National Weather Service United States Department of Commerce

Cold Front Crossing the Central U.S.

A cold front over the Northern Rockies will move eastward to the Upper Mississippi Valley/Central Plains by Monday. Rain will develop along the boundary over the Upper Midwest and move into the Upper Great Lakes by Monday. Some of the thunderstorms could become severe in portions of Texas through Monday.
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Hazardous Weather Conditions

Last Update: 341 PM EDT SUN APR 20 2014

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Florida Bay including Barnes Sound Blackwater Sound and Buttonwood Sound

Marine Zone Forecast

SEAS ARE GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.


  • SynopsisAN AREA OF LOW PRESSURE NEAR THE OUTER BANKS WILL MOVE SLOWLY NORTHEASTWARD INTO EARLY NEXT WEEK. AN AREA OF HIGH PRESSURE WILL MOVE INTO THE GULF OF MEXICO AND FLORIDA PENINSULA NEXT WEEK.

    THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM CURRENT...AS OF APRIL 18TH...

    46 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 16 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 14 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 5 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 7 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 14 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 17 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 10 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

    GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.
  • Tonight West to northwest winds 10 to 15 knots...becoming north to northeast after midnight. Bay waters a light to moderate chop.
  • Monday And Monday Night North to northeast winds around 10 knots. Bay waters a light chop. Isolated showers monday night.
  • Tuesday Variable winds 5 to 10 knots. Bay waters smooth to a light chop.
  • Tuesday Night Mainly north winds 5 to 10 knots. Bay waters smooth to a light chop.
  • Wednesday Variable winds 5 to 10 knots. Bay waters smooth to a light chop.
  • Wednesday Night Northeast to east winds around 10 knots. Bay waters a light chop. Isolated showers.
  • Thursday Through Friday Night East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.








Additional Forecasts and Information

Zone Area Forecast for Florida Bay including Barnes Sound Blackwater Sound and Buttonwood Sound