890
FZUS52 KKEY 171426
CWFKEY
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
1026 AM EDT SAT OCT 17 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.
GMZ005-180230-
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS
1026 AM EDT SAT OCT 17 2026
SYNOPSIS
A COLD FRONT WILL PROGRESS SOUTHEASTWARD ACROSS THE CENTRAL AND
EASTERN GULF TODAY. BREEZES ARE ON TRACK TO STAY LIGHT TO GENTLE
NORTHEASTERLIES BEFORE THE FRONT REACHES THE NORTHERNMOST GULF
WATERS TONIGHT. ONCE THE COLD FRONT BEGINS ITS PASSAGE ACROSS THE
KEYS WATERS, BREEZES ARE EXPECTED TO FRESHEN RAPIDLY AMIDST
SQUALLY CONDITIONS. A SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED
FOR PART OF OR ALL THE FLORIDA KEYS WATERS TONIGHT INTO SUNDAY.
FRESH, OCCASIONALLY STRONG, NORTHEASTERLY BREEZES ARE EXPECTED TO
PERSIST THROUGH THE FIRST HALF OF THE WEEK. SHOWER CHANCES WILL
PEAK TONIGHT AND SUNDAY.
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF OCTOBER 14, 2026...
7 NM SOUTH OF DRY TORTUGAS LIGHT, ON LOGGERHEAD KEY
4 NM NORTH OF COSGROVE SHOAL LIGHT, OFF THE MARQUESAS KEYS
3 NM NORTH OF SAND KEY LIGHT, OFF KEY WEST
0 NM NORTH-NORTHWEST OF LOOE KEY, OFF BIG PINE KEY
1 NM SOUTHEAST OF SOMBRERO KEY LIGHT, OFF MARATHON
1 NM SOUTH-SOUTHEAST OF ALLIGATOR REEF LIGHT, OFF ISLAMORADA
2 NM NORTHWEST OF MOLASSES REEF LIGHT, OFF KEY LARGO
2 NM NORTHWEST OF CARYSFORT REEF LIGHT, OFF OCEAN REEF
GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.
GMZ031-180230-
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND
BUTTONWOOD SOUND-
1026 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY MAY BE REQUIRED TONIGHT
THIS AFTERNOON
EAST WINDS 5 TO 10 KNOTS, BECOMING NORTHWEST TO
NORTH NEAR 10 KNOTS. BAY WATERS SMOOTH TO A LIGHT CHOP, BECOMING
A LIGHT CHOP. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS.
TONIGHT
NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS, INCREASING TO 15
TO 20 KNOTS. BAY WATERS A LIGHT TO MODERATE CHOP, BECOMING CHOPPY
AFTER MIDNIGHT. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS.
SUNDAY
NORTHEAST WINDS 15 TO 20 KNOTS, INCREASING TO 20 TO 25
KNOTS. BAY WATERS CHOPPY, BECOMING VERY ROUGH. SHOWERS WITH A
CHANCE OF THUNDERSTORMS.
SUNDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS, DECREASING TO NEAR
20 KNOTS. BAY WATERS VERY ROUGH, BECOMING ROUGH. A CHANCE OF
SHOWERS AND THUNDERSTORMS.
MONDAY
NORTHEAST WINDS 20 TO 25 KNOTS. BAY WATERS VERY ROUGH.
A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS NEAR 20 KNOTS, BECOMING NORTH TO
NORTHEAST 15 TO 20 KNOTS. BAY WATERS VERY ROUGH, BECOMING CHOPPY.
A SLIGHT CHANCE OF SHOWERS.
TUESDAY
NORTHEAST 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.
TUESDAY NIGHT
NORTHEAST WINDS NEAR 20 KNOTS, BECOMING NORTH TO
NORTHEAST 15 TO 20 KNOTS. BAY WATERS ROUGH, BECOMING CHOPPY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WEDNESDAY
NORTHEAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. A
CHANCE OF SHOWERS.
WEDNESDAY NIGHT
NORTH TO 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.
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-
1026 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT
THIS AFTERNOON
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS,
BECOMING NORTHWEST TO NORTH 10 TO 15 KNOTS. SEAS 1 FOOT OR LESS,
BUILDING TO AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT
CHOP, BECOMING A LIGHT TO MODERATE CHOP. SHOWERS LIKELY WITH A
CHANCE OF THUNDERSTORMS.
TONIGHT
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS, INCREASING TO
20 TO 25 KNOTS. SEAS 1 FOOT, BUILDING TO 2 TO 4 FEET, OCCASIONALLY
TO 5 FEET, EXCEPT 1 TO 2 FEET, BUILDING TO 4 TO 6 FEET,
OCCASIONALLY TO 8 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE
WATERS A MODERATE CHOP, BECOMING VERY ROUGH. SHOWERS WITH A CHANCE
OF THUNDERSTORMS.
SUNDAY
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET, EXCEPT 4 TO 6 FEET, OCCASIONALLY TO
8 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS VERY ROUGH.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS.
SUNDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET, EXCEPT 6 TO 7 FEET, OCCASIONALLY TO
9 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS VERY ROUGH. A
SLIGHT CHANCE OF SHOWERS.
MONDAY
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET, EXCEPT 6 TO 7 FEET, OCCASIONALLY TO
9 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS VERY ROUGH. A
SLIGHT CHANCE OF SHOWERS.
MONDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET, EXCEPT 5 TO 6 FEET, OCCASIONALLY TO 8
FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS VERY ROUGH. A
SLIGHT CHANCE OF SHOWERS.
TUESDAY
NORTHEAST WINDS NEAR 20 KNOTS, BECOMING 15 TO 20 KNOTS.
SEAS 3 TO 5 FEET, OCCASIONALLY TO 6 FEET, SUBSIDING TO 2 TO 4
FEET, OCCASIONALLY TO 5 FEET. NEARSHORE WATERS ROUGH, BECOMING
CHOPPY. A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 2 TO
4 FEET, OCCASIONALLY TO 5 FEET, SUBSIDING TO 2 TO 3 FEET.
NEARSHORE WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS, BECOMING
10 TO 15 KNOTS. SEAS 2 TO 3 FEET. NEARSHORE WATERS CHOPPY,
BECOMING LIGHT TO MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT
NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS. SEAS
2 TO 3 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A SLIGHT
CHANCE OF SHOWERS.
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-
1026 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT
THIS AFTERNOON
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, BECOMING
NORTH NEAR 10 KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS SMOOTH
TO A LIGHT CHOP, BECOMING A LIGHT CHOP. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS, BECOMING
NORTHEAST 20 TO 25 KNOTS. SEAS 1 FOOT, BUILDING TO 2 TO 3 FEET,
EXCEPT 1 TO 2 FEET, BUILDING TO 3 TO 5 FEET, OCCASIONALLY TO 6
FEET WEST OF COSGROVE SHOAL LIGHT. NEARSHORE WATERS A LIGHT TO
MODERATE CHOP, BECOMING VERY ROUGH. SHOWERS WITH A CHANCE OF
THUNDERSTORMS.
SUNDAY
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET, EXCEPT 4 TO 6 FEET, OCCASIONALLY TO
8 FEET WEST OF COSGROVE SHOAL LIGHT. NEARSHORE WATERS VERY ROUGH.
SHOWERS WITH A CHANCE OF THUNDERSTORMS.
SUNDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET, EXCEPT 5 TO 7 FEET, OCCASIONALLY TO
9 FEET WEST OF COSGROVE SHOAL LIGHT. NEARSHORE WATERS VERY ROUGH.
A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
MONDAY
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET, EXCEPT 5 TO 7 FEET, OCCASIONALLY TO
9 FEET WEST OF COSGROVE SHOAL LIGHT. NEARSHORE WATERS VERY ROUGH.
A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. NEARSHORE WATERS VERY ROUGH. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS 20 TO 25 KNOTS, BECOMING 15 TO
20 KNOTS. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET, EXCEPT 4 TO 5
FEET, OCCASIONALLY TO 6 FEET WEST OF COSGROVE SHOAL LIGHT.
NEARSHORE WATERS VERY ROUGH, BECOMING CHOPPY. A SLIGHT CHANCE OF
SHOWERS.
TUESDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4
FEET, OCCASIONALLY TO 5 FEET. NEARSHORE WATERS CHOPPY. A SLIGHT
CHANCE OF SHOWERS.
WEDNESDAY
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS, BECOMING
10 TO 15 KNOTS. SEAS 2 TO 4 FEET, OCCASIONALLY TO 5 FEET.
NEARSHORE WATERS CHOPPY, BECOMING A LIGHT TO MODERATE CHOP. A
SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT
NORTH TO NORTHEAST WINDS 10 TO 15 KNOTS. SEAS
2 TO 3 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. A SLIGHT
CHANCE OF SHOWERS.
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-
1026 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY MAY BE REQUIRED TONIGHT
THIS AFTERNOON
EAST WINDS 5 TO 10 KNOTS, BECOMING NORTH TO
NORTHEAST NEAR 10 KNOTS. SEAS 1 TO 2 FEET. WAVE DETAIL: EAST 1
FOOT AT 4 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS.
TONIGHT
NORTHEAST WINDS 10 TO 15 KNOTS, INCREASING TO 15 TO 20
KNOTS. SEAS AROUND 2 FEET, BUILDING TO 3 TO 5 FEET, OCCASIONALLY
TO 6 FEET. WAVE DETAIL: NORTHEAST 2 FEET AT 3 SECONDS, BECOMING
NORTHEAST 3 FEET AT 4 SECONDS. SHOWERS WITH A CHANCE OF
THUNDERSTORMS.
SUNDAY
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 5 TO 7 FEET,
OCCASIONALLY TO 9 FEET, EXCEPT BUILDING TO 7 TO 9 FEET,
OCCASIONALLY TO 11 FEET EASTERN STRAITS. SHOWERS WITH A CHANCE OF
THUNDERSTORMS.
SUNDAY NIGHT
NORTHEAST TO EAST WINDS 20 TO 25 KNOTS. SEAS 6 TO
9 FEET, OCCASIONALLY TO 11 FEET, EXCEPT 8 TO 10 FEET, OCCASIONALLY
TO 13 FEET EASTERN STRAITS. SHOWERS LIKELY WITH A CHANCE OF
THUNDERSTORMS.
MONDAY
NORTHEAST TO EAST WINDS 20 TO 25 KNOTS. SEAS 6 TO
9 FEET, OCCASIONALLY TO 11 FEET. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS.
MONDAY NIGHT
NORTHEAST WINDS NEAR 20 KNOTS. SEAS 6 TO 8 FEET,
OCCASIONALLY TO 10 FEET. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS.
TUESDAY
NORTHEAST WINDS 20 TO 25 KNOTS, DECREASING TO NEAR 20
KNOTS. SEAS 6 TO 8 FEET, OCCASIONALLY TO 10 FEET. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TUESDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO
6 FEET, OCCASIONALLY TO 8 FEET. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS.
WEDNESDAY
NORTHEAST WINDS 15 TO 20 KNOTS, DECREASING TO NEAR 15
KNOTS. SEAS 4 TO 6 FEET, OCCASIONALLY TO 8 FEET, SUBSIDING TO 3 TO
5 FEET, OCCASIONALLY TO 6 FEET. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS.
WEDNESDAY NIGHT
NORTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO
5 FEET, OCCASIONALLY TO 6 FEET. A CHANCE OF SHOWERS.
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-
1026 AM EDT SAT OCT 17 2026
..SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS
..SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED TONIGHT
THIS AFTERNOON
NORTHEAST WINDS 5 TO 10 KNOTS, INCREASING TO 15
TO 20 KNOTS. SEAS AROUND 1 FOOT, BUILDING TO 1 TO 2 FEET. SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS.
TONIGHT
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS, INCREASING TO
NORTHEAST 20 TO 25 KNOTS. SEAS 2 TO 3 FEET, BUILDING TO 5 TO 7
FEET, OCCASIONALLY TO 9 FEET. WAVE DETAIL: NORTH 3 FEET AT 5
SECONDS, BECOMING NORTH 6 FEET AT 7 SECONDS. SHOWERS WITH A CHANCE
OF THUNDERSTORMS.
SUNDAY
NORTHEAST WINDS 20 TO 25 KNOTS, INCREASING TO 25 TO 30
KNOTS. SEAS 5 TO 8 FEET, OCCASIONALLY TO 10 FEET. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
SUNDAY NIGHT
NORTHEAST WINDS 25 TO 30 KNOTS, DECREASING TO 20
TO 25 KNOTS. SEAS 6 TO 8 FEET, OCCASIONALLY TO 10 FEET. A SLIGHT
CHANCE OF SHOWERS.
MONDAY
NORTHEAST WINDS NEAR 25 KNOTS, DECREASING TO 20 TO 25
KNOTS. SEAS 5 TO 8 FEET, OCCASIONALLY TO 10 FEET, SUBSIDING TO 5
TO 6, OCCASIONALLY TO 8 FEET. A SLIGHT CHANCE OF SHOWERS.
MONDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 5 TO 6 FEET,
OCCASIONALLY TO 8 FEET. A SLIGHT CHANCE OF SHOWERS.
TUESDAY
NORTHEAST WINDS 20 TO 25 KNOTS, DECREASING TO 15 TO 20
KNOTS. SEAS 4 TO 6 FEET, OCCASIONALLY TO 8 FEET, SUBSIDING TO 3 TO
4 FEET, OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE OF SHOWERS.
TUESDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 3 TO
4 FEET, OCCASIONALLY TO 5 FEET. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY
NORTHEAST WINDS 15 TO 20 KNOTS, DECREASING TO 10 TO
15 KNOTS. SEAS 3 TO 4 FEET, OCCASIONALLY TO 5 FEET, SUBSIDING TO 2
TO 3 FEET. A SLIGHT CHANCE OF SHOWERS.
WEDNESDAY NIGHT
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 2
TO 3 FEET. A SLIGHT CHANCE OF SHOWERS.
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