News

Colder temperatures return to the central and eastern U.S. and winter holds a bit longer across the north.

A strong cold front is forecast to reach the East Coast by Friday morning, dropping temperatures on the order of 15 to 30 degrees by Saturday. Some lingering showers will be possible behind the front, and snow showers are possible across parts of the Great Lakes and the Northeast on Friday. But tonight, heavy rain with embedded thunderstorms are expected for the Gulf Coast and Florida.
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Hazardous Weather Conditions

Last Update: 423 AM EDT FRI MAR 27 2015

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For More Weather Information:

Key West, FL Local Forecast Office

12NM N Vaca Cut FL

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. CORREECTED TYPO DRY TORTUGAS

Synopsis: A COLD FRONT IS MOVING SOUTHWARD ACROSS THE EASTERN GULF OF MEXICO AND WILL PASS THROUGH THE KEYS AREA EARLY SATURDAY MORNING. CONVECTION OVER THE GULF WILL SEND OUTFLOWS TOWARD THE AREA THROUGH THE DAY WITH A GRADUALLY INCREASING CHANCE FOR SHOWERS THIS MORNING...AND SOME ISOLATED THUNDERSTORMS MAY CROSS THE AREA LATE THIS AFTERNOON. A ROBUST AREA OF HIGH PRESSURE WILL FOLLOW THE FRONT...FRESHENING WINDS WHILE TURNING THEM AROUND THE COMPASS ROSE FROM SOUTH THROUGH NORTH BY SATURDAY MORNING. A SMALL CRAFT ADVISORY WILL ALMOST CERTAINLY BE REQUIRED FOR THE AFTERNOON FORECAST. AS THE FRONT MOVES PAST...EXPECT FRESH TO STRONG SUSTAINED WINDS WITH HIGHER GUSTS THROUGH SATURDAY NIGHT ON ALL KEYS WATERS...AND POSSIBLY THROUGH SUNDAY OVER THE STRAITS OF FLORIDA. BY SUNDAY NIGHT ALL ADVISORY AND CAUTIONARY STATEMENTS SHOULD BE RESCINDED...AND NONE WILL BE REQUIRED THROUGH WEDNESDAY.

THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM CURRENT...AS OF MARCH 25...

46 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 26 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 8 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 2 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. LESS THAN 1 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 4 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 6 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 12 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

Today
Southwest winds near 15 knots...becoming west to northwest near 20 knots in the afternoon. Seas building to 1 to 3 feet. Nearshore waters a moderate chop...becoming rough. Scattered showers in the morning...then numerous showers and isolated thunderstorms in the afternoon.
Tonight
Northwest winds near 20 knots...becoming north and increasing to 20 to 25 knots. Seas 2 to 4 feet. Nearshore waters rough...becoming very rough. Numerous showers and isolated thunderstorms in the evening...then scattered showers after midnight.
Saturday
North winds 20 to 25 knots early...decreasing to near 15 knots in the afternoon. Seas 2 to 4 feet. Nearshore waters very rough...becoming a moderate chop.
Saturday Night
North to northeast winds near 15 knots. Seas 1 to 3 feet. Nearshore waters a moderate chop.
Sunday
Northeast winds near 15 knots. Seas 1 to 3 feet. Nearshore waters a moderate chop.
Sunday Night
Northeast winds near 15 knots. Seas 1 to 3 feet. Nearshore waters a moderate chop.
Monday Through Tuesday
Northeast to east winds 10 to 15 knots. Seas 1 foot or less. Nearshore waters a light to moderate chop.
Tuesday Night
East winds near 15 knots. Seas 1 to 2 feet. Nearshore waters a moderate chop.

ABOUT THIS FORECAST

Last Update: 423 AM EDT FRI MAR 27 2015
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