949
FZUS52 KKEY 041045 AAA
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS...UPDATED
NATIONAL WEATHER SERVICE KEY WEST FL
645 AM EDT MON MAY 4 2026
UPDATED TO LOWER FIRST PERIOD THUNDER CHANCE
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.
GMZ005-042245-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
645 AM EDT MON MAY 4 2026
SYNOPSIS
ACTIVE CONVECTION AND A WEAK FRONTAL BOUNDARY ACROSS
THE KEYS WILL RESULT IN LIGHT AND VARYING BREEZES BECOMING
PREDOMINANTLY NORTHERLY THIS MORNING. THE STRONGER SHOWERS AND
THUNDERSTORMS WILL BE CAPABLE OF STRONG GUSTY WINDS, LOCALLY
HIGHER SEAS, AT TIMES FREQUENT LIGHTNING STRIKES, AND BLINDING
DOWNPOURS. THE ACTIVE PATTERN WILL GRADUALLY CALM DOWN OVER THE
NEXT 24 HOURS. WINDS WILL THEN SHIFT NORTH TO NORTHEAST AS THE
BOUNDARY STARTS WASHING OUT ACROSS THE FLORIDA STRAITS. WINDS WILL
REMAIN LIGHT AND VARYING TOMORROW INTO TOMORROW NIGHT DUE TO THE
LINGERING REMNANT BOUNDARY. BY MID WEEK THE WESTERN FLANK OF A
BROAD ATLANTIC RIDGE WILL MOVE ACROSS FLORIDA AND ESTABLISH A MORE
NORMAL LIGHT TO GENTLE EAST TO SOUTHEASTERLY FLOW.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF APRIL 28...
16 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.
10 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.
9 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.
9 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.
12 NM SOUTHEAST OF SOMBRERO KEY LIGHT...OFF MARATHON.
10 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.
6 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.
6 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.
GMZ031-042245-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
645 AM EDT MON MAY 4 2026
TODAY
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING NORTH NEAR 10
KNOTS LATE. BAY WATERS SMOOTH TO A LIGHT CHOP, BECOMING A LIGHT
CHOP LATE. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS.
TONIGHT
NORTH WINDS NEAR 10 KNOTS, BECOMING NORTHEAST. BAY
WATERS A LIGHT CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
TUESDAY
EAST WINDS NEAR 10 KNOTS, BECOMING SOUTH 5 TO 10 KNOTS
IN THE AFTERNOON. BAY WATERS A LIGHT CHOP, BECOMING SMOOTH TO A
LIGHT CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
TUESDAY NIGHT
WINDS BECOMING EAST TO SOUTHEAST 5 TO 10 KNOTS.
BAY WATERS SMOOTH TO A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS, INCREASING TO
5 TO 10 KNOTS IN THE AFTERNOON. BAY WATERS SMOOTH, BECOMING SMOOTH
TO A LIGHT CHOP.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. BAY
WATERS A LIGHT CHOP.
THURSDAY
SOUTHEAST TO SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS
SMOOTH TO A LIGHT CHOP.
THURSDAY NIGHT
SOUTHEAST WINDS NEAR 5 KNOTS. BAY WATERS
SMOOTH.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH TO A LIGHT
CHOP.
FRIDAY NIGHT
SOUTHEAST TO SOUTH WINDS NEAR 5 KNOTS. BAY WATERS
SMOOTH.
GMZ032-035-042245-
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-
645 AM EDT MON MAY 4 2026
TODAY
NORTHWEST WINDS 5 TO 10 KNOTS, BECOMING NORTH. SEAS 1 TO
2 FEET. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
NORTH TO NORTHEAST WINDS 5 TO 10 KNOTS, BECOMING
NORTHEAST TO EAST. SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH
TO A LIGHT CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
TUESDAY
EAST WINDS 5 TO 10 KNOTS, BECOMING SOUTH TO SOUTHWEST
IN THE AFTERNOON. SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH TO
A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
WINDS BECOMING NORTH TO NORTHEAST NEAR 5 KNOTS
EARLY. WINDS THEN BECOMING EAST LATE. SEAS 1 FOOT OR LESS.
NEARSHORE WATERS SMOOTH. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT
OR LESS. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS INCREASING TO NEAR 10
KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS BECOMING A LIGHT
CHOP.
THURSDAY
SOUTHEAST TO SOUTH WINDS 5 TO 10 KNOTS. SEAS 1 FOOT
OR LESS. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP.
THURSDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS. SEAS
1 FOOT OR LESS. NEARSHORE WATERS SMOOTH.
FRIDAY
SOUTH WINDS NEAR 5 KNOTS. SEAS 1 FOOT OR LESS.
NEARSHORE WATERS SMOOTH.
FRIDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 5 KNOTS, BECOMING
SOUTHEAST AFTER MIDNIGHT. SEAS 1 FOOT OR LESS. NEARSHORE WATERS
SMOOTH.
GMZ042>044-042245-
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-
645 AM EDT MON MAY 4 2026
TODAY
VARIABLE WINDS 5 TO 10 KNOTS, BECOMING NORTH NEAR 10
KNOTS. SEAS 1 FOOT, EXCEPT 2 TO 3 FEET WEST OF COSGROVE SHOAL
LIGHT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP, BECOMING A LIGHT
CHOP. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS NEAR 10 KNOTS, DECREASING TO 5
TO 10 KNOTS. SEAS 1 TO 2 FEET. NEARSHORE WATERS A LIGHT CHOP,
BECOMING SMOOTH TO A LIGHT CHOP. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS, BECOMING SOUTH
IN THE AFTERNOON. SEAS AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A
LIGHT CHOP, BECOMING SMOOTH. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
TUESDAY NIGHT
VARIABLE WINDS NEAR 5 KNOTS, BECOMING EAST. SEAS
AROUND 1 FOOT. NEARSHORE WATERS SMOOTH. A SLIGHT CHANCE OF
SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND
1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS
AROUND 1 FOOT. NEARSHORE WATERS A LIGHT CHOP.
THURSDAY
SOUTHEAST TO SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND
1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP.
THURSDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS. SEAS
AROUND 1 FOOT. NEARSHORE WATERS SMOOTH.
FRIDAY
SOUTHEAST WINDS NEAR 5 KNOTS. SEAS AROUND 1 FOOT.
NEARSHORE WATERS SMOOTH.
FRIDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS. SEAS AROUND
1 FOOT. NEARSHORE WATERS SMOOTH.
GMZ052>055-072>075-042245-
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-
645 AM EDT MON MAY 4 2026
TODAY
VARIABLE WINDS 5 TO 10 KNOTS, BECOMING NORTH TO
NORTHEAST NEAR 10 KNOTS. SEAS 2 TO 3 FEET. WAVE DETAIL:
NORTHWEST 2 FEET AT 7 SECONDS AND NORTHEAST 2 FEET AT 7 SECONDS. A
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
NORTHEAST WINDS 5 TO 10 KNOTS, BECOMING VARIABLE NEAR
5 KNOTS. SEAS 2 TO 3 FEET. WAVE DETAIL: NORTHWEST 2 FEET AT 6
SECONDS AND EAST 2 FEET AT 7 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
VARIABLE WINDS NEAR 5 KNOTS, BECOMING SOUTH. SEAS 1 TO
2 FEET. WAVE DETAIL: NORTH TO NORTHEAST 2 FEET AT 6 SECONDS. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
TUESDAY NIGHT
VARIABLE WINDS NEAR 5 KNOTS, BECOMING EAST 5 TO
10 KNOTS. SEAS 1 TO 2 FEET. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 1 TO 2
FEET.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS 1
TO 2 FEET.
THURSDAY
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET.
THURSDAY NIGHT
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS
1 TO 2 FEET.
FRIDAY AND FRIDAY NIGHT
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS.
SEAS AROUND 1 FOOT. SCT025
GMZ033-034-042245-
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-
645 AM EDT MON MAY 4 2026
TODAY
NORTHWEST WINDS NEAR 10 KNOTS,BECOMING NORTH TO
NORTHEAST. SEAS 2 TO 3 FEET. WAVE DETAIL: NORTHWEST 2 FEET AT 6
SECONDS. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS, BECOMING EAST
5 TO 10 KNOTS AFTER MIDNIGHT. SEAS AROUND 2 FEET. WAVE DETAIL:
NORTH TO NORTHEAST 2 FEET AT 5 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
TUESDAY
EAST WINDS 5 TO 10 KNOTS, BECOMING VARIABLE NEAR 5
KNOTS. SEAS 1 TO 2 FEET. WAVE DETAIL: NORTH 2 FEET AT 5 SECONDS.
A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 5 KNOTS, BECOMING
EAST AFTER MIDNIGHT. SEAS AROUND 1 FOOT. A SLIGHT CHANCE OF
SHOWERS.
WEDNESDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND
1 FOOT.
WEDNESDAY NIGHT
EAST TO SOUTHEAST WINDS INCREASING TO NEAR 10
KNOTS. SEAS AROUND 1 FOOT.
THURSDAY
SOUTHEAST TO SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 1
FOOT.
THURSDAY NIGHT
NORTHEAST WINDS NEAR 5 KNOTS, BECOMING EAST TO
SOUTHEAST AFTER MIDNIGHT. SEAS AROUND 1 FOOT.
FRIDAY
SOUTHEAST WINDS NEAR 5 KNOTS. SEAS 1 FOOT OR LESS.
FRIDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 5 KNOTS, BECOMING
SOUTHEAST AFTER MIDNIGHT. SEAS 1 FOOT OR LESS. A SLIGHT CHANCE OF
SHOWERS.
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