Coastal Waters Forecast
Issued by NWS

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000
FZUS52 KKEY 230830
CWFKEY

COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
430 AM EDT THU MAR 23 2017

FLORIDA BAY...HAWK CHANNEL AND STRAITS OF FLORIDA FROM OCEAN REEF TO
SOUTH OF DRY TORTUGAS...AND THE EXTREME SOUTHEASTERN GULF OF
MEXICO...INCLUDING THE FLORIDA KEYS NATIONAL MARINE SANCTUARY

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.

GMZ005-231430-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
430 AM EDT THU MAR 23 2017

.SYNOPSIS...A SPRAWLING HIGH PRESSURE SYSTEM WILL BUILD FROM
EASTERN CANADA TO CUBA TODAY AND TONIGHT. AS A CONSEQUENCE...
STRONG NORTHEAST TO EAST BREEZES WILL DEVELOP ACROSS KEYS COASTAL
WATERS THIS EVENING...AND PERSIST THROUGH EARLY SATURDAY. THE
LARGE AND STRONG HIGH PRESSURE SYSTEM WILL WEAKEN SLOWLY...AS IT
MIGRATES OVER THE WESTERN NORTH ATLANTIC SATURDAY NIGHT THROUGH
MONDAY.

THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF MARCH
21...

42 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.
26 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.
21 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.
21 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.
20 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON.
12 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.
11 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.
 9 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

$$

GMZ031-231430-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
430 AM EDT THU MAR 23 2017

...SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TONIGHT...

.TODAY...NORTH WINDS NEAR 10 KNOTS BECOMING NORTHEAST TO EAST AND
INCREASING TO NEAR 15 KNOTS IN THE AFTERNOON. ISOLATED SHOWERS
AND THUNDERSTORMS DEVELOPING IN THE AFTERNOON.
.TONIGHT...NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25 KNOTS.
BAY WATERS BECOMING VERY ROUGH. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS.
.FRIDAY...EAST WINDS 20 TO 25 KNOTS. BAY WATERS VERY ROUGH.
SCATTERED SHOWERS.
.FRIDAY NIGHT...EAST WINDS NEAR 20 KNOTS. BAY WATERS ROUGH.
ISOLATED SHOWERS.
.SATURDAY...EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY.
ISOLATED SHOWERS.
.SATURDAY NIGHT AND SUNDAY...NORTHEAST TO EAST WINDS NEAR
15 KNOTS. BAY WATERS A MODERATE CHOP. ISOLATED SHOWERS.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...EAST WINDS NEAR 15 KNOTS.
BAY WATERS A MODERATE CHOP.

$$

GMZ032-035-231430-
BAYSIDE AND GULF SIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE
BRIDGE-
GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON
SHOAL OUT TO 5 FATHOMS-
430 AM EDT THU MAR 23 2017

...SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TONIGHT...

.TODAY...NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST IN
THE AFTERNOON. SEAS 1 TO 2 FEET. NEARSHORE WATERS A LIGHT TO
MODERATE CHOP. ISOLATED SHOWERS AND THUNDERSTORMS DEVELOPING LATE
NEAR THE MAINLAND.
.TONIGHT...NORTHEAST TO EAST WINDS NEAR 15 KNOTS EARLY...
INCREASING TO 20 TO 25 KNOTS. SEAS BUILDING TO 2 TO 3 FEET...
EXCEPT WEST OF THE MARQUESAS KEYS SEAS BUILDING TO 4 TO 5 FEET.
NEARSHORE WATERS A MODERATE CHOP EARLY...BECOMING VERY ROUGH
OVERNIGHT. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
.FRIDAY...EAST WINDS 20 TO 25 KNOTS. SEAS 2 TO 3 FEET...EXCEPT
WEST OF THE MARQUESAS KEYS SEAS 4 TO 5 FEET. NEARSHORE WATERS
VERY ROUGH. SCATTERED SHOWERS.
.FRIDAY NIGHT...EAST WINDS NEAR 20 KNOTS. SEAS 2 TO 4 FEET.
NEARSHORE WATERS ROUGH. ISOLATED SHOWERS.
.SATURDAY...EAST WINDS NEAR 20 KNOTS EARLY...DECREASING TO NEAR 15
KNOTS IN THE AFTERNOON. SEAS 2 TO 4 FEET EARLY...SUBSIDING TO 1 TO
3 FEET. NEARSHORE WATERS ROUGH EARLY...BECOMING A MODERATE CHOP IN
THE AFTERNOON. ISOLATED SHOWERS.
.SATURDAY NIGHT AND SUNDAY...EAST WINDS NEAR 15 KNOTS. SEAS 1 TO 2
FEET. NEARSHORE WATERS A MODERATE CHOP. ISOLATED SHOWERS.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...EAST WINDS NEAR 15 KNOTS.
SEAS 1 TO 2 FEET. NEARSHORE WATERS A MODERATE CHOP.

$$

GMZ042>044-231430-
HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF-
HAWK CHANNEL FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT
TO THE REEF-
HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL
OUT TO THE REEF-
430 AM EDT THU MAR 23 2017

...SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TONIGHT...

.TODAY...NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS THIS
MORNING...BECOMING NORTHEAST TO EAST AND INCREASING TO NEAR 15
KNOTS IN THE AFTERNOON. SEAS 1 TO 2 FEET. NEARSHORE WATERS A
LIGHT TO MODERATE CHOP. ISOLATED SHOWERS AND THUNDERSTORMS
DEVELOPING LATE.
.TONIGHT...NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25 KNOTS.
SEAS 2 TO 3 FEET EARLY...BUILDING TO 3 TO 5 FEET OVERNIGHT.
NEARSHORE WATERS BECOMING VERY ROUGH. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS.
.FRIDAY...EAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 6 FEET. NEARSHORE
WATERS VERY ROUGH. SCATTERED SHOWERS.
.FRIDAY NIGHT...EAST WINDS 20 TO 25 KNOTS. SEAS 4 TO 6 FEET.
NEARSHORE WATERS VERY ROUGH. ISOLATED SHOWERS.
.SATURDAY...EAST WINDS NEAR 20 KNOTS. SEAS 3 TO 5 FEET. NEARSHORE
WATERS ROUGH. ISOLATED SHOWERS.
.SATURDAY NIGHT AND SUNDAY...NORTHEAST TO EAST WINDS 15 TO
20 KNOTS. SEAS 2 TO 4 FEET. NEARSHORE WATERS CHOPPY. ISOLATED
SHOWERS.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...EAST WINDS NEAR 15 KNOTS.
SEAS 2 TO 3 FEET. NEARSHORE WATERS A MODERATE CHOP.

$$

GMZ052>055-072>075-231430-
STRAITS OF FLORIDA FROM OCEAN REEF TO CRAIG KEY OUT 20 NM-
STRAITS OF FLORIDA FROM CRAIG KEY TO WEST END OF SEVEN MILE
BRIDGE OUT 20 NM-
STRAITS OF FLORIDA FROM WEST END OF SEVEN MILE BRIDGE TO SOUTH OF
HALFMOON SHOAL OUT 20 NM-
STRAITS OF FLORIDA FROM HALFMOON SHOAL TO 20 NM WEST OF DRY
TORTUGAS OUT 20 NM-
STRAITS OF FLORIDA FROM OCEAN REEF TO CRAIG KEY 20 TO 60 NM OUT-
STRAITS OF FLORIDA FROM CRAIG KEY TO WEST END OF SEVEN MILE
BRIDGE 20 TO 60 NM OUT-
STRAITS OF FLORIDA FROM WEST END OF SEVEN MILE BRIDGE TO SOUTH OF
HALFMOON SHOAL 20 TO 60 NM OUT-
STRAITS OF FLORIDA FROM HALFMOON SHOAL TO 20 NM WEST OF DRY
TORTUGAS 20 TO 60 NM OUT-
430 AM EDT THU MAR 23 2017

...SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TONIGHT...

.TODAY...NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS THIS MORNING...
BECOMING NORTHEAST TO EAST AND INCREASING TO NEAR 15 KNOTS IN THE
AFTERNOON. SEAS 2 TO 4 FEET. ISOLATED SHOWERS AND THUNDERSTORMS
DEVELOPING LATE IN THE AFTERNOON...MAINLY NEAR THE UPPER FLORIDA
KEYS.
.TONIGHT...NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25 KNOTS.
SEAS 3 TO 5 FEET BUILDING TO 7 TO 10 FEET AFTER MIDNIGHT.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
.FRIDAY...EAST WINDS 20 TO 25 KNOTS. SEAS 7 TO 10 FEET. SCATTERED
SHOWERS.
.FRIDAY NIGHT...EAST WINDS 20 TO 25 KNOTS. SEAS 7 TO 10 FEET.
ISOLATED SHOWERS.
.SATURDAY...EAST WINDS 20 TO 25 KNOTS...DECREASING TO NEAR 20
KNOTS. SEAS 6 TO 8 FEET. ISOLATED SHOWERS.
.SATURDAY NIGHT...NORTHEAST TO EAST WINDS NEAR 20 KNOTS. SEAS 5 TO
7 FEET. ISOLATED SHOWERS.
.SUNDAY...NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6
FEET. ISOLATED SHOWERS.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...EAST WINDS 15 TO 20 KNOTS.
SEAS 4 TO 5 FEET.

$$

GMZ033-034-231430-
GULF WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE 20 TO 60 NM OUT
AND BEYOND 5 FATHOMS-
GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL-
430 AM EDT THU MAR 23 2017

...SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TONIGHT...

.TODAY...NORTH WINDS NEAR 10 KNOTS...BECOMING EAST. SEAS 1 TO 2
FEET.
.TONIGHT...NORTHEAST TO EAST WINDS NEAR 10 KNOTS EARLY...
INCREASING TO 20 TO 25 KNOTS BEFORE MIDNIGHT. SEAS 1 TO 2 FEET
EARLY...BUILDING TO 4 TO 7 FEET OVERNIGHT. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS.
.FRIDAY...EAST WINDS 20 TO 25 KNOTS. SEAS 4 TO 7 FEET. SCATTERED
SHOWERS.
.FRIDAY NIGHT...EAST WINDS 20 TO 25 KNOTS. SEAS 4 TO 7 FEET.
ISOLATED SHOWERS.
.SATURDAY...EAST WINDS NEAR 20 KNOTS...BECOMING EAST TO SOUTHEAST
AND DECREASING TO 10 TO 15 KNOTS IN THE AFTERNOON. SEAS 4 TO 6
FEET EARLY...SUBSIDING TO 2 TO 4 FEET IN THE AFTERNOON. ISOLATED
SHOWERS.
.SATURDAY NIGHT...EAST WINDS NEAR 15 KNOTS. SEAS 2 TO 4 FEET.
ISOLATED SHOWERS.
.SUNDAY...EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. ISOLATED
SHOWERS.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...EAST WINDS 10 TO 15 KNOTS.
SEAS 2 TO 3 FEET.

$$

KASPER


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