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Young Voices for the Planet DVD in our online store includes 8 films where students speak out and take action on climate change.
Illustrated tornado from the book The Wizard of Oz
© W. R. Wright, Piglet Press Inc. (www.halcyon.com/piglet/)

Tornado Notification

Tornadoes are very dangerous. This is why it's important to know when they are going to form. Forecastors at the National Weather Service are always looking for storms that could pop up. Nobody knows exactly how tornadoes form, but they do know what conditions they need in order to form. When the conditions are right for tornadoes, forecastors issue a tornado watch.

Forecastors will issue a tornado warning when they know a tornado is forming or has already formed. They train tornado spotters to go out and look for tornadoes. If a spotter sees a tornado, the Weather Service will issue a warning. Another tool meteorologists have for forecasting tornadoes is radar. The may issue a warning based on the radar picture if a tornado looks like it's starting.

You can hear about a warning different ways. Most cities have tornado sirens that go off if there's a warning. Also, you will hear about warnings on television or radio.

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The Fall 2009 issue of The Earth Scientist, which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earth’s ancient atmosphere, is available in our online store.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF