764
FZUS52 KKEY 111427
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
1027 AM EDT SUN OCT 11 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.
THE WAVE DETAIL SECTION HIGHLIGHTS THE PERIOD AND DIRECTION OF
ORIGIN FOR THE HIGHEST-ENERGY WAVES, AS WELL AS ANY LONG-PERIOD
SWELLS MOVING IN A DIFFERENT DIRECTION THAN THE WIND.
GMZ005-120230-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
1027 AM EDT SUN OCT 11 2026
SYNOPSIS
WEAK HIGH PRESSURE ALONG THE NORTH GULF COAST COMBINED WITH THE
ATLANTIC RIDGE WILL CONTINUE TO PROMOTE PEAKING AND LULLING
BREEZES THROUGH AT LEAST MONDAY. IN ADDITION, BREEZES WILL BACK TO
THE NORTHEAST AS THE HIGH ALONG THE NORTH GULF COAST STRENGTHENS.
AS THE HIGH BUILDS, A FRONT ASSOCIATED WITH POST-TROPICAL CYCLONE
ISAIAS WILL PUSH THROUGH THE KEYS SOMETIME MONDAY NIGHT OR
TUESDAY. IN THE WAKE OF THE FRONT, HIGH PRESSURE WILL REMAIN
ACROSS THE SOUTHEAST U.S. PROMOTING GENTLE TO MODERATE NORTHEAST
TO EAST BREEZES THROUGH MUCH OF THE WEEK. DRIER AIR MOVING INTO
THE KEYS THIS AFTERNOON WILL ALSO LEAD TO DECREASED RAIN CHANCES
THROUGH AT LEAST MID WEEK.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF OCTOBER
9, 2026...
53 NM SOUTH-SOUTHEAST OF DRY TORTUGAS LIGHT, ON LOGGERHEAD KEY
33 NM SOUTH-SOUTHEAST OF COSGROVE SHOAL LIGHT, OFF THE MARQUESAS KEYS
24 NM SOUTH-SOUTHEAST OF SAND KEY LIGHT, OFF KEY WEST
19 NM SOUTH-SOUTHEAST OF LOOE KEY, OFF BIG PINE KEY
13 NM SOUTH-SOUTHEAST OF SOMBRERO KEY LIGHT, OFF MARATHON
5 NM SOUTH-SOUTHEAST OF ALLIGATOR REEF LIGHT, OFF ISLAMORADA
2 NM EAST OF MOLASSES REEF LIGHT, OFF KEY LARGO
2 NM EAST OF CARYSFORT REEF LIGHT, OFF OCEAN REEF
GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC
OFFICE.
GMZ031-120230-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
1027 AM EDT SUN OCT 11 2026
THIS AFTERNOON
SOUTHEAST WINDS NEAR 10 KNOTS, BECOMING EAST TO
SOUTHEAST AND DECREASING TO 5 TO 10 KNOTS. BAY WATERS A LIGHT
CHOP, BECOMING SMOOTH TO A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. BAY WATERS A
LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
MONDAY
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, INCREASING TO
NEAR 10 KNOTS IN THE AFTERNOON. BAY WATERS SMOOTH TO A LIGHT
CHOP, BECOMING A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS A
LIGHT TO MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS A LIGHT TO
MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
NORTHEAST WINDS NEAR 15 KNOTS, DECREASING TO 10
TO 15 KNOTS. BAY WATERS A MODERATE CHOP, BECOMING A LIGHT TO
MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. BAY WATERS A
LIGHT TO MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
WEDNESDAY NIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. BAY
WATERS A LIGHT TO MODERATE CHOP. A CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS. BAY WATERS A LIGHT TO
MODERATE CHOP. A CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. BAY WATERS A LIGHT
TO MODERATE CHOP. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
GMZ032-035-120230-
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-
1027 AM EDT SUN OCT 11 2026
THIS AFTERNOON
SOUTHEAST WINDS NEAR 10 KNOTS, BECOMING EAST TO
SOUTHEAST AND DECREASING TO 5 TO 10 KNOTS. SEAS 1 TO 2 FEET,
EXCEPT 2 TO 3 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS A
LIGHT CHOP, BECOMING SMOOTH TO A LIGHT CHOP. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS NEAR 10 KNOTS, INCREASING TO 10
TO 15 KNOTS. SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET WEST OF THE
MARQUESAS KEYS. NEARSHORE WATERS A LIGHT CHOP, BECOMING A LIGHT TO
MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
MONDAY
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS, BECOMING
NORTHEAST AND DECREASING TO 5 TO 10 KNOTS. SEAS 1 TO 2 FEET,
EXCEPT AROUND 2 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS
A LIGHT TO MODERATE CHOP, BECOMING SMOOTH TO A LIGHT CHOP. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS NEAR 10 KNOTS, INCREASING TO NEAR
15 KNOTS AFTER MIDNIGHT. SEAS 1 TO 2 FEET, EXCEPT BUILDING TO
AROUND 3 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS A LIGHT
CHOP, BECOMING A MODERATE CHOP. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS NEAR 15 KNOTS, DECREASING TO 10 TO 15
KNOTS. SEAS 1 TO 2 FEET, EXCEPT AROUND 3 FEET WEST OF THE
MARQUESAS KEYS. NEARSHORE WATERS A MODERATE CHOP, BECOMING A LIGHT
TO MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
NORTHEAST WINDS 10 TO 15 KNOTS, INCREASING TO
NEAR 15 KNOTS. SEAS 1 TO 2 FEET, EXCEPT 2 TO 3 FEET WEST OF THE
MARQUESAS KEYS. NEARSHORE WATERS A LIGHT TO MODERATE CHOP,
BECOMING A MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
NORTHEAST TO 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.
WEDNESDAY NIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS
1 TO 2 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A CHANCE
OF SHOWERS AND THUNDERSTORMS.
THURSDAY
EAST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.
NEARSHORE WATERS A LIGHT CHOP. A CHANCE OF SHOWERS AND
THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 2 FEET.
NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A SLIGHT CHANCE OF
THUNDERSTORMS. A CHANCE OF SHOWERS.
GMZ042>044-120230-
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-
1027 AM EDT SUN OCT 11 2026
THIS AFTERNOON
SOUTHEAST WINDS 10 TO 15 KNOTS, BECOMING EAST
AND DECREASING TO NEAR 10 KNOTS IN THE AFTERNOON. SEAS 2 TO 3
FEET, SUBSIDING TO AROUND 2 FEET. NEARSHORE WATERS A LIGHT TO MODERATE
CHOP, BECOMING A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 2
FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
MONDAY
NORTHEAST WINDS 10 TO 15 KNOTS, DECREASING TO 5 TO 10
KNOTS IN THE AFTERNOON. SEAS AROUND 2 FEET, SUBSIDING TO 1 TO 2
FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP, BECOMING SMOOTH
TO A LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS NEAR 10 KNOTS, INCREASING TO NEAR 15
KNOTS. SEAS 1 TO 2 FEET, BUILDING TO 2 TO 3 FEET. NEARSHORE
WATERS A LIGHT CHOP, BECOMING A MODERATE CHOP. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 2 TO 3 FEET.
NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A SLIGHT CHANCE OF
SHOWERS.
TUESDAY NIGHT
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 2 TO 3 FEET.
NEARSHORE WATERS A MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
NORTHEAST TO EAST WINDS NEAR 15 KNOTS. SEAS 2 TO
3 FEET. NEARSHORE WATERS A MODERATE CHOP. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET.
NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A CHANCE OF SHOWERS
AND THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET.
NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A CHANCE OF SHOWERS
AND THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET.
NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF THUNDERSTORMS.
GMZ052>055-072>075-120230-
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-
1027 AM EDT SUN OCT 11 2026
THIS AFTERNOON
SOUTHEAST WINDS 10 TO 15 KNOTS, BECOMING EAST
AND DECREASING TO NEAR 10 KNOTS. SEAS 2 TO 4 FEET, OCCASIONALLY TO
5 FEET, SUBSIDING TO 2 TO 3 FEET. WAVE DETAIL: EAST TO SOUTHEAST
4 FEET AT 5 SECONDS AND WEST 2 FEET AT 9 SECONDS. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
4 FEET, OCCASIONALLY TO 5 FEET. WAVE DETAIL: NORTHEAST TO EAST 3
FEET AT 5 SECONDS AND WEST 1 FOOT AT 7 SECONDS. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
MONDAY
NORTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: NORTHEAST TO EAST 3 FEET AT
5 SECONDS AND WEST TO NORTHWEST 1 FOOT AT 6 SECONDS. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
TUESDAY NIGHT
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
WEDNESDAY
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO
4 FEET, OCCASIONALLY TO 5 FEET. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS.
WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
GMZ033-034-120230-
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-
1027 AM EDT SUN OCT 11 2026
THIS AFTERNOON
SOUTHEAST WINDS NEAR 10 KNOTS, BECOMING EAST
AND DECREASING TO 5 TO 10 KNOTS IN THE AFTERNOON. SEAS 2 TO 3
FEET, SUBSIDING TO AROUND 2 FEET. WAVE DETAIL: SOUTHEAST 2 FEET AT
4 SECONDS AND WEST TO NORTHWEST 2 FEET AT 7 SECONDS. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, INCREASING TO
NEAR 10 KNOTS. SEAS 1 TO 2 FEET. WAVE DETAIL: EAST 2 FEET AT 3
SECONDS AND WEST TO NORTHWEST 2 FEET AT 6 SECONDS. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS.
MONDAY
NORTHEAST WINDS 10 TO 15 KNOTS, BECOMING NORTH TO
NORTHEAST. SEAS AROUND FEET, BUILDING TO 2 TO 3 FEET. WAVE
DETAIL: NORTHEAST TO EAST 2 FEET AT 3 SECONDS AND NORTHWEST 2 FEET
AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
MONDAY NIGHT
NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS, BECOMING
NORTHEAST AND INCREASING TO NEAR 15 KNOTS. SEAS 2 TO 3 FEET,
BUILDING TO AROUND 3 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS 15 TO 20 KNOTS, BECOMING NORTH TO
NORTHEAST AND DECREASING TO 10 TO 15 KNOTS IN THE AFTERNOON. SEAS
2 TO 4 FEET, OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS, BECOMING
NORTHEAST TO EAST AND INCREASING TO NEAR 15 KNOTS. SEAS 2 TO 3
FEET. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
NORTHEAST TO EAST WINDS NEAR 15 KNOTS, DECREASING TO 10
TO 15 KNOTS. SEAS 2 TO 3 FEET.
WEDNESDAY NIGHT
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS. SEAS
AROUND 2 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
THURSDAY
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET. A
CHANCE OF SHOWERS AND THUNDERSTORMS.
THURSDAY NIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET.
A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
AJP
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