070  
FZUS52 KKEY 260234  
CWFKEY  
 
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS  
NATIONAL WEATHER SERVICE KEY WEST FL  
1034 PM EDT MON OCT 25 2021  
 
FLORIDA BAY, HAWK CHANNEL AND STRAITS OF FLORIDA FROM OCEAN REEF TO  
SOUTH OF DRY TORTUGAS, AND THE EXTREME SOUTHEASTERN GULF OF  
MEXICO, 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.  
 
GMZ005-260845-  
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS  
1034 PM EDT MON OCT 25 2021  
   
SYNOPSIS
 
A LOW PRESSURE SYSTEM DEVELOPING EAST OF THE CAROLINAS  
WILL SUPPORT DRIER, NORTHWEST BREEZES ACROSS THE FLORIDA KEYS  
TUESDAY THROUGH WEDNESDAY. A FRONTAL BOUNDARY WILL APPROACH  
FLORIDA AS EARLY AS WEDNESDAY NIGHT RESULTING IN FRESHENING  
SOUTHWESTERLY BREEZES, AND SMALL CRAFT ADVISORIES MAY BE REQUIRED  
FOR PORTIONS OF THE KEYS AS EARLY AS THURSDAY. FRESH BREEZES WILL  
PERSIST THROUGH FRIDAY NIGHT AND SATURDAY, WITH BREEZES POSSIBLY  
DIMINISHING BY SATURDAY NIGHT OR SUNDAY.  
 
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF  
OCTOBER 25...  
 
31 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.  
15 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.  
14 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.  
20 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.  
24 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON.  
28 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.  
22 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.  
11 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.  
 
GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.  
 

 
 
GMZ031-260845-  
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND  
BUTTONWOOD SOUND-  
1034 PM EDT MON OCT 25 2021  
   
OVERNIGHT
 
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS, BECOMING  
WEST. BAY WATERS A LIGHT CHOP. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.   
TUESDAY
 
WEST WINDS INCREASING TO 10 TO 15 KNOTS. BAY WATERS  
BECOMING A LIGHT TO MODERATE CHOP. ISOLATED SHOWERS.    
TUESDAY NIGHT
 
WEST TO NORTHWEST WINDS DECREASING TO NEAR 10  
KNOTS. BAY WATERS BECOMING A LIGHT CHOP. ISOLATED SHOWERS.   
WEDNESDAY
 
NORTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST TO  
WEST IN THE AFTERNOON. BAY WATERS SMOOTH TO A LIGHT CHOP.  
ISOLATED SHOWERS.   
WEDNESDAY NIGHT
 
WEST WINDS NEAR 5 KNOTS, BECOMING SOUTH TO  
SOUTHWEST AND INCREASING TO NEAR 10 KNOTS LATE. BAY WATERS  
SMOOTH, BECOMING A LIGHT CHOP. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.   
THURSDAY
 
SOUTH TO SOUTHWEST WINDS INCREASING TO 15 TO 20 KNOTS.  
BAY WATERS BECOMING CHOPPY. NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS.   
THURSDAY NIGHT
 
SOUTHWEST TO WEST WINDS 15 TO 20 KNOTS. BAY  
WATERS CHOPPY. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.    
FRIDAY
 
WEST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. ISOLATED  
SHOWERS AND THUNDERSTORMS.    
FRIDAY NIGHT AND SATURDAY
 
WEST TO NORTHWEST WINDS 15 TO 20  
KNOTS. BAY WATERS CHOPPY. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
NORTHWEST WINDS DECREASING TO 10 TO 15 KNOTS.  
BAY WATERS BECOMING A LIGHT TO MODERATE CHOP. ISOLATED SHOWERS.  
 

 
 
GMZ032-035-260845-  
BAYSIDE AND GULF SIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE  
BRIDGE-  
GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON  
SHOAL OUT TO 5 FATHOMS-  
1034 PM EDT MON OCT 25 2021  
   
OVERNIGHT
 
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS, BECOMING  
WEST. SEAS AROUND 1 FOOT. NEARSHORE WATERS A LIGHT CHOP. SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY
 
WEST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.  
NEARSHORE WATERS A LIGHT CHOP. ISOLATED SHOWERS.    
TUESDAY NIGHT
 
NORTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND  
1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. ISOLATED  
SHOWERS.    
WEDNESDAY
 
NORTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST TO  
WEST IN THE AFTERNOON. SEAS 1 FOOT OR LESS. NEARSHORE WATERS  
SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS.    
WEDNESDAY NIGHT
 
SOUTHWEST TO WEST WINDS 5 TO 10 KNOTS,  
BECOMING SOUTH TO SOUTHWEST AND INCREASING TO 10 TO 15 KNOTS.  
SEAS BUILDING TO 1 TO 2 FEET. NEARSHORE WATERS SMOOTH TO A LIGHT  
CHOP, BECOMING A LIGHT TO MODERATE CHOP. SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS.   
THURSDAY
 
SOUTH TO SOUTHWEST WINDS INCREASING TO 15 TO 20  
KNOTS. SEAS BUILDING TO 1 TO 3 FEET, EXCEPT BUILDING TO 3 TO 4  
FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS BECOMING CHOPPY.  
NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.    
THURSDAY NIGHT
 
SOUTHWEST TO WEST WINDS 15 TO 20 KNOTS. SEAS 2  
TO 5 FEET, EXCEPT 4 TO 6 FEET WEST OF THE MARQUESAS KEYS.  
NEARSHORE WATERS CHOPPY. NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS.   
FRIDAY
 
WEST WINDS NEAR 20 KNOTS. SEAS 3 TO 6 FEET, EXCEPT 5 TO  
7 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS ROUGH.  
ISOLATED SHOWERS AND THUNDERSTORMS.    
FRIDAY NIGHT
 
WEST TO NORTHWEST WINDS NEAR 20 KNOTS. SEAS 3 TO  
6 FEET, EXCEPT 6 TO 7 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE  
WATERS ROUGH. ISOLATED SHOWERS.    
SATURDAY
 
WEST TO NORTHWEST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5  
FEET, EXCEPT 5 TO 7 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE  
WATERS CHOPPY. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
NORTHWEST WINDS DECREASING TO 10 TO 15 KNOTS.  
SEAS SUBSIDING TO 1 TO 3 FEET, EXCEPT SUBSIDING TO 3 TO 5 FEET  
WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS BECOMING A LIGHT TO  
MODERATE CHOP. ISOLATED SHOWERS.  
 

 
 
GMZ042>044-260845-  
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-  
1034 PM EDT MON OCT 25 2021  
   
OVERNIGHT
 
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS 1 TO 2  
FEET, SUBSIDING TO AROUND 1 FOOT. NEARSHORE WATERS A LIGHT CHOP.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.   
TUESDAY
 
WEST WINDS INCREASING TO 10 TO 15 KNOTS. SEAS 1 TO 2  
FEET. NEARSHORE WATERS BECOMING A LIGHT TO MODERATE CHOP.  
ISOLATED SHOWERS.   
TUESDAY NIGHT
 
WEST TO NORTHWEST WINDS DECREASING TO NEAR 10  
KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS BECOMING A LIGHT  
CHOP. ISOLATED SHOWERS.   
WEDNESDAY
 
NORTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST TO  
WEST IN THE AFTERNOON. SEAS 1 FOOT OR LESS. NEARSHORE WATERS  
SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS.    
WEDNESDAY NIGHT
 
SOUTHWEST TO WEST WINDS 5 TO 10 KNOTS,  
BECOMING SOUTH TO SOUTHWEST AND INCREASING TO 10 TO 15 KNOTS.  
SEAS AROUND 1 FOOT, BUILDING TO 1 TO 3 FEET. NEARSHORE WATERS  
SMOOTH TO A LIGHT CHOP, BECOMING A LIGHT TO MODERATE CHOP.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
THURSDAY
 
SOUTH TO SOUTHWEST WINDS INCREASING TO 15 TO 20  
KNOTS. SEAS BUILDING TO 3 TO 4 FEET. NEARSHORE WATERS BECOMING  
CHOPPY. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.    
THURSDAY NIGHT
 
SOUTHWEST TO WEST WINDS 15 TO 20 KNOTS. SEAS 3  
TO 4 FEET. NEARSHORE WATERS CHOPPY. NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS.    
FRIDAY
 
WEST WINDS NEAR 20 KNOTS. SEAS 2 TO 5 FEET. WEST OF  
COSGROVE SHOAL LIGHT, SEAS BUILDING TO 5 TO 6 FEET. NEARSHORE  
WATERS ROUGH. ISOLATED SHOWERS AND THUNDERSTORMS.    
FRIDAY NIGHT
 
WEST TO NORTHWEST WINDS NEAR 20 KNOTS. SEAS 2 TO  
4 FEET, EXCEPT 5 TO 7 FEET WEST OF COSGROVE SHOAL LIGHT.  
NEARSHORE WATERS ROUGH. ISOLATED SHOWERS.    
SATURDAY
 
WEST TO NORTHWEST WINDS 15 TO 20 KNOTS. SEAS 2 TO  
4 FEET, EXCEPT 4 TO 6 FEET WEST OF COSGROVE SHOAL LIGHT.  
NEARSHORE WATERS CHOPPY. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
NORTHWEST WINDS DECREASING TO 10 TO 15 KNOTS.  
SEAS SUBSIDING TO 1 TO 3 FEET, EXCEPT SUBSIDING TO 3 TO 4 FEET  
WEST OF COSGROVE SHOAL LIGHT. NEARSHORE WATERS BECOMING A LIGHT TO  
MODERATE CHOP. ISOLATED SHOWERS.  
 

 
 
GMZ052>055-072>075-260845-  
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-  
1034 PM EDT MON OCT 25 2021  
   
OVERNIGHT
 
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS AROUND 1  
FOOT. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY
 
WEST WINDS INCREASING TO 10 TO 15 KNOTS. SEAS 1 TO 2  
FEET, BUILDING TO 2 TO 3 FEET. ISOLATED SHOWERS.    
TUESDAY NIGHT
 
WEST TO NORTHWEST WINDS DECREASING TO NEAR 10  
KNOTS. SEAS SUBSIDING TO 1 TO 2 FEET. ISOLATED SHOWERS.    
WEDNESDAY
 
WEST TO NORTHWEST WINDS 5 TO 10 KNOTS, BECOMING WEST  
IN THE AFTERNOON. SEAS AROUND 1 FOOT. ISOLATED SHOWERS.    
WEDNESDAY NIGHT
 
WEST TO NORTHWEST WINDS 5 TO 10 KNOTS,  
BECOMING SOUTH AND INCREASING TO 10 TO 15 KNOTS. SEAS 1 TO 2  
FEET, BUILDING TO 2 TO 3 FEET. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.   
THURSDAY
 
SOUTH TO SOUTHWEST WINDS INCREASING TO 15 TO 20  
KNOTS. SEAS 2 TO 4 FEET, BUILDING TO 4 TO 5 FEET. NUMEROUS  
SHOWERS AND ISOLATED THUNDERSTORMS.   
THURSDAY NIGHT
 
SOUTHWEST TO WEST WINDS 15 TO 20 KNOTS. SEAS  
4 TO 6 FEET. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.   
FRIDAY
 
WEST WINDS NEAR 20 KNOTS. SEAS 5 TO 8 FEET. SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS.    
FRIDAY NIGHT
 
WEST TO NORTHWEST WINDS NEAR 20 KNOTS. SEAS 5 TO  
8 FEET. ISOLATED SHOWERS.    
SATURDAY
 
WEST TO NORTHWEST WINDS 15 TO 20 KNOTS. SEAS 4 TO  
7 FEET. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
WEST TO NORTHWEST WINDS DECREASING TO 10 TO 15  
KNOTS. SEAS SUBSIDING TO 3 TO 5 FEET. ISOLATED SHOWERS.  
 

 
 
GMZ033-034-260845-  
GULF WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE 20 TO 60 NM OUT  
AND BEYOND 5 FATHOMS-  
GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL-  
1034 PM EDT MON OCT 25 2021  
   
OVERNIGHT
 
WEST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY
 
WEST TO NORTHWEST WINDS NEAR 10 KNOTS. SEAS AROUND 2  
FEET. ISOLATED SHOWERS.    
TUESDAY NIGHT
 
NORTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET.  
ISOLATED SHOWERS.    
WEDNESDAY
 
WEST TO NORTHWEST WINDS NEAR 5 KNOTS, BECOMING  
SOUTHWEST TO WEST IN THE AFTERNOON. SEAS AROUND 1 FOOT. ISOLATED  
SHOWERS.    
WEDNESDAY NIGHT
 
SOUTHWEST TO WEST WINDS 5 TO 10 KNOTS,  
BECOMING SOUTH AND INCREASING TO 10 TO 15 KNOTS. SEAS BUILDING TO  
1 TO 3 FEET. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
THURSDAY
 
SOUTH TO SOUTHWEST WINDS INCREASING TO 15 TO 20  
KNOTS. SEAS 2 TO 4 FEET, BUILDING TO 4 TO 6 FEET. WIDESPREAD  
SHOWERS AND ISOLATED THUNDERSTORMS.    
THURSDAY NIGHT
 
SOUTHWEST TO WEST WINDS NEAR 20 KNOTS. SEAS  
BUILDING TO 5 TO 8 FEET. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.    
FRIDAY
 
WEST WINDS NEAR 20 KNOTS. SEAS 5 TO 9 FEET. ISOLATED  
SHOWERS AND THUNDERSTORMS.    
FRIDAY NIGHT
 
WEST TO NORTHWEST WINDS NEAR 20 KNOTS. SEAS 6 TO  
9 FEET. ISOLATED SHOWERS.    
SATURDAY
 
WEST TO NORTHWEST WINDS 15 TO 20 KNOTS. SEAS SUBSIDING  
TO 4 TO 7 FEET. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
NORTHWEST WINDS DECREASING TO 10 TO 15 KNOTS.  
SEAS 4 TO 6 FEET. ISOLATED SHOWERS.  
 

 
 
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