707  
FZUS52 KKEY 050922  
CWFKEY  
 
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS  
NATIONAL WEATHER SERVICE KEY WEST FL  
422 AM EST FRI MAR 5 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.  
 
GMZ005-051530-  
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS  
422 AM EST FRI MAR 5 2021  
   
SYNOPSIS
 
A TROUGH OF LOW PRESSURE WILL SINK INTO THE BAHAMAS TO  
ACROSS THE STRAITS OF FLORIDA THROUGH TONIGHT. MEANWHILE, AN AREA  
OF LOW PRESSURE WILL DIVE SOUTHEASTWARD THROUGH THE EASTERN GULF  
OF MEXICO AND ACROSS THE SOUTHERN HALF OF THE FLORIDA PENINSULA  
SATURDAY AND SATURDAY EVENING, PUSHING A FRONTAL BOUNDARY THROUGH  
THE COASTAL WATERS OF THE FLORIDA KEYS. FRESHENING NORTH BREEZES  
WILL OVERSPREAD OUR ENTIRE MARINE DISTRICT LATE SATURDAY NIGHT,  
BEFORE BECOMING STRONG FOR THE BALANCE OF THE WEEKEND AND PERSIST  
WELL INTO NEXT WEEK.  
 
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF  
MARCH 04...  
 
58 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.  
42 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.  
32 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.  
18 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.  
13 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON.  
11 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.  
8 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.  
8 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.  
 
GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.  
 

 
 
GMZ031-051530-  
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND  
BUTTONWOOD SOUND-  
422 AM EST FRI MAR 5 2021  
   
TODAY
 
NORTHWEST TO NORTH WINDS NEAR 15 KNOTS EARLY, BECOMING  
NORTHEAST TO EAST NEAR 10 KNOTS THIS AFTERNOON. BAY WATERS A  
MODERATE CHOP, BECOMING A LIGHT CHOP.    
TONIGHT
 
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. BAY WATERS A  
LIGHT CHOP. ISOLATED SHOWERS.   
SATURDAY
 
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, BECOMING SOUTH  
TO SOUTHWEST IN THE AFTERNOON. BAY WATERS SMOOTH TO A LIGHT CHOP.  
SCATTERED SHOWERS DEVELOPING.    
SATURDAY NIGHT
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS,  
INCREASING TO NEAR 15 KNOTS. BAY WATERS A LIGHT TO MODERATE CHOP,  
BECOMING A MODERATE CHOP. SCATTERED SHOWERS.   
SUNDAY
 
NORTHEAST WINDS INCREASING TO NEAR 20 KNOTS. BAY WATERS  
BECOMING ROUGH. ISOLATED SHOWERS EARLY.    
SUNDAY NIGHT
 
NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25  
KNOTS. BAY WATERS BECOMING VERY ROUGH.    
MONDAY THROUGH TUESDAY
 
NORTHEAST TO EAST WINDS 20 TO 25 KNOTS.  
BAY WATERS VERY ROUGH.   
TUESDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. BAY WATERS ROUGH.  
ISOLATED SHOWERS.  
 

 
 
GMZ032-035-051530-  
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-  
422 AM EST FRI MAR 5 2021  
   
TODAY
 
MAINLY NORTH WINDS NEAR 15 KNOTS, BECOMING NORTHEAST TO  
EAST AND DECREASING TO NEAR 10 KNOTS IN THE AFTERNOON. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A MODERATE CHOP, BECOMING A LIGHT CHOP.   
TONIGHT.
 
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
1 FOOT. NEARSHORE WATERS SMOOTH TO A LIGHT CHOP. ISOLATED  
SHOWERS.   
SATURDAY
 
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, BECOMING SOUTH  
TO SOUTHWEST. SEAS 1 FOOT OR LESS. NEARSHORE WATERS SMOOTH TO A  
LIGHT CHOP. SCATTERED SHOWERS DEVELOPING.   
SATURDAY NIGHT
 
NORTHWEST TO NORTH WINDS NEAR 15 KNOTS,  
BECOMING NORTH TO NORTHEAST AND INCREASING TO NEAR 20 KNOTS. SEAS  
BUILDING TO 2 TO 3 FEET. NEARSHORE WATERS A MODERATE CHOP,  
BECOMING ROUGH. SCATTERED SHOWERS.    
SUNDAY
 
NORTH TO NORTHEAST WINDS NEAR 20 KNOTS. SEAS 2 TO 4  
FEET. NEARSHORE WATERS ROUGH. ISOLATED SHOWERS EARLY.   
SUNDAY NIGHT
 
NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25  
KNOTS. SEAS 2 TO 4 FEET. WEST OF THE MARQUESAS KEYS, SEAS  
BUILDING TO 5 TO 6 FEET. NEARSHORE WATERS BECOMING VERY ROUGH.    
MONDAY THROUGH TUESDAY
 
NORTHEAST TO EAST WINDS 20 TO 25 KNOTS.  
SEAS 2 TO 4 FEET, EXCEPT 5 TO 7 FEET WEST OF THE MARQUESAS KEYS.  
NEARSHORE WATERS VERY ROUGH.    
TUESDAY NIGHT
 
EAST WINDS 20 TO 25 KNOTS. SEAS 2 TO 4 FEET,  
EXCEPT 4 TO 6 FEET WEST OF THE MARQUESAS KEYS. NEARSHORE WATERS  
VERY ROUGH. ISOLATED SHOWERS.  
 

 
 
GMZ042>044-051530-  
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-  
422 AM EST FRI MAR 5 2021  
   
TODAY
 
NORTH WINDS NEAR 15 KNOTS, BECOMING NORTHEAST TO EAST  
AND DECREASING TO NEAR 10 KNOTS. SEAS 1 TO 3 FEET. NEARSHORE  
WATERS A MODERATE CHOP, BECOMING A LIGHT CHOP.   
TONIGHT
 
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. SEAS 1 TO 2  
FEET. NEARSHORE WATERS A LIGHT CHOP. ISOLATED SHOWERS.   
SATURDAY
 
NORTHEAST TO EAST WINDS NEAR 10 KNOTS, BECOMING  
SOUTH TO SOUTHWEST 5 TO 10 KNOTS. SEAS 1 TO 2 FEET. NEARSHORE  
WATERS A LIGHT CHOP, BECOMING SMOOTH TO A LIGHT CHOP. SCATTERED  
SHOWERS DEVELOPING.    
SATURDAY NIGHT
 
NORTHWEST WINDS NEAR 15 KNOTS, BECOMING NORTH TO  
NORTHEAST AND INCREASING TO 15 TO 20 KNOTS. SEAS BUILDING TO 1 TO  
3 FEET. NEARSHORE WATERS A MODERATE CHOP, BECOMING CHOPPY.  
SCATTERED SHOWERS.   
SUNDAY
 
NORTH TO NORTHEAST WINDS NEAR 20 KNOTS. SEAS 3 TO 4  
FEET. NEARSHORE WATERS ROUGH. ISOLATED SHOWERS EARLY.   
SUNDAY NIGHT
 
NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25  
KNOTS. SEAS 3 TO 4 FEET BUILDING TO 3 TO 6 FEET AFTER MIDNIGHT.  
NEARSHORE WATERS BECOMING VERY ROUGH.    
MONDAY THROUGH TUESDAY
 
NORTHEAST TO EAST WINDS 20 TO 25 KNOTS.  
SEAS 3 TO 6 FEET. NEARSHORE WATERS VERY ROUGH.    
TUESDAY NIGHT
 
EAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 6 FEET.  
NEARSHORE WATERS VERY ROUGH. ISOLATED SHOWERS.  
 

 
 
GMZ052>055-072>075-051530-  
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-  
422 AM EST FRI MAR 5 2021  
   
TODAY
 
MAINLY NORTH WINDS NEAR 15 KNOTS, BECOMING NORTHEAST AND  
DECREASING TO 10 TO 15 KNOTS. SEAS 3 TO 5 FEET, SUBSIDING TO 2 TO  
4 FEET.   
TONIGHT
 
NORTHEAST TO EAST WINDS NEAR 10 KNOTS. SEAS 1 TO 3  
FEET. ISOLATED SHOWERS.    
SATURDAY
 
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, BECOMING SOUTH  
TO SOUTHWEST NEAR 10 KNOTS. SEAS 1 TO 2 FEET. SCATTERED SHOWERS  
DEVELOPING.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS, BECOMING NORTH  
TO NORTHEAST AND INCREASING TO NEAR 20 KNOTS. SEAS 2 TO 3 FEET,  
BUILDING TO 3 TO 5 FEET. SCATTERED SHOWERS.   
SUNDAY
 
NORTH TO NORTHEAST WINDS NEAR 20 KNOTS. SEAS 4 TO 7  
FEET. SEAS HIGHEST WEST OF THE DRY TORTUGAS AND EAST OF CRAIG KEY  
DUE TO NORTH SWELL. ISOLATED SHOWERS EARLY.   
SUNDAY NIGHT
 
NORTHEAST TO EAST WINDS INCREASING TO NEAR 25  
KNOTS. SEAS 5 TO 8 FEET, BUILDING TO 7 TO 10 FEET AFTER MIDNIGHT.   
MONDAY AND MONDAY NIGHT
 
NORTHEAST TO EAST WINDS NEAR 25 KNOTS.  
SEAS 7 TO 11 FEET.    
TUESDAY
 
NORTHEAST TO EAST WINDS NEAR 25 KNOTS. SEAS 7 TO  
11 FEET.   
TUESDAY NIGHT
 
EAST WINDS 20 TO 25 KNOTS. SEAS 6 TO 10 FEET.  
ISOLATED SHOWERS.  
 

 
 
GMZ033-034-051530-  
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-  
422 AM EST FRI MAR 5 2021  
   
TODAY
 
NORTH WINDS NEAR 15 KNOTS EARLY, BECOMING NORTHEAST TO  
EAST AND DECREASING TO 5 TO 10 KNOTS IN THE AFTERNOON. SEAS 2 TO  
3 FEET.    
TONIGHT
 
NORTHEAST WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET.   
SATURDAY
 
NORTHEAST TO EAST WINDS 5 TO 10 KNOTS, BECOMING SOUTH  
TO SOUTHWEST AND INCREASING TO 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.  
SCATTERED SHOWERS DEVELOPING.   
SATURDAY NIGHT
 
NORTHWEST WINDS NEAR 15 KNOTS, BECOMING NORTH TO  
NORTHEAST AND INCREASING TO 15 TO 20 KNOTS. SEAS 2 TO 4 FEET,  
BUILDING TO 3 TO 5 FEET AFTER MIDNIGHT. SCATTERED SHOWERS.   
SUNDAY
 
NORTH TO NORTHEAST WINDS NEAR 20 KNOTS. SEAS 3 TO 6  
FEET. ISOLATED SHOWERS EARLY.   
SUNDAY NIGHT
 
NORTHEAST TO EAST WINDS INCREASING TO 20 TO 25  
KNOTS. SEAS 4 TO 7 FEET.    
MONDAY AND MONDAY NIGHT
 
NORTHEAST TO EAST WINDS 20 TO 25  
KNOTS. SEAS 5 TO 8 FEET.    
TUESDAY
 
NORTHEAST TO EAST WINDS 20 TO 25 KNOTS. SEAS 4 TO 6  
FEET.   
TUESDAY NIGHT
 
EAST WINDS 20 TO 25 KNOTS. SEAS 3 TO 6 FEET.  
ISOLATED SHOWERS.  
 

 
 
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