Heavy rain, mountain snow and strong winds in the western U.S. this week

The western U.S. will experience active weather yet again this week as significant Pacific moisture brings rain and mountain snow to the region. This heavy rain will bring flood concerns to parts of WA, OR and CA. Very heavy snow is possible in the Sierra, Cascades, Great Basin and parts of the northern Rockies.
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Hazardous Weather Conditions

Last Update: 421 AM EST WED JAN 18 2017

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Key West, FL Local Forecast Office

3NM NNE Florida Bay 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: HIGH SURFACE PRESSURE WILL EXTEND ACROSS NORTHERN FLORIDA TODAY. THIS HIGH PRESSURE WILL RETREAT EASTWARD TONIGHT THROUGH THURSDAY NIGHT. AN AREA OF HIGH PRESSURE WILL CENTER JUST EAST OF THE BAHAMAS FRIDAY THROUGH SUNDAY. A COLD FRONT LIKELY WILL APPROACH THE FLORIDA KEYS SUNDAY NIGHT.

THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF JANUARY 16...

32 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 39 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 34 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 15 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 13 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 7 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 5 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 3 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

Today
East to southeast winds near 10 knots. Bay waters a light chop.
Tonight And Thursday
East to southeast winds near 10 knots. bay waters a light chop.
Thursday Night And Friday
Southeast winds near 10 knots. Bay waters a light chop.
Friday Night And Saturday
Southeast winds near 10 knots. Bay waters a light chop.
Saturday Night
Southeast to south winds near 10 knots...increasing to near 15 knots by midnight. Bay waters a light chop...becoming a moderate chop.
Sunday
South winds 15 to 20 knots. Bay waters choppy. Isolated showers.
Sunday Night
South to southwest winds near 20 knots. Bay waters rough. Scattered showers and isolated thunderstorms.
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ABOUT THIS FORECAST

Last Update: 421 AM EST WED JAN 18 2017
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