Weather

 
Weather Maps
http://rainbow.ldeo.columbia.edu/weather.html
Provides links to weather forecasts and satellite images on the Internet.
 
Tornadoes (at the Whyfiles)
http://whyfiles.org/013tornado/
Find out how a tornado forms. What causes a tornado and how to predict tornados
 
National Hurricane Center
http://www.nhc.noaa.gov/
Contains current and historical hurricane and cyclone information.  There are also links to aircraft reconnaissance sites.
Tornado Project Online
http://tornadoproject.com/
In-depth information, data, and videos on tornadoes. Some information includes FAQs, top tens, stories, and safety.
NASA Earth Observatory
http://earthobservatory.nasa.gov/

The Earth Observatory’s mission is to share with the public the images, stories, and discoveries about climate and the environment that emerge from NASA research, including its satellite missions, in-the-field research, and climate models.