Coastal Waters Forecast
Issued by NWS

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000
FZUS52 KKEY 270823
CWFKEY

COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
423 AM EDT FRI MAR 27 2015

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.

GMZ005-271430-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
423 AM EDT FRI MAR 27 2015

.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ADVISORY AND CAUTIONARY STATEMENTS SHOULD BE RESCINDED...AND NONE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.

$$

GMZ031-271430-
FLORIDA BAY INCLUDING BLACKWATER SOUND, BUTTONWOOD SOUND, AND
BARNES SOUND-
423 AM EDT FRI MAR 27 2015

.TODAY...SOUTHWEST WINDS 10 TO 15 KNOTS EARLY...BECOMING WEST TO
NORTHWEST AND INCREASING 15 TO 20 KNOTS LATE IN THE AFTERNOON. BAY
WATERS CHOPPY. SCATTERED SHOWERS IN THE MORNING...THEN NUMEROUS
SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
.TONIGHT...NORTHWEST WINDS 15 TO 20 KNOTS...BECOMING NORTH AND
INCREASING TO 20 TO 25 KNOTS LATE. BAY WATERS CHOPPY...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. BAY WATERS VERY ROUGH...BECOMING A MODERATE
CHOP.
.SATURDAY NIGHT...NORTH WINDS NEAR 15 KNOTS. BAY WATERS A MODERATE
CHOP.
.SUNDAY...NORTHEAST WINDS NEAR 15 KNOTS. BAY WATERS A MODERATE
CHOP.
.SUNDAY NIGHT...NORTHEAST WINDS NEAR 15 KNOTS. BAY WATERS A MODERATE
CHOP.
.MONDAY THROUGH TUESDAY...EAST WINDS 10 TO 15 KNOTS. BAY WATERS A
LIGHT TO MODERATE CHOP
.TUESDAY NIGHT...EAST WINDS NEAR 15 KNOTS. BAY WATERS A MODERATE
CHOP.

$$

GMZ032-035-271430-
BAYSIDE AND GULFSIDE 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-
423 AM EDT FRI MAR 27 2015

.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.

$$

GMZ042>044-271430-
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-
423 AM EDT FRI MAR 27 2015

.TODAY...SOUTH TO SOUTHWEST WINDS NEAR 15 KNOTS...BECOMING WEST TO
NORTHWEST NEAR 20 KNOTS LATE IN THE AFTERNOON. SEAS 1 TO 2
FEET...BUILDING TO 2 TO 4 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 LATE. 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 2 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...EAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 2 FEET.
NEARSHORE WATERS A LIGHT TO MODERATE CHOP.
.TUESDAY NIGHT...EAST WINDS NEAR 15 KNOTS. SEAS 1 TO 3 FEET. NEARSHORE
WATERS A LIGHT TO MODERATE CHOP.

$$

GMZ052>055-072>075-271430-
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-
423 AM EDT FRI MAR 27 2015

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...SOUTHWEST WINDS NEAR 15 KNOTS AND GUSTY EARLY...BECOMING
WEST TO NORTHWEST AND INCREASING TO NEAR 20 KNOTS LATE IN THE
AFTERNOON. SEAS BUILDING TO 4 TO 7 FEET. SCATTERED SHOWERS IN THE
MORNING...THEN NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS IN THE
AFTERNOON.
.TONIGHT...NORTHWEST WINDS NEAR 20 KNOTS...INCREASING TO 20 TO 25
KNOTS. SEAS 4 TO 7 FEET. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS
IN THE EVENING...THEN SCATTERED SHOWERS AFTER MIDNIGHT.
.SATURDAY...NORTH TO NORTHEAST WINDS 20 TO 25 KNOTS
EARLY...DECREASING TO NEAR 15 KNOTS IN THE AFTERNOON. SEAS 4 TO 7
FEET...SUBSIDING TO 3 TO 5 FEET LATE.
.SATURDAY NIGHT...NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO
5 FEET.
.SUNDAY...NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET.
.SUNDAY NIGHT THROUGH TUESDAY...EAST WINDS NEAR 15 KNOTS. SEAS 3 TO 5
FEET.
.TUESDAY NIGHT...EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET.

$$

GMZ033-034-271430-
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-
423 AM EDT FRI MAR 27 2015

.TODAY...SOUTHWEST WINDS 10 TO 15 KNOTS.BECOMING NORTHWEST AND
INCREASING TO NEAR 20 KNOTS IN THE AFTERNOON. SEAS 1 TO 3
FEET...BUILDING TO 3 TO 4 FEET. SCATTERED SHOWERS IN THE
MORNING...THEN NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS IN THE
AFTERNOON.
.TONIGHT...NORTHWEST TO NORTH WINDS 20 TO 25 KNOTS. SEAS 3 TO
5 FEET...BUILDING TO 5 TO 8 FEET AFTER MIDNIGHT. 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 5 TO 8 FEET...SUBSIDING TO 3 TO 5 FEET
LATE.
.SATURDAY NIGHT...NORTH TO NORTHEAST WINDS NEAR 15 KNOTS AND GUSTY.
SEAS 3 TO 5 FEET.
.SUNDAY...NORTHEAST WINDS NEAR 15 KNOTS. SEAS 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHEAST TO EAST WINDS NEAR 15 KNOTS. SEAS 2 TO 4
FEET.
.MONDAY THROUGH TUESDAY...NORTHEAST TO EAST WINDS 10 TO 15 KNOTS.
SEAS 2 TO 3 FEET.
.TUESDAY NIGHT...EAST WINDS NEAR 15 KNOTS. SEAS 2 TO 4 FEET.

$$

BWC



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