242  
AGXX40 KNHC 061949  
MIMATS  
 
MARINE WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
249 PM EST MON NOV 6 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 BREEZES AND SLIGHT SEAS WILL PERSIST OVER THE NE GULF THE  
NEXT FEW DAYS NEAR THE CENTER OF HIGH PRESSURE. MAINLY GENTLE TO  
MODERATE WINDS AND 2 TO 4 FT SEAS WILL PERSIST ELSEWHERE, EXCEPT  
FOR 4-5 FT SEAS IN THE NW GULF. SE RETURN FLOW WILL INCREASE BRIEFLY  
TODAY OVER THE NW GULF AHEAD OF LOWER PRESSURE FORMING OVER TEXAS.  
FRESH NORTHERLY FLOW AND SEAS BUILDING TO 6 FT WILL FOLLOW A COLD  
FRONT MOVING OFF THE TEXAS COAST ON WEDNESDAY, REACHING A POSITION  
FROM THE FLORIDA BIG BEND AREA TO NE MEXICO ON THURSDAY, BEFORE STALLING  
AND WEAKENING FROM SW FLORIDA TO NEAR TAMPICO MEXICO THROUGH FRI. AS  
STRONG HIGH PRESSURE BUILDS SOUTHWARD OVER THE E GULF, AND OVER  
THE EASTERN PORTION OF THE CENTRAL GULF. SCATTERED SHOWERS ARE  
POSSIBLE AHEAD OF THE FRONT. FRESH NE WINDS WILL PERSIST OVER  
THE NORTHERN GULF THROUGH FRI. THESE WINDS THEN BECOME FRESH TO  
LOCALLY STRONG FRI. NIGHT THROUGH SAT. NIGHT IN RESPONSE TO THE  
BUILDING STRONG HIGH PRESSURE.  
 
...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN  
55W AND 64W...  
 
HIGH PRESSURE BUILDING TO THE NORTH WILL MAINTAIN MODERATE  
TRADES FROM THE TROPICAL N ATLANTIC INTO THE CENTRAL CARIBBEAN  
THROUGH MID WEEK, WITH LOCAL AND BRIEF PULSES TO 20 KT ALONG THE  
SOUTH AMERICAN COAST AT NIGHT, AND POSSIBLY IN THE LEE OF CUBA  
TUE THROUGH SAT. GLOBAL MODELS SUGGEST THAT WEAK LOW MAY EMERGE  
OFF THE COAST OF COLOMBIA TUESDAY NIGHT, AND MOVE NW THROUGH FRI.  
BEFORE MOVING IN A SW DIRECTION FRI. NIGHT THROUGH SAT. NIGHT AS  
HIGH PRESSURE FROM THE GULF OF MEXICO SURGES SOUTHWARD ACROSS  
THE NW CARIBBEAN SEA AND CUBA.,  
   
..SW N ATLANTIC INCLUDING THE BAHAMAS
 
 
A WEAK TROUGH OFF THE EAST COAST OF FLORIDA AND THROUGH THE  
NORTHERN BAHAMAS WILL DISSIPATE THROUGH MID WEEK. HIGH PRESSURE  
OVER THE CENTRAL ATLANTIC WILL BUILD WESTWARD THROUGH MID WEEK  
ALONG ROUGHLY 28N, SUPPORTING MODERATE TRADES S OF 22N, PULSING  
TO 20 KT OFF THE NORTH COAST OF HISPANIOLA TONIGHT AND MON  
NIGHT. OTHERWISE MODEST WINDS AND SEAS WILL PERSIST THROUGH  
ABOUT WED. TO THE N OF 22N. MODELS AGREE ON SHOWING A RATHER  
WEAK COLD FRONT THAT SLOWLY MOVES SOUTHEASTWARD OVER THE  
SOUTHEASTERN UNITED STATES ON WEDNESDAY, AND INTO THE FAR NW  
PORTION OF THE AREA EARLY ON THU. MODELS DISAGREE TO SOME EXTENT  
WITH TIMING IN THE EASTWARD MOTION OF THE FRONT THEREAFTER. BY  
THU. NIGHT, THE FRONT IS EXPECTED TO BE NEAR A POSITION FROM NEAR  
31N72W TO NEAR DAYTONA BEACH FLORIDA, REACH FROM NEAR 31N68W TO  
NEAR 28N75W AND STATIONARY TO NEAR CAPE CANAVERAL BY EARLY FRI.  
AFTERNOON, AND AS A WEAKENING COLD FRONT FROM NEAR 30N65W AND  
STATIONARY TO NEAR 27N72W, AND DISSIPATING STATIONARY TO VICINITY  
OF CAPE CANAVERAL ON SATURDAY AS STRONG HIGH PRESSURE RIDGING  
THAT BUILDS BEHIND THE FRONT WILL TEND TO BRIDGE ACROSS THE  
STATIONARY FRONTAL PORTION WITH THE RELATED PRESSURE GRADIENT TO  
INDUCE FRESH TO STRONG NE TO E WINDS THAT WILL PRESS SOUTHWARD  
OVER JUST ABOUT THE ENTIRE BASIN INTO SUNDAY. SEAS WILL  
SIGNIFICANTLY BUILD ON DAYS 4 AND 5 OVER THE WATERS N AND NE OF  
THE BAHAMAS. THIS IS INDICATED IN THE LATEST TAFB GRIDDED  
FORECAST. EXPECT PRETTY ROUGH MARINE CONDITIONS OVER THOSE  
WATERS.  
 

 
   
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 AGUIRRE. NATIONAL HURRICANE CENTER.  
 
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