036
FZUS52 KKEY 310829
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
429 AM EDT TUE MAR 31 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.
GMZ005-312030-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
429 AM EDT TUE MAR 31 2026
SYNOPSIS
STRONG HIGH PRESSURE ACROSS THE CENTRAL NORTH ATLANTIC
WILL MEANDER EAST FOR SEVERAL DAYS. AS A RESULT, EXPECT EASTERLY
FRESH BREEZES, OCCASIONALLY STRONG, ESPECIALLY IN THE STRAITS TO
PREVAIL THROUGH THE WEEK. BREEZES WILL ALSO OCCASIONALLY PEAK
OVERNIGHT INTO THE MORNING HOURS AND LULL IN THE AFTERNOON AND
EVENING HOURS, ESPECIALLY NORTH OF THE ISLAND CHAIN AND ACROSS THE
SE GULF.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF MARCH 28...
26 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.
38 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.
36 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.
24 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.
20 NM SOUTHEAST OF SOMBRERO KEY LIGHT...OFF MARATHON.
15 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.
7 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.
GMZ031-312030-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
429 AM EDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT
TODAY
EAST WINDS NEAR 20 KNOTS. BAY WATERS ROUGH. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
EAST WINDS NEAR 20 KNOTS, DECREASING TO 15 TO 20
KNOTS. BAY WATERS ROUGH, BECOMING CHOPPY. A SLIGHT CHANCE OF
SHOWERS.
WEDNESDAY
EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. A
SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY.
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY
EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 15 TO 20 KNOTS, INCREASING TO NEAR 20
KNOTS. BAY WATERS CHOPPY, BECOMING ROUGH. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF THUNDERSTORMS.
FRIDAY
EAST WINDS NEAR 20 KNOTS. BAY WATERS ROUGH. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. A
SLIGHT CHANCE OF SHOWERS.
SATURDAY
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. BAY WATERS
CHOPPY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
SATURDAY NIGHT
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS,
DECREASING TO NEAR 15 KNOTS. BAY WATERS CHOPPY, BECOMING A
MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
GMZ032-035-312030-
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-
429 AM EDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT
TODAY
EAST WINDS NEAR 20 KNOTS. SEAS 2 TO 3 FEET, EXCEPT 3 TO 4
FEET, OCCASIONALLY TO 5 FEET WEST OF THE MARQUESAS KEYS.
NEARSHORE WATERS ROUGH. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
EAST WINDS 20 TO 25 KNOTS, DECREASING TO NEAR 20 KNOTS.
SEAS 2 TO 3 FEET, EXCEPT AROUND 4 FEET, OCCASIONALLY TO 5 FEET
WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS VERY ROUGH, BECOMING
ROUGH. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET, EXCEPT
SUBSIDING TO AROUND 3 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE
WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET.
NEARSHORE WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET.
NEARSHORE WATERS CHOPPY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS NEAR 20 KNOTS. SEAS 2 TO 3 FEET,
EXCEPT 3 TO 4 FEET, OCCASIONALLY TO 5 FEET WEST OF THE MARQUESAS
KEYS. NEARSHORE WATERS ROUGH. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS.
FRIDAY
EAST WINDS NEAR 20 KNOTS. SEAS 2 TO 3 FEET, EXCEPT 3 TO
4 FEET, OCCASIONALLY TO 5 FEET WEST OF THE MARQUESAS KEYS.
NEARSHORE WATERS ROUGH. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET,
EXCEPT SUBSIDING TO AROUND 3 FEET WEST OF THE MARQUESAS KEYS.
NEARSHORE WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS.
SATURDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET.
NEARSHORE WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS.
SATURDAY NIGHT
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS,
DECREASING TO NEAR 15 KNOTS. SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET
WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS CHOPPY, BECOMING A
MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
GMZ042>044-312030-
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-
429 AM EDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT
TODAY
EAST WINDS NEAR 20 KNOTS. SEAS 3 TO 4 FEET, OCCASIONALLY
TO 5 FEET. NEARSHORE WATERS ROUGH. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
EAST WINDS 20 TO 25 KNOTS, DECREASING TO NEAR 20 KNOTS.
SEAS 3 TO 4 FEET, OCCASIONALLY TO 5 FEET. NEARSHORE WATERS VERY
ROUGH, BECOMING ROUGH. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS CHOPPY. A SLIGHT CHANCE
OF SHOWERS.
WEDNESDAY NIGHT AND THURSDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 2
TO 4 FEET, OCCASIONALLY TO 5 FEET. NEARSHORE WATERS CHOPPY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS NEAR 20 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS ROUGH. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
FRIDAY
EAST WINDS NEAR 20 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS ROUGH. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS CHOPPY. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
SATURDAY
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4
FEET, OCCASIONALLY TO 5 FEET. NEARSHORE WATERS CHOPPY. A SLIGHT
CHANCE OF SHOWERS.
SATURDAY NIGHT
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS,
DECREASING TO NEAR 15 KNOTS. SEAS 2 TO 3 FEET. NEARSHORE WATERS
CHOPPY, BECOMING A MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
GMZ052>055-072>075-312030-
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-
429 AM EDT TUE MAR 31 2026
..SMALL CRAFT ADVISORY IN EFFECT
TODAY
EAST WINDS 20 TO 25 KNOTS, DECREASING TO NEAR 20 KNOTS.
SEAS 5 TO 8 FEET, OCCASIONALLY TO 10 FEET. WAVE DETAIL: EAST 7
FEET AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
EAST WINDS 20 TO 25 KNOTS, DECREASING TO NEAR 20 KNOTS.
SEAS 5 TO 8 FEET, OCCASIONALLY TO 10 FEET. WAVE DETAIL: EAST 7
FEET AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 7 FEET,
OCCASIONALLY TO 8 FEET. WAVE DETAIL: EAST 6 FEET AT 7 SECONDS. A
SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT AND THURSDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 4
TO 7 FEET, OCCASIONALLY TO 8 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS NEAR 20 KNOTS. SEAS 5 TO 8 FEET,
OCCASIONALLY TO 9 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
FRIDAY AND FRIDAY NIGHT
EAST WINDS NEAR 20 KNOTS. SEAS 5 TO 8
FEET, OCCASIONALLY TO 9 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
SATURDAY
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6
FEET, OCCASIONALLY TO 7 FEET. A SLIGHT CHANCE OF SHOWERS.
SATURDAY NIGHT
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS
3 TO 5 FEET, OCCASIONALLY TO 6 FEET. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS.
GMZ033-034-312030-
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-
429 AM EDT TUE MAR 31 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. WAVE DETAIL: EAST 4 FEET AT 5 SECONDS. A
SLIGHT CHANCE OF SHOWERS.
TONIGHT AND WEDNESDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5
FEET, OCCASIONALLY TO 6 FEET. WAVE DETAIL: EAST 4 FEET AT 5
SECONDS. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT AND THURSDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 3
TO 5 FEET, OCCASIONALLY TO 6 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
FRIDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS, DECREASING TO NEAR 15
KNOTS. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
SATURDAY
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. A SLIGHT
CHANCE OF SHOWERS.
SATURDAY NIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS
2 TO 3 FEET.
MJV
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