Todd Taubman
The warning program uses flags in four colors along with signs to explain the meaning of each color:
Green: Low hazard, calm conditions, exercise caution.
Yellow: Medium hazard, moderate surf and/or currents.
Red: High hazard, high surf and/or strong currents.
Red over Red (2 flags, one on top of the other): Water closed to the public. The lower red flag in the "red-over-red" illustration shows a no swimming logo in white.
Purple: Dangerous marine life."
For additional information, please visit:
http://www.dep.state.fl.us/cmp/programs/flags.htm
Hope there are many "green flag" days on your vacation.