National Weather Service United States Department of Commerce

Coastal low to bring gusty winds and periods of heavy rain to New England while moderate to heavy rain is expected to linger in the Pacific Northwest and northern California

A coastal low will slowly intensify before moving out of the New England area. Increasingly heavy rainfall will impact the region through Friday. In addition, winds will increase and seas will become rough as the storm gradually intensifies just off the coast. Out west, a cold front approaching the Pacific Northwest will bring moderate to heavy rain to Washington, Oregon and northern California.
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Hazardous Weather Conditions

Last Update: 934 PM EDT TUE OCT 21 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.


  • SynopsisTHE COMBINATION OF A CONTINENTAL HIGH PRESSURE SYSTEM CENTERED OVER THE EASTERN UNITED STATES AND A TROPICAL LOW PRESSURE AREA CENTERED NEAR THE YUCATAN WILL MAINTAIN A RICH VEIN OF TROPICAL MOISTURE INTO THE FLORIDA KEYS OVERNIGHT THROUGH FRIDAY. A NEARLY STATIONARY FRONTAL ZONE JUST NORTH OF THE FLORIDA KEYS WILL PROVIDE THE FOCUS FOR SEVERAL EPISODES OF HEAVY RAIN OVER SOUTHERN FLORIDA DURING THE NEXT FEW DAYS. THE FRONTAL ZONE WILL MERGE WITH THE TROPICAL LOW PRESSURE AREA IN THE VICINITY OF THE FLORIDA KEYS FRIDAY THROUGH SUNDAY...RESULTING IN FRESHENING NORTHEAST TO EAST BREEZES ACROSS ALL FLORIDA KEYS COASTAL WATERS..

    THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF OCTOBER 20...

    37 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 25 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 25 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 30 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 28 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 16 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 8 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 5 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

    GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.
  • Overnight Northeast to east winds 5 to 10 knots. Bay waters smooth to a light chop. Periods of rain and scattered thunderstorms.
  • Wednesday East winds near 10 knots. Bay waters a light chop. Periods of rain and scattered thunderstorms.
  • Wednesday Night Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop. Periods of rain and scattered thunderstorms.
  • Thursday Northeast to east winds near 15 knots. Bay waters a moderate chop. Periods of rain and scattered thunderstorms.
  • Thursday Night East winds near 15 knots. Bay waters a moderate chop. Rain likely and scattered thunderstorms.
  • Friday East to southeast winds near 15 knots. Bay waters a moderate chop. Numerous showers and scattered thunderstorms.
  • Friday Night Northeast winds near 20 knots. Bay waters rough. Numerous showers and scattered thunderstorms.
  • Saturday North to northeast winds near 20 knots. Bay waters rough. Scattered showers and isolated thunderstorms.
  • Saturday Night Through Sunday Night North to northeast winds 15 to 20 knots. Bay waters choppy. Isolated showers.



Additional Forecasts and Information

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