| Site_Assessment_of_Tornado_Threat Informational site for Vortek's Site Assessment of Tornado Threat (SATT 3.0) software. Provides the user with a means of quickly and accurately displaying and analyzing tornado data for any portion o |
| Storm_Chase_News_and_Archives A chronologically organized list of links to reports on and photos of individual tornado and other severe weather events. |
| Tahoe_Twisters Rare photographic collection of waterspouts and home page for GARYK and his unique scenic photography. |
| Tornado_Alley Twisters, tornadoes and Storm photos with educational information. |
| The_Tornado_and_Storm_Research_Organisation Independent and privately supported research body in the United Kingdom focusing on tornadoes and severe local storms. |
| Tornado_General_Information General Information on tornadoes, which includes safety tips and terminology page. |
| Tornado_Links This site has links to news and information about tornados. |
| Tornado_Project_Online! A company that researches, compiles and makes tornado information available to tornado and severe weather enthusiasts, the public, the meteorological community and emergency management officials in th |
| Tornadoes_and_Tornado_Research A comprehensive website on tornadoes with information on how tornadoes form, and what to do when a tornado strikes. Also featured pictures of tornadic damage, information on current tornado research, |
| Turn!_Turn!_Turn! Scientific America's in-depth look at tornadoes, including multimedia simulations on how they develop. |
| USATODAY_com_-_Understanding_waterspouts A few articles summarizing waterspout formation, location, and safety. |
| A_Waterspout_off_the_Florida_Keys NOAA image of a rare, visible waterspout spotted in the Florida Keys, with explanatory text. |
| AAS_Solar_Physics_Division [Greenbelt, Md] Members, organization, news, meetings, contacts. |
| Analemma Explains the phenomenon - the Sun's apparent path in the sky - including simple animations. |
| The_Analemma_Project An analemma photograph is featured with a detailed description of how it was created. |
| Birmingham_Solar_Oscillations_Network Who they are and what they do. Also includes background information, results, data. |
| Cosmic_and_Heliospheric_Learning_Center Based at NASA/GSFC. Includes sections about the Sun, the cosmic rays and the history of its study. |
| Current_Solar_Data Offers real time images and observations of the Sun from a variety of ground and space sources. |
| Current_Solar_Data An unofficial archive of NOAA GOES solar data. |
| Geospace_Environment_Modeling_(GEM) Offers documents and overview from a series of projects with focus on magnetosphere studies. |
| Global_Oscillation_Network_Group Features project overview and news of a group attempting to measure the oscillations of the Sun's interior. |
| Global_Oscillation_Network_Group_(GONG) Extensive information about the group and the project, which aims to conduct a detailed study of solar internal structure and dynamics using helioseismology. |
| Helio-_and_Asteroseismology Offers introduction to the science of solar oscillations. |
| How_Stuff_Works__Sun In-depth illustrated description of the Sun, its surface, atmosphere, sunspots, solar prominences and solar flares. |
| The_Inconstant_Sun From NASA Science News, experiment on board shuttle mission STS-107 is monitoring the Sun's variable brightness and its link to terrestrial climate change. |
| The_Michelson_Doppler_Imager Provides results and science of an experiment flown on the SOHO spacecraft to study solar oscillations. |
| NASA/Marshall_Solar_Physics The Solar Physics Branch of Marshall Space Flight Center's (MSFC) Space Sciences Laboratory (SSL) is composed of 15 scientists involved in various studies of the physics of the Sun. |
| The_Nine_Planets__Sun General information, some statistical data and links. |
| The_Sun_is_a_Ball_of_Iron Dr. Oliver K. Manuel's posits a new theory of the sun's formation, composition and energy production. |
| Sun_Position_Calculator Calculates Sun azimuth and altitude for a given location and date. |
| Views_of_the_Solar_System__Sun Pictures, animations, general information and data. |
| The_Virtual_Sun Virtual tour of the sun which uses images, diagrams, and movies to illustrate subjects such as solar wind, solar flares, the solar surface and sunspots. |
| The_Virtual_Sun A virtual tour with basic information. Some movies also available. |
| Windows_to_the_Univers__Sun Overview including general information, data, pictures, news, historical and mythological background. |
| YPOP_Tour_of_the_Sun Educational information about the Sun. |
| Animals_of_Africa_-_Hyenas Excerpted from the illustrated book Animals of Africa. |
| Digimorph_-_Crocuta_crocuta_(Spotted_Hyena) Digital Morphology account of the spotted hyena, Crocuta crocuta, featuring CT-generated animations of the skull and commentary by Dr. Pamela Owen. |
| Female_Hyenas_and_Male_Hormones,_A_Strange_Combination Article on the "masculinized" female spotted hyena, and how this strange anatomy both helps and hinders her ability to raise cubs. |
| Hyaenidae Anatomy, behavior and taxonomy of hyenas, from the Animal Diversity Web on the University of Michigan's Museum of Zoology site. Has links to pages for each individual species of hyaenid. |
| Hyena General information about this family and facts on the Spotted Hyena. |
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Please copy/paste the following text to properly cite this HowStuffWorks article:Brain, Marshall, and Robert Lamb. "How Tornadoes Work." 01 April 2000. HowStuffWorks.com. <http://science.howstuffworks.com/tornado.htm> 22 November 2008. Inside this Article Introduction to How Tornadoes Work What Your Bathtub Can Teach You About Tornadoes Tornadoes and Thunderstorms Tornado Ratings Lots More Information See all Climate & Weather articles Violent Storms: Tornadoes 
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Alan R. Moller/Stone/Getty ImagesA tornado hits Pampa, Texas. See more storm pictures.Myths are full of fantastic and destructive creatures. If it's not a city-leveling angel, then it's giants sauntering vengefully into unsuspecting towns. In reality, all the calamities we're liable to encounter are due to natural phenomena and human will. But of all the destructive powers in our world, none resembles the ferocity and form of those mythic monsters quite like tornadoes. These storms descend like a dagger from the clouds. They tower over the tallest buildings like titans. And when they lash out at their surroundings, they often seem to act with malicious, mindful intent. Up NextHow Weather WorksHow Clouds WorkHow Hurricanes WorkSet aside fear and superstition, and you're still faced with one of the most awesome sights in the natural world. These twisting storm columns can reach wind speeds of 318 mph (512 kph) and measure miles across, scarring the Earth and decimating homes and buildings in the process. Yet, in some parts of the world, these powerful storms are a regular occurrence. The United States alone experiences more than 1,000 tornadoes a year, and the storms have been reported on every continent except Antarctica [source: Tarbuck]. While most storms are weak and occur in sparsely populated areas, tornadoes have been known to hit large metropolitan areas, and they have inflicted heavy casualties on many towns and cities. In 1925, the infamous U.S. tristate twister hit parts of Missouri, Illinois and Indiana, claiming 695 lives. In this article, we'll examine how a tornado's vortex works, take a close look at tornado formation and discuss the system we use to classify them. Next Page Inside this Article Introduction to How Tornadoes Work What Your Bathtub Can Teach You About Tornadoes Tornadoes and Thunderstorms Tornado Ratings Lots More Information See all Climate & Weather articles digg_url = 'http://science.howstuffworks.com/tornado.htm'; digg more 
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