Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially over western New York where up to two feet is forecast by late Thursday.
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Last Update: 430 AM EST THU FEB 11 2016

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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.

Synopsis: AN AREA OF HIGH PRESSURE WILL MOVE EASTWARD ACROSS THE GULF OF MEXICO TODAY THROUGH FRIDAY. A REINFORCING HIGH PRESSURE AREA THEN WILL BUILD SOUTHEASTWARD...ACROSS THE GULF OF MEXICO AND FLORIDA PENINSULA ON SATURDAY AND SUNDAY.

THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF FEBRUARY 11...

52 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 11 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 4 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 3 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 2 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. LESS THAN 1 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 2 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 6 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

Today
Northeast winds near 15 knots. Seas 2 to 3 feet. nearshore waters a moderate chop.
Tonight
Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop.
Friday
Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop.
Friday Night
North to northeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop.
Saturday
North winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop.
Saturday Night And Sunday
Northeast to east winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore waters choppy.
Sunday Night And Monday
East to southeast winds 15 to 20 knots. Seas 1 to 3 feet. Nearshore waters choppy. Isolated showers.
Monday Night
Southeast to south winds 15 to 20 knots. Seas 1 to 3 feet. Nearshore waters choppy. Isolated showers.
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Last Update: 430 AM EST THU FEB 11 2016
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