633  
AXNT20 KNHC 081730  
TWDAT  
 
TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
1230 PM EST WED NOV 8 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH  
1715 UTC.  
   
..SPECIAL FEATURES
 
 
TROPICAL STORM RINA IS CENTERED NEAR 39.4N 48.7W AT 08/1500 UTC,  
OR ABOUT 478 NM SSE OF CAPE RACE NEWFOUNDLAND, MOVING NORTH AT 18  
KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 997 MB. MAXIMUM  
SUSTAINED WIND SPEED IS 50 KT WITH GUSTS TO 60 KT. SCATTERED  
MODERATE CONVECTION IS PRESENT NORTH OF 38N BETWEEN 43W-52W. SEE  
THE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS  
MIATCMAT4/WTNT24 KNHC FOR MORE DETAILS.  
   
..ITCZ/MONSOON TROUGH
 
 
THE MONSOON TROUGH EXTENDS FROM GUINEA ON THE COAST OF W AFRICA  
NEAR 09N13W TO 09N27W. THE INTERTROPICAL CONVERGENCE ZONE  
CONTINUES FROM 09N27W TO 05N40W TO 06N42W. SCATTERED MODERATE  
CONVECTION IS OCCURRING WITHIN 50 NM ON EITHER SIDE OF THE ITCZ.  
   
..DISCUSSION
 
 
GULF OF MEXICO...  
 
A COLD FRONT IS ENTERING THE NORTHWEST GULF, EXTENDING FROM 29N92W  
TO 26N97W. NO SIGNIFICANT CONVECTION IS RELATED TO THIS BOUNDARY  
AT THIS TIME. WEAK SURFACE RIDGING PREVAILS ACROSS THE REMAINDER  
OF THE BASIN WITH FAIR WEATHER. SCATTEROMETER DATA DEPICTS GENTLE  
TO MODERATE EASTERLY WINDS ACROSS THE AREA SOUTH OF THE FRONT  
WHILE NORTHERLY WINDS PREVAIL NORTH OF THE FRONT. EXPECT FOR THE  
FRONT TO STALL OVER THE NORTHWEST GULF. A SECONDARY PUSH WILL MAKE  
IT DRIFT SOUTH THROUGH THE WEEK WHILE DISSIPATING.  
 
CARIBBEAN SEA...  
 
A SURFACE TROUGH EXTENDS ACROSS THE CENTRAL CARIBBEAN WITH  
SCATTERED MODERATE CONVECTION BETWEEN 68W-77W, AFFECTING  
HISPANIOLA, PUERTO RICO, AND SURROUNDED WATERS. THIS TROUGH IS  
SUPPORTED BY AN UPPER-LEVEL LOW CENTERED OVER EAST CUBA. MODERATE  
TO FRESH SOUTHEAST WINDS ARE DEPICTED IN SCATTEROMETER DATA TO  
THE EAST OF THE TROUGH, WHILE GENTLE TO MODERATE NORTHEASTERLY  
WINDS PREVAIL WEST OF THE TROUGH. TO THE SOUTH, THE EPAC'S MONSOON  
TROUGH EXTENDS ALONG 10N BETWEEN 76W-83W ENHANCING SCATTERED  
SHOWERS IN THIS AREA. FAIR WEATHER PREVAILS ELSEWHERE. A SIMILAR  
WEATHER PATTERN IS EXPECTED THROUGH THE NEXT 24 HOURS.  
   
..HISPANIOLA
 
 
A SURFACE TROUGH EXTENDS ACROSS THE ISLAND ENHANCING SCATTERED  
MODERATE CONVECTION. THIS TROUGH IS SUPPORTED BY AN UPPER-LEVEL  
LOW CENTERED OVER EAST CUBA. EXPECT FOR THIS ACTIVITY TO CONTINUE  
DURING THE NEXT 48 HOURS.  
 
ATLANTIC OCEAN...  
 
SEE THE SPECIAL FEATURES SECTION ABOVE FOR MORE INFORMATION ON  
TROPICAL STORM RINA. IN THE W ATLANTIC, A SURFACE TROUGH EXTENDS  
FROM 28N77W TO 23N76W. ISOLATED SHOWERS ARE NOTED ALONG THE  
TROUGH. TO THE EAST, ANOTHER SURFACE TROUGH EXTENDS ACROSS  
SOUTHERN BAHAMAS ENHANCING CONVECTION SOUTH OF 24N BETWEEN 64W-  
72W. A 1018 MB SURFACE HIGH IS CENTERED NEAR 30N66W. SURFACE  
RIDGING PREVAILS ELSEWHERE, ANCHORED BY A 1040 MB HIGH CENTERED  
NEAR 45N25W. EXPECT FOR A COLD FRONT CURRENTLY OVER EASTERN USA  
TO REACH THE WEST ATLANTIC BY LATE THURSDAY ENHANCING CONVECTION.  
ALSO, EXPECT THE EASTERN CUBA UPPER-LEVEL LOW TO SLOWLY LIFT  
NORTHEAST OVER THE SOUTHERN BAHAMAS DURING THE NEXT 24 HOURS,  
SUPPORTING SHOWERS AND THUNDERSTORMS NORTH OF THE LEEWARD ISLANDS.  
 
FOR ADDITIONAL INFORMATION PLEASE VISIT  
HTTP://WWW.HURRICANES.GOV/MARINE  
 

 
 
ERA  
 
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