University of California
Earthguide: El Nino: Illustrating the Concept
Do you know what happens during a typical El Nino? This overview provides a description, characteristics, and animated maps showing sea surface temperature changes during past El Nino events.
NASA
Nasa: Hurricanes
Learn about hurricanes and how they are created. Features include video animation, the histories of the most devastating hurricanes and topics such as hurricane naming and hurricane study.