http://www.fema.gov/areyouready/hurricanes.shtm
Federal Emergency Management Agency
This section provides information on hurricanes, a type of tropical cyclone, the generic term for a low pressure system that generally forms in the tropics. The section discusses terms associated with a hurricane hazard, measures that can be taken beforehand to avoid or lessen the impact of this event, and what individuals need to do during and after the event to protect themselves.