200  
FZUS52 KKEY 040831  
CWFKEY  
 
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS  
NATIONAL WEATHER SERVICE KEY WEST FL  
431 AM EDT FRI JUL 4 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.  
 
GMZ005-042045-  
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS  
431 AM EDT FRI JUL 4 2025  
   
SYNOPSIS  
TROUGHING WILL GRADUALLY DEEPEN INTO FLORIDA TODAY AND  
TOMORROW WITH THE FLORIDA KEYS LOCAL WATERS ON THE PERIPHERY OF  
THIS PATTERN. THIS WILL LEAD TO SUSTAINED GENTLE TO MODESTLY  
MODERATE SOUTHWESTERLY BREEZES, AND AN INCREASE IN SHOWERS AND  
THUNDERSTORMS. AS THE TROUGH EXITS THE REGION AND LIFTS NORTHEAST  
STARTING SUNDAY, A WEAK RIDGE AXIS WILL LIE ACROSS THE FLORIDA  
KEYS, RESULTING IN GENERALLY LIGHT TO GENTLE EASTERLY BREEZES.  
 
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF JUNE 29...  
 
14 NM SOUTHWEST OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.  
15 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.  
18 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.  
26 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.  
31 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON.  
18 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.  
9 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.  
3 NM EAST 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.  
 
 
 
GMZ031-042045-  
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND  
BUTTONWOOD SOUND-  
431 AM EDT FRI JUL 4 2025  
   
TODAY  
SOUTHWEST WINDS NEAR 5 KNOTS, INCREASING TO 5 TO 10 KNOTS.  
BAY WATERS SMOOTH, BECOMING SMOOTH TO A LIGHT CHOP. SCATTERED  
SHOWERS AND THUNDERSTORMS.    
TONIGHT  
SOUTHWEST WINDS 5 TO 10 KNOTS, INCREASING TO NEAR 10  
KNOTS. BAY WATERS SMOOTH TO A LIGHT CHOP, BECOMING A LIGHT CHOP.  
SCATTERED SHOWERS AND THUNDERSTORMS.    
SATURDAY  
SOUTHWEST WINDS NEAR 10 KNOTS. BAY WATERS A LIGHT  
CHOP. SCATTERED SHOWERS AND THUNDERSTORMS.    
SATURDAY NIGHT  
SOUTHWEST WINDS NEAR 10 KNOTS. BAY WATERS A  
LIGHT CHOP. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.   
SUNDAY  
SOUTH TO SOUTHWEST WINDS NEAR 10 KNOTS, DECREASING TO 5  
TO 10 KNOTS. BAY WATERS A LIGHT CHOP, BECOMING SMOOTH TO A LIGHT  
CHOP. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
SUNDAY NIGHT  
SOUTH TO SOUTHWEST WINDS NEAR 5 KNOTS, BECOMING  
SOUTHEAST TO SOUTH. BAY WATERS SMOOTH. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
MONDAY  
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS. BAY WATERS  
SMOOTH. ISOLATED SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT AND TUESDAY  
EAST WINDS 5 TO 10 KNOTS. BAY WATERS  
SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.   
TUESDAY NIGHT  
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS. BAY  
WATERS SMOOTH TO A LIGHT CHOP. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.  
 
 
 
GMZ032-035-042045-  
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-  
431 AM EDT FRI JUL 4 2025  
   
TODAY  
SOUTHWEST WINDS 5 TO 10 KNOTS, INCREASING TO NEAR 10  
KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT  
CHOP, BECOMING A LIGHT CHOP. NUMEROUS SHOWERS AND SCATTERED  
THUNDERSTORMS.   
TONIGHT  
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS AROUND 1  
FOOT. NEARSHORE WATERS A LIGHT CHOP. SCATTERED SHOWERS AND  
THUNDERSTORMS.    
SATURDAY  
SOUTHWEST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.  
NEARSHORE WATERS A LIGHT CHOP. SCATTERED SHOWERS AND  
THUNDERSTORMS.    
SATURDAY NIGHT  
SOUTHWEST WINDS NEAR 10 KNOTS, DECREASING TO 5  
TO 10 KNOTS. SEAS SUBSIDING TO 1 FOOT OR LESS. NEARSHORE WATERS A  
LIGHT CHOP, BECOMING SMOOTH TO A LIGHT CHOP. SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS.    
SUNDAY  
SOUTH TO SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING  
VARIABLE. SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH TO A LIGHT  
CHOP. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
SUNDAY NIGHT  
VARIABLE WINDS NEAR 5 KNOTS, BECOMING SOUTHEAST.  
SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
MONDAY  
EAST TO SOUTHEAST WINDS NEAR 5 KNOTS, INCREASING TO 5 TO  
10 KNOTS. SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH, BECOMING  
SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT  
EAST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR LESS.  
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
TUESDAY  
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, INCREASING TO  
NEAR 10 KNOTS. SEAS 1 FOOT OR LESS, BUILDING TO AROUND 1 FOOT.  
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP, BECOMING A LIGHT CHOP.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY NIGHT  
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS,  
DECREASING TO NEAR 10 KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS  
A LIGHT TO MODERATE CHOP, BECOMING A LIGHT CHOP. SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS.  
 
 
 
GMZ042>044-042045-  
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-  
431 AM EDT FRI JUL 4 2025  
   
TODAY  
SOUTHWEST TO WEST WINDS 5 TO 10 KNOTS, INCREASING TO NEAR  
10 KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT  
CHOP, BECOMING A LIGHT CHOP. SCATTERED SHOWERS AND THUNDERSTORMS.   
TONIGHT  
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS AROUND  
1 FOOT. NEARSHORE WATERS A LIGHT CHOP. SCATTERED SHOWERS AND  
THUNDERSTORMS.    
SATURDAY  
SOUTHWEST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.  
NEARSHORE WATERS A LIGHT CHOP. SCATTERED SHOWERS AND  
THUNDERSTORMS.    
SATURDAY NIGHT  
SOUTHWEST WINDS NEAR 10 KNOTS, DECREASING TO 5  
TO 10 KNOTS. SEAS AROUND 1 FOOT. NEARSHORE WATERS A LIGHT CHOP,  
BECOMING SMOOTH TO A LIGHT CHOP. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.    
SUNDAY  
SOUTH TO SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING  
VARIABLE AND DECREASING TO NEAR 5 KNOTS. SEAS 1 FOOT OR LESS.  
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP, BECOMING SMOOTH.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
SUNDAY NIGHT  
VARIABLE WINDS NEAR 5 KNOTS, BECOMING SOUTHEAST.  
SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
MONDAY  
EAST WINDS NEAR 5 KNOTS, INCREASING TO 5 TO 10 KNOTS.  
SEAS BUILDING TO AROUND 1 FOOT. NEARSHORE WATERS SMOOTH, BECOMING  
SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT  
EAST WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.  
NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
TUESDAY  
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY NIGHT  
EAST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.  
NEARSHORE WATERS A LIGHT CHOP. ISOLATED SHOWERS AND  
THUNDERSTORMS.  
 
 
 
GMZ052>055-072>075-042045-  
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-  
431 AM EDT FRI JUL 4 2025  
   
TODAY  
SOUTHWEST WINDS 5 TO 10 KNOTS, INCREASING TO NEAR 10  
KNOTS. SEAS AROUND 1 FOOT. WAVE DETAIL: EAST TO SOUTHEAST 1 FOOT  
AT 4 SECONDS. SCATTERED SHOWERS AND THUNDERSTORMS.    
TONIGHT  
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS AROUND 1  
FOOT. WAVE DETAIL: EAST 1 FOOT AT 3 SECONDS. SCATTERED SHOWERS AND  
THUNDERSTORMS.    
SATURDAY  
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.  
WAVE DETAIL: SOUTH TO SOUTHWEST 1 FOOT AT 2 SECONDS. SCATTERED  
SHOWERS AND THUNDERSTORMS.    
SATURDAY NIGHT  
SOUTH TO SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS  
AROUND 1 FOOT. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
SUNDAY  
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT. ISOLATED  
SHOWERS AND THUNDERSTORMS.    
SUNDAY NIGHT  
EAST WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.  
ISOLATED SHOWERS AND THUNDERSTORMS.    
MONDAY  
EAST WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT. ISOLATED  
SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT  
EAST WINDS NEAR 10 KNOTS. SEAS AROUND 1 FOOT.  
ISOLATED SHOWERS AND THUNDERSTORMS.    
TUESDAY  
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. SEAS 1 TO  
2 FEET. ISOLATED SHOWERS AND THUNDERSTORMS.    
TUESDAY NIGHT  
EAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2 FEET.  
ISOLATED SHOWERS AND THUNDERSTORMS.  
 
 
 
GMZ033-034-042045-  
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-  
431 AM EDT FRI JUL 4 2025  
   
TODAY  
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS 1 TO 2 FEET.  
WAVE DETAIL: WEST 2 FEET AT 5 SECONDS. NUMEROUS SHOWERS AND  
SCATTERED THUNDERSTORMS.    
TONIGHT  
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS 1 TO 2  
FEET. WAVE DETAIL: WEST 2 FEET AT 4 SECONDS. SCATTERED SHOWERS AND  
THUNDERSTORMS.    
SATURDAY  
SOUTHWEST TO WEST WINDS NEAR 10 KNOTS. SEAS 1 TO  
2 FEET. WAVE DETAIL: SOUTHWEST TO WEST 1 FOOT AT 3 SECONDS.  
NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS.    
SATURDAY NIGHT  
SOUTHWEST WINDS NEAR 10 KNOTS, DECREASING TO 5  
TO 10 KNOTS. SEAS 1 TO 2 FEET, SUBSIDING TO AROUND 1 FOOT.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.   
SUNDAY  
SOUTHWEST WINDS 5 TO 10 KNOTS, DECREASING TO NEAR 5  
KNOTS. SEAS AROUND 1 FOOT. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS.   
SUNDAY NIGHT  
SOUTHWEST WINDS NEAR 5 KNOTS, BECOMING SOUTHEAST  
TO SOUTH AFTER MIDNIGHT. SEAS AROUND 1 FOOT. ISOLATED SHOWERS AND  
THUNDERSTORMS.    
MONDAY  
EAST TO SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
1 FOOT. ISOLATED SHOWERS AND THUNDERSTORMS.    
MONDAY NIGHT  
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS. SEAS  
AROUND 1 FOOT. ISOLATED SHOWERS AND THUNDERSTORMS.    
TUESDAY  
NORTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY NIGHT  
EAST WINDS 5 TO 10 KNOTS. SEAS AROUND 1 FOOT.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.  
 
 
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