article: Tropical Depression One (2009)
links: Atlantic Ocean QuikSCAT Atlantic hurricane Gulf Stream Tropical Storm Arthur (2008) Wilmington, North Carolina Trough (meteorology) National Hurricane Center North Carolina National Oceanic and Atmospheric Administration Cape Hatteras 2009 Atlantic hurricane season Providence, Rhode Island EDT Subtropical Storm Andrea (2007) UTC Dvorak technique Satellite (artificial) 2007 Atlantic hurricane season Hatteras, North Carolina PDF