776
FZUS52 KKEY 182019
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
419 PM EDT MON MAY 18 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.
GMZ005-190830-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
419 PM EDT MON MAY 18 2026
SYNOPSIS
SURFACE HIGH PRESSURE CENTERED NEAR BERMUDA WILL
CONTINUE TO PROMOTE MODERATE TO FRESH EAST TO SOUTHEAST BREEZES
THROUGH THE NEXT COUPLE OF DAYS. HIGHEST BREEZES WILL PREVAIL
THROUGH TUESDAY EVENING. BREEZES THEN UNDERGO A VERY SLOW
SLACKENING PROCESS WITH PEAKS EXPECTED DURING THE EVENINGS AND
LULLS DURING THE DAY. RAIN AND THUNDER CHANCES WILL REMAIN ABOVE
NORMAL THROUGH MUCH OF THE WEEK.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF MAY 12...
35 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.
9 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.
6 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.
7 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.
6 NM SOUTHEAST OF SOMBRERO KEY LIGHT...OFF MARATHON.
6 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.
4 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.
GMZ031-190830-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
419 PM EDT MON MAY 18 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TONIGHT
EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. A CHANCE
OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
EAST WINDS 15 TO 20 KNOTS EARLY, DECREASING TO NEAR 15
KNOTS. BAY WATERS CHOPPY, BECOMING A MODERATE CHOP. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY NIGHT
EAST WINDS NEAR 15 KNOTS. BAY WATERS A MODERATE
CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
WEDNESDAY AND WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. BAY
WATERS A LIGHT TO MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS, DECREASING TO NEAR 10 KNOTS.
BAY WATERS A LIGHT TO MODERATE CHOP, BECOMING A LIGHT CHOP. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH TO
A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS.
FRIDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. BAY WATERS
SMOOTH TO A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
FRIDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. BAY WATERS
A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS.
SATURDAY
SOUTHEAST WINDS NEAR 10 KNOTS. BAY WATERS A LIGHT
CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
SATURDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS. BAY
WATERS A LIGHT TO MODERATE CHOP. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS.
GMZ032-035-190830-
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-
419 PM EDT MON MAY 18 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TONIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET. NEARSHORE
WATERS CHOPPY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
TUESDAY
EAST WINDS 15 TO 20 KNOTS, DECREASING TO NEAR 15
KNOTS. SEAS AROUND 2 FEET, EXCEPT 2 TO 3 FEET WEST OF THE
MARQUESAS KEYS. NEARSHORE WATERS CHOPPY, BECOMING A MODERATE
CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY NIGHT
EAST WINDS NEAR 15 KNOTS. SEAS SUBSIDING TO 1 TO
2 FEET. NEARSHORE WATERS A MODERATE CHOP. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF THUNDERSTORMS.
WEDNESDAY AND WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS
1 TO 2 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A CHANCE
OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
THURSDAY
EAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2 FEET. NEARSHORE
WATERS A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS
AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. A SLIGHT
CHANCE OF SHOWERS.
FRIDAY AND FRIDAY NIGHT
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS.
SEAS AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
SATURDAY
SOUTHEAST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.
NEARSHORE WATERS A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
SATURDAY NIGHT
EAST TO SOUTHEAST WINDS INCREASING TO 10 TO 15
KNOTS. SEAS BUILDING TO 1 TO 2 FEET. NEARSHORE WATERS BECOMING A
LIGHT TO MODERATE CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
GMZ042>044-190830-
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-
419 PM EDT MON MAY 18 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TONIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS CHOPPY. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. NEARSHORE WATERS A MODERATE CHOP. A CHANCE
OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY NIGHT
EAST WINDS 15 TO 20 KNOTS, DECREASING TO NEAR 15
KNOTS. SEAS 2 TO 3 FEET. NEARSHORE WATERS CHOPPY, BECOMING A
MODERATE CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
WEDNESDAY
EAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 2 FEET, EXCEPT 2
TO 3 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS A LIGHT TO
MODERATE CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
WEDNESDAY NIGHT
EAST WINDS NEAR 15 KNOTS, DECREASING TO 10 TO
15 KNOTS. SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET WEST OF THE
MARQUESAS KEYS. NEARSHORE WATERS A MODERATE CHOP, BECOMING A LIGHT
TO MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY
EAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2 FEET. NEARSHORE
WATERS A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS 1
TO 2 FEET. NEARSHORE WATERS A LIGHT CHOP. A SLIGHT CHANCE OF
SHOWERS.
FRIDAY
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND 1
FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
FRIDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS
AROUND 1 FOOT, EXCEPT BUILDING TO 1 TO 2 FEET WEST OF THE
MARQUESAS KEYS. NEARSHORE WATERS A LIGHT CHOP. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
SATURDAY
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO
2 FEET. NEARSHORE WATERS A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS.
SATURDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS
1 TO 2 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A CHANCE
OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
GMZ052>055-072>075-190830-
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-
419 PM EDT MON MAY 18 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TONIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET,
OCCASIONALLY TO 8 FEET. WAVE DETAIL: EAST 6 FEET AT 6 SECONDS. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. WAVE DETAIL: EAST 5 FEET AT 6 SECONDS. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY NIGHT
EAST WINDS 15 TO 20 KNOTS, DECREASING TO NEAR 15
KNOTS. SEAS 3 TO 4 FEET, OCCASIONALLY TO 5 FEET. WAVE DETAIL:
EAST 4 FEET AT 5 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
WEDNESDAY
EAST WINDS NEAR 15 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
WEDNESDAY NIGHT
EAST WINDS NEAR 15 KNOTS, DECREASING TO 10 TO
15 KNOTS. SEAS 3 TO 4 FEET, OCCASIONALLY TO 5 FEET. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS 2
TO 3 FEET. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
FRIDAY
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS AROUND 2
FEET. A SLIGHT CHANCE OF SHOWERS.
FRIDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
3 FEET. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
SATURDAY
EAST TO SOUTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO
2 FEET. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
SATURDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 2 FEET. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
GMZ033-034-190830-
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-
419 PM EDT MON MAY 18 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION
TONIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: EAST 4 FEET AT 5 SECONDS. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
EAST WINDS 15 TO 20 KNOTS EARLY, DECREASING TO NEAR 15
KNOTS. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET. WAVE DETAIL:
EAST 3 FEET AT 5 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
TUESDAY NIGHT
EAST WINDS NEAR 15 KNOTS, DECREASING TO 10 TO 15
KNOTS. SEAS 2 TO 3 FEET. WAVE DETAIL: EAST 3 FEET AT 4 SECONDS. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
WEDNESDAY
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 2 FEET. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS, DECREASING TO 5 TO 10
KNOTS. SEAS 1 TO 2 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
FRIDAY
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS. SEAS 1 TO 2 FEET.
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
FRIDAY NIGHT AND SATURDAY
EAST TO SOUTHEAST WINDS NEAR 10
KNOTS. SEAS 1 TO 2 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
SATURDAY NIGHT
EAST TO SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS
AROUND 2 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS.
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