680
FZUS52 KKEY 171417
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
1017 AM EDT WED SEP 17 2025
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.
GMZ005-180230-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
1017 AM EDT WED SEP 17 2025
SYNOPSIS
AN UNSETTLED WEATHER PATTERN IS IN PLACE ACROSS SOUTHERN FLORIDA,
AND THE RECENT INCREASE IN SHOWERS AND THUNDERSTORMS WILL REMAIN
IN PLACE FOR THE NEXT COUPLE OF DAYS. FRESHENING NORTHEASTERLY TO
EASTERLY BREEZES WILL PEAK LATER TONIGHT, AND SMALL CRAFT SHOULD
EXERCISE CAUTION HEADLINES MAY BE NEEDED, PARTICULARLY ACROSS THE
FLORIDA STRAITS. BREEZES WILL SLACKEN BY TOMORROW, BUT SHOWERS
AND OCCASIONAL THUNDERSTORMS WILL LINGER ACROSS THE AREA THROUGH
THE END OF THE WEEK.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF SEPTEMBER
16...
53 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.
40 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.
32 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.
15 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.
17 NM SOUTHEAST OF SOMBRERO KEY LIGHT...OFF MARATHON.
14 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.
13 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.
9 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.
GMZ031-180230-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
1017 AM EDT WED SEP 17 2025
THIS AFTERNOON
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, BECOMING
NORTHEAST AND INCREASING TO 10 TO 15 KNOTS. BAY WATERS SMOOTH TO A
LIGHT CHOP, BECOMING A LIGHT TO MODERATE CHOP. BAY WATERS ROUGH
AND WINDS HIGHER IN AND NEAR WIDESPREAD SHOWERS AND SCATTERED
THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS, BRIEFLY
INCREASING TO NEAR 15 KNOTS LATE. BAY WATERS A LIGHT TO MODERATE
CHOP, BECOMING A MODERATE CHOP. BAY WATERS ROUGH AND WINDS HIGHER
IN AND NEAR WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS.
THURSDAY
NORTHEAST TO EAST WINDS DECREASING TO NEAR 10 KNOTS.
BAY WATERS BECOMING A LIGHT CHOP. WIDESPREAD SHOWERS AND ISOLATED
THUNDERSTORMS.
THURSDAY NIGHT
NORTHEAST WINDS NEAR 10 KNOTS, DECREASING TO 5
TO 10 KNOTS. BAY WATERS A LIGHT CHOP, BECOMING A SMOOTH TO A
LIGHT CHOP. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY
NORTH TO NORTHEAST WINDS 5 TO 10 KNOTS. BAY WATERS
SMOOTH TO A LIGHT CHOP. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS.
FRIDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. BAY
WATERS A LIGHT CHOP. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS.
SATURDAY THROUGH SUNDAY NIGHT
NORTH TO NORTHEAST WINDS 5 TO 10
KNOTS. BAY WATERS SMOOTH TO A LIGHT CHOP. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS.
GMZ032-035-180230-
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-
1017 AM EDT WED SEP 17 2025
THIS AFTERNOON
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS,
INCREASING TO 10 TO 15 KNOTS. SEAS AROUND 1 FOOT, BUILDING TO 1 TO
2 FEET. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP, BECOMING A LIGHT
TO MODERATE CHOP. WINDS AND SEAS HIGHER IN AND AROUND WIDESPREAD
SHOWERS AND SCATTERED THUNDERSTORMS.
TONIGHT
EAST WINDS 10 TO 15 KNOTS, INCREASING TO NEAR 15 KNOTS.
SEAS 1 TO 2 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP,
BECOMING A MODERATE CHOP. WINDS AND SEAS HIGHER IN AND AROUND
WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS.
THURSDAY
NORTHEAST TO EAST WINDS DECREASING TO 10 TO 15 KNOTS.
SEAS 1 TO 2 FEET. NEARSHORE WATERS BECOMING A LIGHT TO MODERATE
CHOP. WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS.
THURSDAY NIGHT
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. SEAS
1 TO 2 FEET, SUBSIDING TO AROUND 1 FOOT. NEARSHORE WATERS A LIGHT
CHOP. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. SEAS AROUND 1
FOOT. NEARSHORE WATERS A LIGHT CHOP. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. SEAS
AROUND 1 FOOT. NEARSHORE WATERS A LIGHT CHOP. SCATTERED SHOWERS
AND ISOLATED THUNDERSTORMS.
SATURDAY THROUGH SUNDAY
NORTHEAST WINDS 5 TO 10 KNOTS. SEAS
AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS.
SUNDAY NIGHT
VARIABLE WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS.
GMZ042>044-180230-
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-
1017 AM EDT WED SEP 17 2025
THIS AFTERNOON
NORTHEAST TO EAST WINDS NEAR 10 KNOTS,
INCREASING TO 10 TO 15 KNOTS. SEAS 1 TO 2 FEET, BUILDING TO 2 TO 3
FEET. NEARSHORE WATERS A LIGHT CHOP, BECOMING A LIGHT TO MODERATE
CHOP. WINDS AND SEAS HIGHER IN AND AROUND WIDESPREAD SHOWERS AND
SCATTERED THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS, INCREASING TO
NEAR 15 KNOTS. SEAS 2 TO 3 FEET. NEARSHORE WATERS A LIGHT TO
MODERATE CHOP, BECOMING A MODERATE CHOP. WINDS AND SEAS HIGHER IN
AND AROUND WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS.
THURSDAY
NORTHEAST TO EAST WINDS NEAR 15 KNOTS, DECREASING TO 10
TO 15 KNOTS. SEAS 2 TO 3 FEET, SUBSIDING TO 1 TO 2 FEET. NEARSHORE
WATERS A MODERATE CHOP, BECOMING A LIGHT TO MODERATE CHOP.
WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS.
THURSDAY NIGHT
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. SEAS
1 TO 2 FEET. NEARSHORE WATERS A LIGHT CHOP. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS.
FRIDAY
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2 FEET.
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO
2 FEET. NEARSHORE WATERS A LIGHT CHOP. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS.
SATURDAY THROUGH SUNDAY
NORTH TO NORTHEAST WINDS NEAR 5 TO 10
KNOTS. SEAS 1 TO 2 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
SUNDAY NIGHT
VARIABLE WINDS NEAR 5 KNOTS. SEAS AROUND 1 FOOT.
NEARSHORE WATERS SMOOTH. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS.
GMZ052>055-072>075-180230-
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-
1017 AM EDT WED SEP 17 2025
THIS AFTERNOON
NORTHEAST TO EAST WINDS NEAR 10 KNOTS,
INCREASING TO 10 TO 15 KNOTS. SEAS 1 TO 2 FEET, BUILDING TO 2 TO 3
FEET. WAVE DETAIL: NORTHEAST TO EAST 3 FEET AT 5 SECONDS. WINDS
AND SEAS HIGHER IN AND AROUND WIDESPREAD SHOWERS AND SCATTERED
THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS NEAR 15 KNOTS, INCREASING TO 15
TO 20 KNOTS. SEAS 2 TO 3 FEET, BUILDING TO 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: NORTHEAST TO EAST 4 FEET AT
5 SECONDS. WINDS AND SEAS HIGHER IN AND AROUND WIDESPREAD SHOWERS
AND SCATTERED THUNDERSTORMS.
THURSDAY
NORTHEAST TO EAST WINDS DECREASING TO 10 TO 15 KNOTS.
SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET, SUBSIDING TO 2 TO 3 FEET.
WAVE DETAIL: EAST 3 FEET AT 6 SECONDS. WIDESPREAD SHOWERS AND
ISOLATED THUNDERSTORMS.
THURSDAY NIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS,
DECREASING TO NEAR 10 KNOTS. SEAS 2 TO 3 FEET, SUBSIDING TO 1 TO 2
FEET. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2
FEET. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2 FEET.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
SATURDAY THROUGH SUNDAY
NORTH TO NORTHEAST WINDS NEAR 10
KNOTS. SEAS 1 TO 2 FEET. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS.
SUNDAY NIGHT
VARIABLE WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
GMZ033-034-180230-
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-
1017 AM EDT WED SEP 17 2025
THIS AFTERNOON
NORTHEAST TO EAST WINDS NEAR 10 KNOTS,
INCREASING TO 10 TO 15 KNOTS. SEAS AROUND 1 FOOT, BUILDING TO 1 TO
2 FEET. WAVE DETAIL: NORTHEAST TO EAST 2 FEET AT 4 SECONDS. WINDS
AND SEAS HIGHER IN AND AROUND NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS.
TONIGHT
EAST WINDS 10 TO 15 KNOTS, INCREASING TO NEAR 15 KNOTS.
SEAS 1 TO 2 FEET, BUILDING TO AROUND 2 FEET. WAVE DETAIL:
NORTHEAST TO EAST 2 FEET AT 4 SECONDS. WINDS AND SEAS HIGHER IN
AND AROUND WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS.
THURSDAY
NORTHEAST TO EAST WINDS DECREASING 10 TO 15 KNOTS.
SEAS SUBSIDING TO 1 TO 2 FEET. WAVE DETAIL: NORTHEAST TO EAST 2
FEET AT 4 SECONDS. WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS.
THURSDAY NIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS
1 TO 2 FEET. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS. SEAS 1 TO
2 FEET. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
FRIDAY NIGHT
NORTHEAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 2 FEET.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
SATURDAY THROUGH SUNDAY
NORTH TO NORTHEAST WINDS NEAR 10
KNOTS. SEAS 1 TO 2 FEET. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS.
SUNDAY NIGHT
VARIABLE WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page