Earth Observatory Home NASA Earth Observatory Home Data and Images Features News Reference Missions Experiments Search
NASA's Earth Observatory
 Earth Observatory Navigation Bar
Glossary

 Learn about glossary mode

Select a letter below
a·b-c·d·e·f-g·h-k·l-m·n·o·p·q-r·s·t·u-v·w-z·—view all
 

  cyclone An area of low pressure where winds blow counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. See anticyclone, wind.
   

   
Subscribe to the Earth Observatory
About the Earth Observatory
Contact Us
Privacy Policy and Important Notices
Responsible NASA Official: Lorraine A. Remer
Webmaster: Goran Halusa
We're a part of the Science Mission Directorate