692  
AGXX40 KNHC 070754  
MIMATS  
 
MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
254 AM EST TUE NOV 7 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
 
 
HIGH PRESSURE CENTERED OVER THE NORTHERN GULF IS SUPPORTING LIGHT  
BREEZES AND NEAR CALM CONDITIONS OVER THE NE GULF, WITH MODERATE  
SE RETURN FLOW OVER THE NW GULF, AND GENTLE TO MODERATE NE TO E  
WINDS ELSEWHERE WITH 2 TO 4 FT SEAS. FRESH TO STRONG NORTHERLY  
WINDS WILL FOLLOW A COLD FRONT CURRENTLY OVER CENTRAL TEXAS THAT  
WILL MOVE INTO THE NW GULF TONIGHT. THE RIDGE BEHIND THE FRONT  
IS NOT ESPECIALLY STRONG AND WILL STAY MOSTLY STATIONARY OVER THE  
SOUTHERN PLAINS THROUGH THU. THIS WILL CAUSE THE FRONT TO BE  
WEAK AND MAKE ONLY SLOW PROGRESS THROUGH THE NORTHERN GULF,  
REACHING FROM NEAR TAMPA FLORIDA TO 25N96W TO VERACRUZ MEXICO BY  
LATE THU. PULSES OF STRONG WINDS WILL FUNNEL BETWEEN THE FRONT  
AND THE COAST OF MEXICO THROUGH LATE FRI. THE FRONT GENERALLY  
STALLS AND WEAKENS ACROSS THE SOUTHERN GULF LATE IN THE WEEK. A  
REINFORCING FRONT MOVING ACROSS THE EASTERN SEABOARD WILL BRING  
A NEW ROUND OF FRESH TO POSSIBLY STRONG NE WINDS OVER THE EASTERN  
GULF LATE FRI INTO SAT. SEAS WILL BE 5 FT OR LESS OVER MUCH OF  
THE EASTERN GULF SAT DUE TO LIMITED FETCH AND DURATION, WITH THE  
EXCEPTION OF THE STRAITS OF FLORIDA AND OFF WESTERN CUBA WHERE  
FRESH TO STRONG NE TO E WINDS WILL INTERACT WITH THE FLORIDA  
CURRENT TO BUILD SEAS TO AT LEAST 7 FT.  
 
...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN  
55W AND 64W...  
 
A SHARP UPPER TROUGH FROM EASTERN CUBA TO NICARAGUA WILL SUPPORT  
DEVELOPMENT OF BROAD LOW PRESSURE OVER THE SW CARIBBEAN THROUGH  
LATE WEEK. THIS WILL MAINTAIN MODERATE NE WINDS IN THE LEE OF  
CUBA, BUT GENERALLY GENTLE NE TO E WINDS ELSEWHERE W OF  
75W. MODERATE TO FRESH E TO SE WINDS WILL PERSIST INTO LATE IN  
THE WEEK BETWEEN THE LOW PRESSURE AND RIDGING N OF THE AREA, WITH  
SUSTAINED 20 KT WINDS AND SEAS APPROACHING SIX FEET OFF HAITI BY  
LATE WED. THE RIDGE WILL WEAKEN STARTING FRI AS A COLD FRONT  
MOVES INTO THE WESTERN ATLANTIC, ALLOWING WINDS TO DIMINISH  
E OF 75W. WINDS AND SEAS WILL INCREASE OVER THE NW CARIBBEAN  
ESPECIALLY THE NEAR THE YUCATAN CHANNEL FRI NIGHT AS WINDS SURGE  
ACROSS WESTERN AND CENTRAL CUBA.  
   
..SW N ATLANTIC INCLUDING THE BAHAMAS
 
 
A SHARP UPPER TROUGH THROUGH THE CENTRAL BAHAMAS AND WESTERN  
CUBA AND AN ASSOCIATED SURFACE TROUGH FROM HAITI TO THE SOUTHERN  
BAHAMAS ARE SUPPORTING SCATTERED SHOWERS AND THUNDERSTORMS NORTH  
OF HISPANIOLA. OUTFLOWS FROM THIS CONVECTION IS CAUSING A PULSE  
OF STRONG EASTERLY WINDS BETWEEN THE COAST OF HISPANIOLA AND THE  
TURKS/CAICOS ISLANDS. LIGHT BREEZES ARE NOTED ELSEWHERE N OF 22N  
UNDER THE DOMINANCE OF A RIDGE ALONG 28N. LITTLE CHANGE IS  
EXPECTED THROUGH WED. THE SURFACE TROUGH WILL AMPLIFY THROUGH  
THU AS THE RIDGE SHIFTS EAST, AHEAD OF A COLD FRONT MOVING OFF  
THE NE FLORIDA COAST LATE THU. MODERATE TO FRESH NORTHERLY FLOW  
WILL FOLLOW THE FRONT, AS IT MOVES TO A POSITION FROM 31N75W TO  
SOUTH FLORIDA BY EARLY FRI. A REINFORCING FRONT WILL OVERTAKE AND  
RE-ENERGIZE THE FRONTAL BOUNDARY LATE FRI, BRINGING FRESH TO  
STRONG NE WINDS AND SEAS TO AT LEAST 9 FT OFF NE FLORIDA FRI  
NIGHT. THE MERGED FRONT WILL REACH FROM BERMUDA TO THE STRAITS OF  
FLORIDA SAT, WITH FRESH TO STRONG NE WINDS OVER MOST OF THE AREA  
W OF THE FRONT.  
 

 
   
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 CHRISTENSEN. NATIONAL HURRICANE CENTER.  
 
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