtorwhat/wtorwhat.htm

Home News Money Sports ... Weather Inside the Basics Basics home Graphics, photos Storms, fronts Climate change ... Health effects Site Web Click here to get the Daily Briefing in your inbox 05/03/2001 - Updated 03:00 PM ET Source: USA TODAY research by Chad Palmer; Graphic by Chuck Rose Tornadoes: Nature's most violent wind Tornadoes have struck every U.S. state, including Alaska and Hawaii. But most tornadoes form in a belt from Nebraska southward through central Texas known as Tornado Alley and in the Southeast. Wind speeds in tornadoes can vary from 72 to almost 300 mph. Fortunately, only 2 percent of all tornadoes have winds greater than 200 mph. More details about tornadoes Fujita wind damage scale rates tornadoes Intense tornadoes can have more than one vortex Tornado information index ... Gannett Co. Inc.

89. Introduction To Tornadoes starts. Then, if other conditions are right, the thunderstorm may spinout one or more tornadoes. mph. tornadoes are also relatively small. http://www.movies.warnerbrothers.com/twister/cmp/tornadointro.html

A tornado (from the Spanish "tronada", meaning thunderstorm) is a violently rotating column of air rising up into a cloud. A thunderstorm is the first step in the creation of a tornado. A thunderstorm happens when there is moisture in the atmosphere, a lifting force causing air to begin rising, and unstable air that will continue to rise once it starts. Then, if other conditions are right, the thunderstorm may spin out one or more tornadoes. All thunderstorms are characterized by updrafts , rising air currents which supply the warm, humid air that fuels thunderstorms; sometimes, however, the column of rising air becomes a vortex a funnel cloud, or, if it reaches the ground, a tornado. A tornado is often located at the edge of an updraft, next to air coming down from the thunderstorm with falling rain or hail. (This explains why a burst of heavy rain or hail sometimes announces a tornado's arrival.) As air rises from the ground in the tornado's vortex, a low pressure area is created near the ground. Air rushes to fill this area, causing additional damage to areas not directly hit by the tornado. As air rushes into the vortex, its pressure lowers, cooling the air. This cooling condenses water vapor in the air into the tornado's familiar funnel-shaped cloud. As the swirling winds pick up dust, dirt, and debris from the ground, the funnel turns even darker. (Twisters that pick up little dirt can retain their white, cloud coloration, and some have taken on a red hue by picking up red dirt.)

90. Encyclopedia. Giannetta Meteorological Encyclopedia...WEATHER BY GIANNETTA...Cha Articles on Weather and Meteorology, ElNino, Hurricanes, tornadoes. Many weather charts/graphics/maps/pictures. Links to other weather sites, some as far away as the South Pole. http://www.enter.net/~wxdata/

YOUR BROWSER DOES NOT SUPPORT FRAMES... Click here to "Weather By Giannetta" "a.htm" NAME = "right" SCROLLING =YES NORESIZE>

91. TLC - Tornadoes by Matthew Zymet Unusual Winter tornadoes It was shortly before midnighton the first Valentine's Day of the new millennium. tornadoes on video! http://tlc.discovery.com/tlcpages/tornado/tornado.html

by Matthew Zymet "Unusual" Winter Tornadoes A system of four tornadoes, Georgia's deadliest outbreak in 50 years, swarmed through the southwest portion of the state, killing 22 and injuring over 100. The worst path of destruction was a mile wide by 10 miles long. After touring the damage by helicopter, Georgia Gov. Roy Barnes declared a state of emergency, saying, "This thing just cut a swath across a huge area. Within it there was total devastation.” Back in Washington, President Clinton expressed his sadness at the " terrible and unusual" weather tragedy. What's Going On With the Weather? All over the world people are starting to talk about the weather. Really Evidence of a Worsening Climate? However, on May 3, 1999, scientists from the University of Oklahoma, chasing the twister with truck-mounted Doppler radar, recorded the fastest winds ever to blow across the face of the Earth. This was the most ferocious tornado ever observed. Track the course of the Oklahoma tornado Tornadoes on video!

92. Bew! La Nature Insolite - Natureinsolite.com - Incredibleweather.com Image galleries of weather phenomena in Canada as well as tools for chasing tornadoes on the internet. Site in both English and French. http://www.incredibleweather.com/

E Les Frisbee Bonne visite! Bewindo fois depuis le 26 mai 1996 Lancement officiel 11 juillet 1996 Vous aimez? Votez pour mon site!

93. Tornadoes FLORIDA STORM WATCH tornadoes, STORM WATCH PAGES. What Time Are Florida'stornadoes Likely to Strike? Florida tornado climatology http://floridadisaster.org/bpr/EMTOOLS/Severe/tornadoes.htm

DEPARTMENT OF COMMUNITY AFFAIRS DIVISION OF EMERGENCY MANAGEMENT directory contact us ... Intergovernmental Relations Team Division of Emergency Management 2555 Shumard Oak Boulevard Tallahassee, Florida Comments? Suggestions? EMAIL US Federal Emergency Management Agency HOME HAZARDS PAGE FLORIDA STORM WATCH TORNADOES STORM WATCH PAGES HEAT WAVE HURRICANES TORNADOES THUNDERSTORMS FLOODS When is Florida's Tornado Season? F lorida ha s two Tornado Seasons. The Summer Season , from June until September has the highest frequencies with usual intensities of or on the Fujita Scale . This includes those tornadoes that form from landfalling Tropical Cyclones. The Deadly Spring Season , from February through April is characterized by more powerful tornadoes because of the presence of the jet stream. When the jet stream digs south into Florida and is accompanied by a strong cold front and a strong squall line of thunderstorms, the jet stream’s high level winds of 100 to 200 mph often strengthen a thunderstorm into what meteorologists call a supercell or mesocyclone. These powerful storms can move at speeds of 30 to 50 mph, produce dangerous downburst winds, large hail and the most deadly tornadoes.

94. Web Weather For Kids Atmospheric science experiments. Create a thunderstorm, lightning, tornadoes right in your classroom or at home. http://www.ucar.edu/40th/webweather/

Check out the new Web Weather for Kids! Predict weather!! Join the Public Science Day fun. AAAS Public Science Day 2000 - "The Science of Every Day Things" "Hi! I'm your guide! I'll be with you as you try these simple "do-at-home" experiments to learn what thunderstorms are all about. "You teachers might want to check out the Resource lists at the end of each of the activities, and the Teacher Tips page. "See our scrapbook about creating this Web Weather for Kids site." UCAR PAGE Roberts Forum Make a thunderstorm!! Make lightning!! Measuring distance Make a tornado!! How do thunderstorms build? How does lightning suddenly zap down out of a cloud? How can you tell ... How is a tornado formed? These activities are made possible by UCAR Project LEARN , and Science Discovery , who are participating in Public Science Day 2000 and the Unisys Prize competition.

95. Weather.com - Encyclopedia - Tornado Historical tornadoes tornadoes can occur at any time of the year andjust about anywhere in the world. However, the unique geography http://www.weather.com/encyclopedia/tornado/history.html?from=newscenter

96. CNN - Tornadoes Kill 4 In Tennessee, Arkansas - April 16, 1998 CNN.com http://www.cnn.com/WEATHER/9804/16/tornado/

COMMUNITY Message Boards Chat Feedback SITE SOURCES Contents Help! Search CNN Networks SPECIALS Quick News Almanac Video Vault News Quiz Tornadoes kill 4 in Tennessee, Arkansas Manila, Arkansas April 16, 1998 Web posted at: 7:36 p.m. EDT (2336 GMT) MANILA, Arkansas (CNN) At least one more tornado was sighted Thursday in an area of Arkansas already hit hard by a twister early in the day. But sirens designed to warn residents were inoperable because power lines were knocked down by the earlier storms. A tornado, shrouded by darkness, skipped across northeastern Arkansas and western Tennessee early Thursday, killing four people, including a brother and sister who died in their mobile home. At least 22 people were injured. Damage from the tornado 2.6MB/24 sec./320x240 824K/24 sec./160x120 QuickTime movie Rick Walker of KTBM Radio, reporting from Jonesboro, Arkansas, later said warning sirens in northeastern Arkansas, where the National Weather Service issued new tornado warnings, were not functioning. "Everyone is very much on edge," Walker said.

97. Weather.com - Safety - Tornado tornadoes are generally spawned by thunderstorms, though they have beenknown to occur without the presence of lightning. The stronger http://www.weather.com/safeside/tornado/

Home Health Travel Events ... Rays Awareness Seasonal Spotlight: Ski See weather related to ... Driving Events Golf Health Recreation Ski Travel Features of the Week Desktop Weather and No Ads Tornado Special Report Shop TWC online store Are You At Risk? ... Tornado Index A tornado is a violently rotating column of air extending between, and in contact with, a cloud and the surface of the earth. Tornadoes are generally spawned by thunderstorms, though they have been known to occur without the presence of lightning. The stronger tornadoes attain an awe-inspiring intensity, with wind speeds that exceed 200 mph and in extreme cases may approach 300 mph. What are some of the myths about tornadoes? The United States has the highest incidence of tornadoes worldwide, with about 1,000 occurring every year. According to Stu Ostro, a Senior Weather Specialist at The Weather Channel, this is due to the unique geography that brings together polar air from Canada, tropical air from the Gulf of Mexico, and dry air from the Southwest to clash in the middle of the country, producing thunderstorms and the tornadoes they spawn. Tornadoes can come one at a time, or in clusters, and they can vary greatly in length, width, direction of travel, and speed. They can leave a path 50 yards wide or over a mile wide. They may touch down for only a matter of seconds, or remain in contact with the ground for over an hour.

98. CNN - Arkansas Copes With Aftermath Of Killer Tornadoes - Mar. 3, 1997 CNN.com http://www.cnn.com/WEATHER/9703/03/weather.update.am/

Arkansas copes with aftermath of killer tornadoes Latest developments: Clinton will visit Tuesday Governor to seek disaster relief Other states also suffer Related stories and sites March 3, 1997 Web posted at: 5:20 a.m. EST (1020 GMT) LITTLE ROCK, Arkansas (CNN) Emergency workers searched for bodies and began assessing damage of "apocalyptic proportions" Sunday in the wake of devastating tornadoes that tore across the South. At least 24 people were killed and more than 250 injured in the storms that swept through Little Rock, Arkadelphia and other towns Saturday. Those tolls were expected to climb, said Dave Maxwell, spokesman for Arkansas Emergency Management. Storms were also blamed on at least 17 deaths in Kentucky, Ohio, Tennessee and Mississippi. (898 K / 20 sec. Flood rescues in Kentucky and West Virginia Arkansas State police said more than 20 tornados touched down Saturday, destroying or damaging hundreds of homes and buildings along a 250-mile path from south Arkansas to the state's border with Missouri. Clinton will visit Tuesday President Clinton will be going to his home state on Tuesday to inspect the damage, a White House official said. Federal Emergency Management Agency Director James Lee Witt was also expected to visit.

99. The Tornadoes tornado1.JPG (52183 bytes). Yesterday Today Music Calendar Musicians MerchandiseMisc. Join The tornadoes fan club. Click here to send us email. http://www.tornadoesband.com/

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100. CNN - Death Toll From Texas Tornadoes Continues To Rise - May 28, 1997 CNN.com http://www.cnn.com/WEATHER/9705/28/tornado.update/

Death toll from Texas tornadoes continues to rise 'They're going to have to bury so many people' May 28, 1997 Web posted at: 5:00 a.m. EST JARRELL, Texas (CNN) Tornadoes ravaged four central Texas counties from Waco to Austin on Tuesday, destroying an entire subdivision in Jarrell where at least 34 people died and scores more were hurt. Dozens of people were forced into makeshift shelters at Jarrell, a small town 40 miles north of Austin that was nearly wiped out by a tornado eight years ago. "We've got nothing left except piles of debris," said Richard Elliot, chief deputy sheriff for Williamson County. He said several people were missing. Tornado in Texas (2.7M/34 sec. large frame QuickTime movie (1.4M/34 sec. small frame QuickTime movie In Austin, officials said one resident drowned in flash flooding. In addition, one person was killed when a tornado destroyed two homes around Lake Travis, city spokesman Carlos Cordova told CNN. Williamson County Communications Director Geniva Simpson told CNN at least 32 people were killed in the Double Creek Estates subdivision in the northwest part of Jarrell. Searchers sift through wreckage Hearses trickled into Jarrell late Tuesday as rescue workers retrieved bodies from the rubble in the fading evening light. At least three of the town's residents were hospitalized in critical condition.

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