753  
AGXX40 KNHC 290433  
MIMATS  
 
MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
1233 AM EDT MON MAY 29 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
 
 
 
A THERMAL TROUGH WILL DEVELOP LATE EACH AFTERNOON OVER THE YUCATAN  
PENINSULA, AND SHIFT W ACROSS THE SOUTHWESTERN GULF WATERS,  
GENERALLY TO S OF 24N BETWEEN 90W AND 93W, DURING THE OVERNIGHT  
AND EARLY DAYLIGHT HOURS, AND GRADUALLY LOSE IDENTITY ALONG ABOUT  
94W BY LATE EACH MORNING. EXPECT A NE-E-SE 15-20 KT WIND SHIFT  
ALONG THE TROUGH AXIS, EXCEPT 20 TO 25 KT ALONG THE N COAST OF  
THE YUCATAN PENINSULA THIS EVENING, WITH GUIDANCE HINTING THAT  
THESE BRIEF STRONG CONDITIONS WILL DEVELOP AGAIN ON THU AND FRI  
EVENINGS. EXPECT SEAS TO BUILD BRIEFLY TO 6 FT JUST W OF THE  
STRONG WINDS.  
 
A SURFACE HIGH WILL MEANDER OVER THE FAR NE GULF WATERS THROUGH  
FRI NIGHT WITH MODERATE SOUTHERLY RETURN FLOW OVER THE WATERS W  
OF 88W, INCREASING TO FRESH BREEZE EACH EVENING, EXCEPT LOCALLY  
STRONG SE FLOW FORECAST JUST OFFSHORE OF VERACRUZ MEXICO. EXPECT  
3 TO 5 FT SEAS THROUGHOUT THE PERIOD. HOWEVER, GUIDANCE IS  
SUGGESTING THE PRESSURE GRADIENT WILL TIGHTEN THU NIGHT WITH A  
SWATH OF STRONG SE WIND FROM 21N TO 27N ALONG 92W AT SUNRISE FRI.  
 
LIGHT AND VARIABLE WINDS WILL SURROUND THE HIGH CENTER, WITH LIGHT  
TO MODERATE ANTICYCLONIC FLOW FORECAST E OF 88W THROUGH FRI  
NIGHT, EXCEPT BECOMING A FRESH BREEZE ACROSS THE FL STRAIGHTS  
DURING THE EVENINGS. WIDESPREAD FOG OBSERVED, WITH VISIBILITIES  
OF 1 TO 3 MILES, OVER THE NW GULF THIS MORNING, WILL BE CARRIED  
IN WEATHER GRIDS AHEAD OF CONVECTION CURRENTLY INLAND BUT  
SHIFTING E WITH TIME.  
 
...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN  
55W AND 64W...  
 
ATLC HIGH PRESSURE WILL SUPPORT FRESH E TRADES, WITH 5-8 FT  
SEAS, ACROSS THE CENTRAL CARIBBEAN THROUGH TUE MORNING, WITH LOCALLY  
STRONG NOCTURNAL TRADES WITHIN ABOUT 180 NM OF THE NW COAST OF  
COLOMBIA, AND ACROSS THE GULF OF VENEZUELA. THE PRESSURE GRADIENT  
WILL TIGHTEN ON TUE NIGHT, WITH STRONG E WINDS EXPANDING N FROM  
THE COLOMBIAN COAST TO ALONG 16N BETWEEN ABOUT 70W AND 78W ON  
WED, AND EXPANDING FURTHER N AND FURTHER W ON THU AND FRI WITH  
SEAS BUILDING TO 11 FT NEAR 13N75W. STRONG NOCTURNAL E TO SE  
TRADES FORECAST ACROSS THE GULF OF HONDURAS THROUGH FRI NIGHT.  
TROPICAL WAVES OVER THE E CARIBBEAN AND OVER THE TROPICAL WATERS  
E OF THE WINDWARDS, WILL CONTINUE WESTWARD ACCOMPANIED BY A  
MODERATE TO FRESH NE-E-SE WIND SHIFT AND ONLY A SLIGHT  
ENHANCEMENT OF CONVECTION.  
   
..SW N ATLANTIC INCLUDING THE BAHAMAS
 
 
A RIDGE WILL EXTEND E TO W ALONG 26N LATER TODAY WHERE IT WILL  
MEANDER THROUGH TUE, THEN SHIFT N TO ALONG 28N ON TUE NIGHT AND  
WED AND ALONG 29N ON WED NIGHT AND THU AND ALONG 30N ON FRI.  
MODERATE TO FRESH EASTERLIES ARE EXPECTED S OF 23N, EXCEPT  
BECOMING A STRONG E BREEZE ALONG THE N COAST OF HISPANIOLA DURING  
THE EVENINGS. MODERATE SW FLOW FORECAST N OF THE RIDGE.  
 

 
   
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
 
 
NONE.  
 

 
 
*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 NELSON. NATIONAL HURRICANE CENTER.  
 
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