323  
FZUS52 KKEY 190230  
CWFKEY  
 
COASTAL WATERS FORECAST FOR THE FLORIDA KEYS  
NATIONAL WEATHER SERVICE KEY WEST FL  
1030 PM EDT MON MAR 18 2019  
 
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.  
 
GMZ005-190830-  
SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS  
1030 PM EDT MON MAR 18 2019  
   
SYNOPSIS
 
FRESH TO STRONG NORTHEAST BREEZES ARE EXPECTED  
TONIGHT THROUGH TUESDAY NIGHT AS LOW PRESSURE MOVES EASTWARD ALONG  
A STALLED FRONTAL BOUNDARY OVER THE STRAITS OF FLORIDA. NORTHEAST  
BREEZES WILL PEAK TUESDAY AFTERNOON AND EVENING, WITH A SHORT  
PERIOD OF NEAR GALE BREEZES POSSIBLE. NORTHEAST BREEZES WILL  
GRADUALLY SLACKEN WEDNESDAY THROUGH THURSDAY, FOLLOWED BY  
FRESHENING NORTHERLY BREEZES THURSDAY NIGHT.  
 
THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM AS OF  
MARCH 19...  
 
50 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.  
33 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.  
26 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.  
15 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.  
8 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON.  
11 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.  
5 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 NAVAL OCEANOGRAPHIC OFFICE.  
 

 
 
GMZ031-190830-  
FLORIDA BAY INCLUDING BARNES SOUND, BLACKWATER SOUND, AND  
BUTTONWOOD SOUND-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TUESDAY
 
 
   
OVERNIGHT
 
NORTH TO NORTHEAST WINDS NEAR 10 KNOTS, INCREASING TO  
NEAR 15 KNOTS. BAY WATERS A LIGHT CHOP, BECOMING A MODERATE CHOP.  
NUMEROUS SHOWERS.   
TUESDAY
 
NORTHEAST WINDS 15 TO 20 KNOTS, INCREASING TO NEAR 25  
KNOTS. BAY WATERS CHOPPY, BECOMING EXTREMELY ROUGH. WIDESPREAD  
SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY NIGHT
 
NORTH TO NORTHEAST WINDS 20 TO 25 KNOTS,  
DECREASING TO 15 TO 20 KNOTS AFTER MIDNIGHT. BAY WATERS VERY  
ROUGH, BECOMING CHOPPY. NUMEROUS SHOWERS.    
WEDNESDAY
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. BAY WATERS A  
MODERATE CHOP. SCATTERED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. BAY  
WATERS A MODERATE CHOP. ISOLATED SHOWERS.    
THURSDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. BAY WATERS A LIGHT TO  
MODERATE CHOP. ISOLATED SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY.    
FRIDAY
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. BAY WATERS A  
LIGHT TO MODERATE CHOP.    
FRIDAY NIGHT
 
NORTHEAST WINDS NEAR 15 KNOTS. BAY WATERS A  
MODERATE CHOP.    
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. BAY WATERS  
CHOPPY.   
SATURDAY NIGHT
 
EAST WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY.  
ISOLATED SHOWERS.  
 

 
 
GMZ032-035-190830-  
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-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY IN EFFECT
 
 
   
OVERNIGHT
 
NORTHEAST WINDS 15 TO 20 KNOTS, INCREASING TO NEAR 20  
KNOTS. SEAS 1 TO 3 FEET, EXCEPT 3 TO 5 FEET WEST OF THE MARQUESAS  
KEYS. NEARSHORE WATERS CHOPPY, BECOMING ROUGH. NUMEROUS SHOWERS  
AFTER MIDNIGHT.   
TUESDAY
 
NORTHEAST WINDS 20 TO 25 KNOTS, INCREASING TO 25 TO 30  
KNOTS. SEAS 2 TO 5 FEET, EXCEPT 5 TO 6 FEET WEST OF THE MARQUESAS  
KEYS. NEARSHORE WATERS VERY ROUGH, BECOMING EXTREMELY ROUGH.  
WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY NIGHT
 
NORTHEAST WINDS NEAR 25 KNOTS, DECREASING TO  
NEAR 20 KNOTS. SEAS 2 TO 4 FEET, EXCEPT 4 TO 6 FEET WEST OF THE  
MARQUESAS KEYS. NEARSHORE WATERS VERY ROUGH, BECOMING ROUGH.  
NUMEROUS SHOWERS.   
WEDNESDAY
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 2 TO  
4 FEET. NEARSHORE WATERS CHOPPY. SCATTERED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 1  
TO 3 FEET. NEARSHORE WATERS A MODERATE CHOP. ISOLATED SHOWERS.    
THURSDAY
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. ISOLATED  
SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET.  
NEARSHORE WATERS CHOPPY.    
FRIDAY
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP.    
FRIDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A MODERATE CHOP.    
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 3  
FEET. NEARSHORE WATERS CHOPPY. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. SEAS 2 TO 3 FEET.  
NEARSHORE WATERS ROUGH. ISOLATED SHOWERS.  
 

 
 
GMZ044-190830-  
HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL  
OUT TO THE REEF-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY IN EFFECT
 
 
   
OVERNIGHT
 
NORTHEAST WINDS 15 TO 20 KNOTS, INCREASING TO NEAR 20  
KNOTS. SEAS 2 TO 3 FEET, INCREASING TO 3 TO 4 FEET. NEARSHORE  
WATERS CHOPPY, BECOMING ROUGH. NUMEROUS SHOWERS, MAINLY AFTER  
MIDNIGHT.   
TUESDAY
 
NORTHEAST WINDS 20 TO 25 KNOTS, INCREASING TO NEAR 25  
KNOTS. SEAS 2 TO 5 FEET. WEST OF COSGROVE SHOAL LIGHT, SEAS 4 TO  
6 FEET. NEARSHORE WATERS VERY ROUGH, BECOMING EXTREMELY ROUGH.  
WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS.   
TUESDAY NIGHT
 
NORTHEAST WINDS 20 TO 25 KNOTS, DECREASING TO  
NEAR 20 KNOTS. SEAS 2 TO 4 FEET, EXCEPT 4 TO 5 FEET WEST OF  
COSGROVE SHOAL LIGHT. NEARSHORE WATERS VERY ROUGH, BECOMING  
ROUGH. NUMEROUS SHOWERS.    
WEDNESDAY
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 2 TO  
3 FEET. NEARSHORE WATERS CHOPPY. SCATTERED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 1  
TO 3 FEET. NEARSHORE WATERS A MODERATE CHOP. ISOLATED SHOWERS.    
THURSDAY
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. ISOLATED  
SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET.  
NEARSHORE WATERS CHOPPY.    
FRIDAY
 
NORTH WINDS NEAR 15 KNOTS. SEAS 1 TO 3 FEET. NEARSHORE  
WATERS A MODERATE CHOP.   
FRIDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A MODERATE CHOP.    
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4  
FEET. NEARSHORE WATERS CHOPPY. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. SEAS 3 TO 5 FEET.  
NEARSHORE WATERS ROUGH. ISOLATED SHOWERS.  
 

 
 
GMZ042-043-190830-  
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-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TUESDAY
 
 
   
OVERNIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS, INCREASING  
TO 15 TO 20 KNOTS. SEAS BUILDING TO 2 TO 3 FEET. NEARSHORE WATERS  
A MODERATE CHOP, BECOMING CHOPPY. NUMEROUS SHOWERS.    
TUESDAY
 
NORTHEAST WINDS NEAR 20 KNOTS, INCREASING TO NEAR 25  
KNOTS. SEAS 2 TO 4 FEET, BUILDING TO 3 TO 4 FEET. WEST OF COSGROVE  
SHOAL LIGHT, SEAS BUILDING TO 4 TO 6 FEET. NEARSHORE WATERS  
ROUGH, BECOMING EXTREMELY ROUGH. WIDESPREAD SHOWERS AND ISOLATED  
THUNDERSTORMS.   
TUESDAY NIGHT
 
NORTHEAST WINDS 20 TO 25 KNOTS, DECREASING TO  
NEAR 20 KNOTS. SEAS 2 TO 4 FEET, EXCEPT 4 TO 5 FEET WEST OF  
COSGROVE SHOAL LIGHT. NEARSHORE WATERS VERY ROUGH, BECOMING  
ROUGH. NUMEROUS SHOWERS.    
WEDNESDAY
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 2 TO  
3 FEET. NEARSHORE WATERS CHOPPY. SCATTERED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 1  
TO 3 FEET. NEARSHORE WATERS A MODERATE CHOP. ISOLATED SHOWERS.    
THURSDAY
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A LIGHT TO MODERATE CHOP. ISOLATED  
SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 2 TO 3 FEET.  
NEARSHORE WATERS CHOPPY.    
FRIDAY
 
NORTH WINDS NEAR 15 KNOTS. SEAS 1 TO 3 FEET. NEARSHORE  
WATERS A MODERATE CHOP.   
FRIDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 1 TO  
3 FEET. NEARSHORE WATERS A MODERATE CHOP.    
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4  
FEET. NEARSHORE WATERS CHOPPY. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. SEAS 3 TO 5 FEET.  
NEARSHORE WATERS ROUGH. ISOLATED SHOWERS.  
 

 
 
GMZ054-055-074-075-190830-  
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 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-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY IN EFFECT
 
 
   
OVERNIGHT
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS, INCREASING TO  
NEAR 20 KNOTS. SEAS 3 TO 6 FEET. NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS.   
TUESDAY
 
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 4 TO 7 FEET.  
WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS.    
TUESDAY NIGHT
 
NORTHEAST WINDS NEAR 25 KNOTS, DECREASING TO NEAR  
20 KNOTS. SEAS 6 TO 9 FEET, SUBSIDING TO 5 TO 8 FEET. NUMEROUS  
SHOWERS AND ISOLATED THUNDERSTORMS.   
WEDNESDAY
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO  
7 FEET. SCATTERED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3  
TO 6 FEET. SCATTERED SHOWERS.    
THURSDAY
 
NORTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 5 FEET.  
SCATTERED SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 6 FEET.  
ISOLATED SHOWERS.    
FRIDAY
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 6 FEET.    
FRIDAY NIGHT
 
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO 5 FEET.   
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6  
FEET. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. SEAS 4 TO 7 FEET.  
SCATTERED SHOWERS.  
 

 
 
GMZ052-053-072-073-190830-  
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 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-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TUESDAY
 
 
   
OVERNIGHT
 
NORTHEAST TO EAST WINDS 10 TO 15 KNOTS, INCREASING TO  
NEAR 15 KNOTS. SEAS 2 TO 3 FEET, BUILDING TO 4 TO 5 FEET.  
NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS, BECOMING NORTH  
TO NORTHEAST AND INCREASING TO 20 TO 25 KNOTS. SEAS 4 TO 7 FEET,  
BUILDING TO 5 TO 8 FEET. WIDESPREAD SHOWERS AND SCATTERED  
THUNDERSTORMS.   
TUESDAY NIGHT
 
NORTHEAST WINDS NEAR 25 KNOTS, DECREASING TO NEAR  
20 KNOTS. SEAS 6 TO 9 FEET, SUBSIDING TO 5 TO 8 FEET. NUMEROUS  
SHOWERS AND ISOLATED THUNDERSTORMS.   
WEDNESDAY
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO  
7 FEET. SCATTERED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3  
TO 6 FEET. SCATTERED SHOWERS.    
THURSDAY
 
NORTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 5 FEET.  
SCATTERED SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 6 FEET.  
ISOLATED SHOWERS.    
FRIDAY
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 6 FEET.    
FRIDAY NIGHT
 
NORTHEAST WINDS NEAR 15 KNOTS. SEAS 3 TO 5 FEET.   
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6  
FEET. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. SEAS 4 TO 7 FEET.  
SCATTERED SHOWERS.  
 

 
 
GMZ033-034-190830-  
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-  
1030 PM EDT MON MAR 18 2019  
   
..SMALL CRAFT ADVISORY IN EFFECT
 
 
   
OVERNIGHT
 
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS BUILDING TO 4  
TO 7 FEET. WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS.    
TUESDAY
 
NORTHEAST WINDS NEAR 25 KNOTS, INCREASING TO 25 TO 30  
KNOTS, THEN BECOMING NORTH TO NORTHEAST AND DECREASING TO 20 TO  
25 KNOTS IN THE AFTERNOON. SEAS 6 TO 9 FEET, SUBSIDING TO 5 TO 7  
FEET IN THE AFTERNOON. WIDESPREAD SHOWERS AND ISOLATED  
THUNDERSTORMS.    
TUESDAY NIGHT
 
NORTHEAST WINDS 20 TO 25 KNOTS, DECREASING TO  
NEAR 20 KNOTS. SEAS 4 TO 7 FEET. NUMEROUS SHOWERS.    
WEDNESDAY
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 6  
FEET. ISOLATED SHOWERS.    
WEDNESDAY NIGHT
 
NORTH TO NORTHEAST WINDS 15 TO 20 KNOTS. SEAS  
3 TO 5 FEET. ISOLATED SHOWERS.    
THURSDAY
 
NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. SEAS 2 TO  
4 FEET. ISOLATED SHOWERS.    
THURSDAY NIGHT
 
NORTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET.    
FRIDAY
 
NORTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
FRIDAY NIGHT
 
NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 4 FEET.   
SATURDAY
 
NORTHEAST TO EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5  
FEET. ISOLATED SHOWERS.    
SATURDAY NIGHT
 
EAST WINDS NEAR 20 KNOTS. SEAS 4 TO 6 FEET.  
ISOLATED SHOWERS.  
 

 
 
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