189
FZUS52 KKEY 092035
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
435 PM EDT MON MAR 9 2026
FLORIDA BAY, HAWK CHANNEL AND STRAITS OF FLORIDA FROM OCEAN REEF
TO SOUTH OF DRY TORTUGAS, AND THE EXTREME SOUTHEASTERN GULF OF
AMERICA, 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.
WAVE DETAIL WILL INCLUDE DETAILS ABOUT THE PERIOD AND DIRECTION
OF ORIGIN FOR THE HIGHEST ENERGY WAVES. LONG-PERIOD SWELLS COMING
FROM A DIFFERENT DIRECTION THAN THE WIND WOULD BE INCLUDED IN THE
WAVE DETAIL.
GMZ005-100845-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
435 PM EDT MON MAR 9 2026
SYNOPSIS
HIGH PRESSURE IS CENTERED NEAR BERMUDA WITH THE
WESTERN PERIPHERY OF THIS RIDGE EXTENDING WEST INTO FLORIDA AND
THE GULF. AS THE HIGH RETREATS FURTHER INTO THE ATLANTIC THIS
WEEK, BREEZES WILL SHIFT TO THE EAST TO SOUTHEAST. A DECAYING
FRONTAL BOUNDARY IS ANTICIPATED TO DRIFT SOUTHEASTWARD ACROSS THE
GULF LATE WEEK WHICH MAY CREATE FOR A CHAOTIC WIND PATTERN ACROSS
THE FLORIDA KEYS COASTAL WATERS.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF MARCH 7...
55 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.
15 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.
7 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.
8 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.
10 NM SOUTHEAST OF SOMBRERO KEY LIGHT...OFF MARATHON.
8 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.
5 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.
3 NM SOUTHEAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.
GULF STREAM INFORMATION COURTESY OF THE NATIONAL WEATHER SERVICE IN
KEY WEST BASED ON PRODUCTS FROM NASA SPORT AND RTOFS.
GMZ031-100845-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
435 PM EDT MON MAR 9 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS. BAY WATERS A LIGHT TO
MODERATE CHOP. ISOLATED SHOWERS.
TUESDAY
EAST WINDS 10 TO 15 KNOTS. BAY WATERS A LIGHT TO
MODERATE CHOP. ISOLATED SHOWERS.
TUESDAY NIGHT
EAST WINDS NEAR 15 KNOTS. BAY WATERS A MODERATE
CHOP. ISOLATED SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS NEAR 15 KNOTS. BAY WATERS A
MODERATE CHOP. ISOLATED SHOWERS.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS,
BECOMING SOUTHEAST. BAY WATERS A LIGHT TO MODERATE CHOP. ISOLATED
SHOWERS.
THURSDAY
SOUTHEAST TO SOUTH WINDS NEAR 10 KNOTS, BECOMING SOUTH
TO SOUTHWEST AND DECREASING TO 5 TO 10 KNOTS. BAY WATERS A LIGHT
CHOP, BECOMING SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS.
THURSDAY NIGHT
SOUTH TO SOUTHWEST WINDS NEAR 5 KNOTS, BECOMING
SOUTHEAST AND INCREASING TO 5 TO 10 KNOTS. BAY WATERS SMOOTH,
BECOMING SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS.
FRIDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS, BECOMING VARIABLE
NEAR 5 KNOTS. BAY WATERS SMOOTH TO A LIGHT CHOP, BECOMING SMOOTH.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
VARIABLE WINDS NEAR 5 KNOTS, BECOMING NORTH TO
NORTHEAST. BAY WATERS SMOOTH. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY
NORTHEAST TO EAST WINDS NEAR 5 KNOTS, BECOMING EAST TO
SOUTHEAST. BAY WATERS SMOOTH. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY NIGHT
EAST WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH TO
A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.
GMZ032-035-100845-
BAYSIDE AND GULFSIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE
BRIDGE-
GULF OF AMERICA FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON
SHOAL OUT TO 5 FATHOMS-
435 PM EDT MON MAR 9 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 1 FOOT, EXCEPT
1 TO 2 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS A LIGHT
TO MODERATE CHOP. ISOLATED SHOWERS.
TUESDAY
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 1 FOOT, EXCEPT
1 TO 2 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS A LIGHT
TO MODERATE CHOP. ISOLATED SHOWERS.
TUESDAY NIGHT
EAST WINDS NEAR 15 KNOTS. SEAS 1 TO 2 FEET,
EXCEPT BUILDING TO 2 TO 3 FEET WEST OF THE MARQUESAS KEYS.
NEARSHORE WATERS A MODERATE CHOP. ISOLATED SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS NEAR 15 KNOTS. SEAS 1 TO
2 FEET, EXCEPT 2 TO 3 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE
WATERS A MODERATE CHOP. ISOLATED SHOWERS.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS,
BECOMING SOUTHEAST. SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET WEST OF
THE MARQUESAS KEYS. NEARSHORE WATERS A LIGHT TO MODERATE CHOP.
ISOLATED SHOWERS.
THURSDAY
SOUTHEAST TO SOUTH WINDS NEAR 10 KNOTS, BECOMING SOUTH
TO SOUTHWEST 5 TO 10 KNOTS. SEAS AROUND 1 FOOT, EXCEPT SUBSIDING
TO 1 TO 2 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS A
LIGHT CHOP, BECOMING SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS.
THURSDAY NIGHT
VARIABLE WINDS NEAR 5 KNOTS. SEAS 1 FOOT OR
LESS. NEARSHORE WATERS SMOOTH. ISOLATED SHOWERS.
FRIDAY
VARIABLE WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR LESS.
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTHWEST TO NORTH WINDS 5 TO 10 KNOTS, BECOMING
NORTH TO NORTHEAST. SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET WEST OF
THE MARQUESAS KEYS DUE TO A NORTHWEST SWELL. NEARSHORE WATERS
SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY
EAST WINDS NEAR 5 KNOTS. SEAS 1 TO 2 FEET, EXCEPT
2 TO 3 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS SMOOTH.
ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY NIGHT
EAST WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET, EXCEPT
2 TO 3 FEET WEST OF THE MARQUESAS KEY. NEARSHORE WATERS SMOOTH TO
A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.
GMZ042>044-100845-
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-
435 PM EDT MON MAR 9 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. NEARSHORE
WATERS A LIGHT TO MODERATE CHOP. ISOLATED SHOWERS.
TUESDAY
EAST WINDS 10 TO 15 KNOTS, INCREASING TO NEAR 15 KNOTS.
SEAS 2 TO 3 FEET, BUILDING TO 2 TO 4 FEET, OCCASIONALLY TO 5
FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP, BECOMING A
MODERATE CHOP. ISOLATED SHOWERS.
TUESDAY NIGHT
EAST WINDS NEAR 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS A MODERATE CHOP.
ISOLATED SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS NEAR 15 KNOTS. SEAS 2 TO
4 FEET, OCCASIONALLY TO 5 FEET. NEARSHORE WATERS A MODERATE CHOP.
ISOLATED SHOWERS.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 15 KNOTS, BECOMING
SOUTHEAST. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET. NEARSHORE
WATERS A MODERATE CHOP. ISOLATED SHOWERS.
THURSDAY
SOUTHEAST TO SOUTH WINDS NEAR 10 KNOTS, BECOMING
SOUTH TO SOUTHWEST 5 TO 10 KNOTS. SEAS 2 TO 3 FEET, SUBSIDING TO
AROUND 2 FEET. NEARSHORE WATERS A LIGHT CHOP, BECOMING SMOOTH TO A
LIGHT CHOP. ISOLATED SHOWERS.
THURSDAY NIGHT
VARIABLE WINDS NEAR 5 KNOTS, BECOMING EAST TO
SOUTHEAST 5 TO 10 KNOTS. SEAS 1 TO 2 FEET. NEARSHORE WATERS
SMOOTH, BECOMING SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS.
FRIDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS, BECOMING
VARIABLE. SEAS AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT
CHOP. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTHWEST TO NORTH WINDS 5 TO 10 KNOTS, BECOMING
NORTH TO NORTHEAST. SEAS AROUND 1 FOOT, EXCEPT 2 TO 3 FEET WEST
OF COSGROVE SHOAL LIGHT DUE TO A NORTHWEST SWELL. NEARSHORE
WATERS SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY
EAST WINDS NEAR 5 KNOTS. SEAS 1 TO 2 FEET. NEARSHORE
WATERS SMOOTH. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY NIGHT
EAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET.
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND
THUNDERSTORMS.
GMZ052>055-072>075-100845-
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-
435 PM EDT MON MAR 9 2026
TONIGHT
EAST WINDS NEAR 15 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: EAST 3 FEET AT 5 SECONDS.
ISOLATED SHOWERS.
TUESDAY
EAST WINDS NEAR 15 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: EAST 4 FEET AT 5 SECONDS.
ISOLATED SHOWERS.
TUESDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. ISOLATED SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO 5
FEET, OCCASIONALLY TO 6 FEET. ISOLATED SHOWERS.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 15 KNOTS. SEAS
3 TO 4 FEET, OCCASIONALLY TO 5 FEET. ISOLATED SHOWERS.
THURSDAY
SOUTHEAST WINDS 10 TO 15 KNOTS, BECOMING VARIABLE AND
DECREASING TO 5 TO 10 KNOTS. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5
FEET, SUBSIDING TO 2 TO 3 FEET. ISOLATED SHOWERS.
THURSDAY NIGHT
VARIABLE WINDS 5 TO 10 KNOTS, BECOMING EAST TO
SOUTHEAST. SEAS 1 TO 2 FEET. ISOLATED SHOWERS.
FRIDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS, BECOMING VARIABLE.
SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET WEST OF HALFMOON SHOAL LIGHT
DUE TO NORTHWEST SWELL. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS.
FRIDAY NIGHT
NORTHWEST TO NORTH WINDS 5 TO 10 KNOTS, BECOMING
NORTH TO NORTHEAST. SEAS 1 TO 2 FEET, EXCEPT 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET WEST OF HALFMOON SHOAL LIGHT. ISOLATED
SHOWERS AND THUNDERSTORMS.
SATURDAY
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS. SEAS 2 TO
3 FEET. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
SATURDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS 2
TO 4 FEET, OCCASIONALLY TO 5 FEET. ISOLATED SHOWERS AND
THUNDERSTORMS.
GMZ033-034-100845-
GULF OF AMERICA FROM EAST CAPE SABLE TO CHOKOLOSKEE 20 TO 60 NM
OUT AND BEYOND 5 FATHOMS-
GULF OF AMERICA INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL-
435 PM EDT MON MAR 9 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS, BECOMING NORTHEAST TO EAST.
SEAS 1 TO 3 FEET. WAVE DETAIL: EAST 2 FEET AT 3 SECONDS.
TUESDAY
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS, BECOMING EAST.
SEAS 1 TO 3 FEET. WAVE DETAIL: EAST 2 FEET AT 3 SECONDS.
TUESDAY NIGHT
EAST WINDS 10 TO 15 KNOTS, INCREASING TO NEAR 15
KNOTS. SEAS 1 TO 3 FEET, BUILDING TO 2 TO 3 FEET. ISOLATED
SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 3
FEET. ISOLATED SHOWERS.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS,
BECOMING SOUTHEAST. SEAS 1 TO 3 FEET. ISOLATED SHOWERS.
THURSDAY
SOUTHEAST TO SOUTH WINDS NEAR 10 KNOTS, BECOMING
SOUTH TO SOUTHWEST AND DECREASING TO 5 TO 10 KNOTS. SEAS 1 TO 2
FEET. SCATTERED SHOWERS.
THURSDAY NIGHT
WEST TO NORTHWEST WINDS 5 TO 10 KNOTS, BECOMING
NORTH AND DECREASING TO NEAR 5 KNOTS. SEAS AROUND 1 FOOT.
ISOLATED SHOWERS.
FRIDAY
NORTH TO NORTHEAST WINDS NEAR 5 KNOTS. SEAS 1 TO 2
FEET, BUILDING TO 2 TO 4 FEET, OCCASIONALLY TO 5 FEET DUE TO
NORTHWEST SWELL. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTHWEST TO NORTH WINDS 5 TO 10 KNOTS, BECOMING
NORTH TO NORTHEAST. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET DUE
TO NORTHWEST SWELL. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3
FEET. ISOLATED SHOWERS AND THUNDERSTORMS.
SATURDAY NIGHT
EAST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET.
ISOLATED SHOWERS AND THUNDERSTORMS.
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