175  
AGXX40 KNHC 281841  
MIMATS  
 
MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
241 PM EDT TUE MAR 28 2017  
 
MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO, CARIBBEAN SEA,  
AND TROPICAL NORTH ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W  
AND THE SOUTHWEST NORTH ATLANTIC INCLUDING THE BAHAMAS  
   
..GULF OF MEXICO
 
 
 
LIGHT WINDS PREVAIL OVER THE EASTERN GULF WITH MODERATE TO FRESH  
SOUTHEAST WINDS OVER THE WESTERN GULF AS WEAK HIGH PRESSURE IS  
NOW CENTERED FROM FLORIDA TO THE BAHAMAS. THE PRESSURE GRADIENT  
BETWEEN THIS HIGH AND DEEPENING LOW PRESSURE OVER THE CENTRAL  
UNITED STATES WILL SUPPORT THE SOUTHEAST WINDS OVER THE WESTERN  
GULF TO INCREASE TO 20 TO 25 KT TONIGHT THROUGH THURSDAY. A  
THERMAL TROUGH WILL ALSO ENHANCE WINDS OVER THE EASTERN BAY OF  
CAMPECHE THE NEXT TWO NIGHTS. A COLD FRONT ASSOCIATED WITH THE  
LOW WILL CROSS THE NORTHWEST GULF ON THURSDAY, THE NORTH CENTRAL  
GULF THURSDAY NIGHT, AND THE NORTHEAST GULF ON FRIDAY. STRONG TO  
NEAR GALE SOUTHERLY WINDS AND NUMEROUS SHOWERS AND THUNDERSTORMS  
ARE EXPECTED TO SPREAD EAST AHEAD OF THIS FRONT THURSDAY THROUGH  
FRIDAY ACROSS THE NORTHERN GULF. HIGH PRESSURE WILL BECOME  
CENTERED NORTH OF THE REGION THIS UPCOMING WEEKEND, SUPPORTING  
MAINLY MODERATE EASTERLY WINDS OVER THE BASIN.  
 
...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N  
BETWEEN 55W AND 64W...  
 
GENTLE TO MODERATE WINDS COVER THE CARIBBEAN TODAY AS A WEAK  
PRESSURE PATTERN CONTINUES. HIGH PRESSURE BUILDING SOUTHWARD  
OVER THE BAHAMAS WILL BRING AN INCREASE IN THE TRADES TO THE  
ENTIRE CARIBBEAN STARTING TONIGHT. BY WEDNESDAY NIGHT, FRESH TO  
STRONG SOUTHEAST WINDS WILL PULSE OVER THE GULF OF HONDURAS AND  
ALONG THE NE COAST OF COLOMBIA. THIS PATTERN OF MODERATE TO FRESH  
TRADES OVER THE MAJORITY OF THE CARIBBEAN AND FRESH TO STRONG  
WINDS OVER THE GULF OF HONDURAS AND COLOMBIA COAST WILL PERSIST  
THROUGH SATURDAY NIGHT.  
 
OVER THE TROPICAL ATLANTIC WATERS, MAINLY MODERATE TRADES WILL  
PREVAIL THROUGH WEDNESDAY WITH SEAS OF 5 TO 7 FT. A FRONTAL  
TROUGH EXTENDING FROM DEPARTING LOW PRESSURE NORTH OF THE REGION WILL  
REACH THE NORTHERN WATERS BY THURSDAY, DISRUPTING THE TRADE WIND  
PATTERN WITH LIGHT TO GENTLE WINDS PREVAILING OVER THE  
NORTHERN WATERS INTO THE WEEKEND. NORTHERLY SWELL OF 6 TO 8 FT  
FROM THE LOW WILL PROPAGATE ACROSS THE NORTHERN WATERS LATE THIS  
WEEK.  
   
..SW N ATLANTIC INCLUDING THE BAHAMAS
 
 
THE LOW THAT HAS BEEN CROSSING OUR NORTHEAST ZONES THE PAST FEW  
DAYS HAS FINALLY EXITED THE ZONES THIS AFTERNOON. GALE FORCE  
WINDS OVER THE NORTHWEST QUADRANT WILL CONTINUE TO CLIP OUR  
EXTREME NE WATERS NORTH OF 29N EAST OF 66W THROUGH THIS EVENING.  
STRONG TO NEAR GALE FORCE WINDS WILL PERSIST ACROSS THIS  
NORTHEAST ZONE INTO WEDNESDAY MORNING, WITH LARGE SWELL UP TO 18  
FT ACROSS OUR EASTERN ZONES DIMINISHING BELOW 8 FT LATE WEDNESDAY  
NIGHT. HIGH PRESSURE IS BUILDING OVER THE BAHAMAS WITH LIGHT  
WINDS. THIS HIGH WILL EXPAND IN COVERAGE THROUGH WEDNESDAY OVER  
OUR WATERS. THEN, A COLD FRONT IS EXPECTED TO DIP SOUTHWARD OVER  
THE NORTHERN ZONES WEDNESDAY NIGHT, FORCING THE HIGH TO SLIDE  
SOUTHEASTWARD AND WEAKEN. MAINLY A MODERATE NORTHERLY WIND SHIFT  
WILL ACCOMPANY THE FRONT, BEFORE IT DISSIPATES ALONG ABOUT 27N  
THURSDAY NIGHT. AFTER THAT TIME, RETURN FLOW WILL DEVELOP AND THE  
PRESSURE GRADIENT WILL INCREASE OVER THE NORTHWEST WATERS  
BETWEEN HIGH PRESSURE OVER THE NORTHEAST ATLANTIC AND A  
APPROACHING FRONT OVER THE INLAND SOUTHEASTERN UNITED STATES.  
THE STRONG SOUTHERLY WINDS ACROSS THE NORTHWEST ZONES FRIDAY WILL  
SLIDE EAST AHEAD OF THE FRONT AS THE FRONT BEGINS TO MOVE ACROSS  
THE NORTHWEST ZONES ON SATURDAY. SEAS TO 9 FT CAN BE EXPECTED IN  
THIS SOUTHERLY FLOW AHEAD OF THE FRONT. THE FRONT WILL THEN  
REACH FROM NEAR BERMUDA TO SOUTH FLORIDA BY SATURDAY NIGHT.  
 

 
   
WARNINGS
 
ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE  
COORDINATED THROUGH AWIPS II COLLABORATION CHAT, OR BY  
TELEPHONE:  
   
GULF OF MEXICO
 
 
NONE.  
 
.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN  
55W AND 64W...  
NONE.  
   
SW N ATLANTIC INCLUDING THE BAHAMAS
 
   
AMZ115...ATLANTIC FROM 27N TO 31N BETWEEN 65W AND 70W
 
 
GALE WARNING TODAY INTO TONIGHT.  
 

 
 
*FOR DETAILED ZONE DESCRIPTIONS, PLEASE VISIT:  
HTTP://WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF  
 
NOTE: GRIDDED MARINE FORECASTS ARE AVAILABLE IN THE NATIONAL  
DIGITAL FORECAST DATABASE (NDFD) AT:  
HTTP://WWW.NHC.NOAA.GOV/MARINE/GRIDS.PHP  
 
FOR ADDITIONAL INFORMATION, PLEASE VISIT:  
HTTP://WWW.NHC.NOAA.GOV/MARINE  
 

 
 
.FORECASTER LATTO. NATIONAL HURRICANE CENTER.  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab TPC Page Main Text Page