081  
AXNT20 KNHC 032336  
TWDAT  
 
TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
736 PM EDT FRI NOV 3 2017  
 
TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA, CENTRAL AMERICA  
GULF OF MEXICO, CARIBBEAN SEA, NORTHERN SECTIONS OF SOUTH  
AMERICA, AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE  
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE  
IMAGERY, WEATHER OBSERVATIONS, RADAR AND METEOROLOGICAL ANALYSIS.  
 
BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH  
2330 UTC.  
   
.ITCZ/MONSOON TROUGH
 
 
THE MONSOON TROUGH EXTENDS FROM THE AFRICAN COAST NEAR 10N14W TO  
08N17W. THE INTERTROPICAL CONVERGENCE ZONE EXTENDS FROM 08N17W TO  
09N40W, THEN CONTINUES WEST OF A SURFACE TROUGH AT 09N43W TO  
10N48W. ANOTHER SURFACE TROUGH EXTENDS SOUTH OF ITCZ FROM 05N12W  
TO 03N29W. CLUSTERS OF SCATTERED MODERATE CONVECTION ARE FROM  
02N-10N AND WEST OF 31W.  
   
..DISCUSSION
 
 
GULF OF MEXICO...  
 
A 1022 MB HIGH IS CENTERED OVER SOUTHERN ALABAMA NEAR 32N85W,  
EXTENDING ITS RIDGE ACROSS THE NORTHEAST GULF WATERS. TO THE  
WEST, A SURFACE TROUGH EXTENDS ACROSS THE BAY OF CAMPECHE WITH  
ISOLATED SHOWERS. SCATTEROMETER DATA DEPICTS GENTLE TO MODERATE  
ANTICYCLONIC WINDS ACROSS THE BASIN. EXPECT SURFACE RETURN FLOW TO  
PERSIST OVER THE GULF FOR THE NEXT SEVERAL DAYS.  
 
CARIBBEAN SEA...  
 
A LINE OF SURFACE CONFLUENCE EXTENDS FROM EASTERN CUBA AND THE  
WINDWARD PASSAGE TO NORTHERN NICARAGUA. IN THIS AREA, SCATTERED  
MODERATE CONVECTION ARE NOTED NORTH OF 15N BETWEEN 74W-84W.  
FURTHER SOUTH, A SURFACE TROUGH IS NEAR THE COASTS OF NICARAGUA  
AND COSTA RICA FROM 14N82W TO 11N82W WITH NO SIGNIFICANT  
CONVECTION. STRONG SUBSIDENCE PREVAILS OVER THE EAST AND SOUTHERN  
PORTIONS OF THE BASIN. A SURFACE TROUGH WILL ENTER THE EASTERN  
CARIBBEAN DURING THE NEXT 24 HOURS ENHANCING CONVECTION MOSTLY  
AROUND THE WINDWARD ISLANDS AND ADJACENT WATERS.  
   
..HISPANIOLA
 
 
SCATTERED SHOWERS PREVAIL ACROSS THE WINDWARD PASSAGE AFFECTING  
THE WESTERN PORTION OF THE ISLAND WHILE FAIR WEATHER DOMINATES THE  
REMAINDER OF THE ISLAND. A SIMILAR SCENARIO IS EXPECTED THROUGH  
THE NEXT 24 HOURS.  
 
ATLANTIC OCEAN...  
 
A SURFACE TROUGH IS OVER THE WEST ATLANTIC FROM 32N74W TO 24N74W.  
SCATTERED SHOWERS ARE WITHIN 90 NM EAST OF THE TROUGH MAINLY NORTH  
OF 29N. FURTHER EAST, A 1014 MB LOW IS CENTERED OVER THE CENTRAL  
ATLANTIC NEAR 27N56W. A SURFACE TROUGH EXTENDS FROM 23N59W TO THE  
LOW TO 31N53W. AN AREA OF SCATTERED MODERATE CONVECTION PREVAILS  
WITHIN 200 NM TO THE EAST OF THE TROUGH/LOW MAINLY NORTH OF 22N.  
ANOTHER SURFACE TROUGH IS EAST OF THE LESSER ANTILLES, EXTENDING  
FROM 22N55W TO 10N60W. SCATTERED SHOWERS ARE NOTED SOUTH OF 14N  
BETWEEN 57W-61W. EXPECT FOR THE TROUGHS ACROSS THE BASIN TO MOVE  
WEST THROUGH THE NEXT 24 HOURS ENHANCING CONVECTION.  
 
FOR ADDITIONAL INFORMATION PLEASE VISIT  
HTTP://WWW.HURRICANES.GOV/MARINE  
 

 
 
ERA  
 
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