023  
AXNT20 KNHC 072333  
TWDAT  
 
TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
633 PM EST TUE NOV 7 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  
2315 UTC.  
   
..SPECIAL FEATURES
 
 
TROPICAL STORM RINA IS CENTERED NEAR 33.8N 48.9W AT 07/2100 UTC,  
OR ABOUT 803 NM E OF BERMUDA, OR ABOUT 1140 NM SSE OF CAPE RACE  
NEWFOUNDLAND, MOVING N AT 16 KT. ESTIMATED MINIMUM CENTRAL  
PRESSURE IS 1006 MB. MAXIMUM SUSTAINED WIND SPEED IS 40 KT WITH  
GUSTS TO 50 KT. SCATTERED MODERATE CONVECTION IS FROM 34N-37N  
BETWEEN 46W-50W. SEE THE LATEST NHC FORECAST/ADVISORY UNDER  
AWIPS/WMO HEADERS MIATCMAT4/WTNT24 KNHC FOR MORE DETAILS.  
   
..ITCZ/MONSOON TROUGH
 
 
THE MONSOON TROUGH EXTENDS FROM W AFRICA NEAR 12N16W TO 09N25W.  
THE INTERTROPICAL CONVERGENCE ZONE AXIS CONTINUES FROM 09N25W TO  
09N32W TO 06N42W TO S AMERICA NEAR 07N59W. SCATTERED MODERATE  
CONVECTION IS FROM 08N-11N BETWEEN 20W-25W, AND FROM 04N-07N  
BETWEEN 44W-50W.  
   
..DISCUSSION
 
 
GULF OF MEXICO...  
 
A 1019 MB HIGH IS CENTERED OVER THE NORTH CENTRAL GULF OF MEXICO  
NEAR 28N90W. 5-10 KT ANTICYCLONIC WINDS ARE GOING AROUND THE HIGH  
WITH FAIR WEATHER. SCATTERED SHOWERS ARE, HOWEVER, OVER S FLORIDA  
AND THE STRAITS OF FLORIDA. IN THE UPPER LEVELS, A LARGE UPPER  
LEVEL HIGH IS CENTERED OVER THE MEXICO NEAR 21N105W. STRONG  
SUBSIDENCE IS OVER THE GULF OF MEXICO S OF 27N. EXPECT A COLD  
FRONT TO EMERGE OFF THE TEXAS AND LOUISIANA COASTS WED MORNING  
WITH SHOWERS. FRESH TO STRONG NNE WINDS WILL LIE WEST OF THE  
FRONT AS IT CONTINUES TO MOVE ESE ACROSS THE GULF AND THE CENTRAL  
FLORIDA PENINSULA THROUGH THU NIGHT.  
 
CARIBBEAN SEA...  
 
A SURFACE TROUGH IS OVER THE NW CARIBBEAN FROM 21N86W TO THE GULF  
OF HONDURAS NEAR 16N88W. SCATTERED SHOWERS ARE OVER THE GULF OF  
HONDURAS, HONDURAS, GUATEMALA, AND BELIZE. FURTHER S, THE EASTERN  
EXTENT OF THE E PACIFIC MONSOON TROUGH IS OVER THE SW CARIBBEAN  
ALONG 09N BETWEEN COSTA RICA AND N COLOMBIA. SCATTERED SHOWERS ARE  
OVER COSTA RICA AND PANAMA. 10-15 KT TRADEWINDS ARE OVER THE  
REMAINDER OF THE CARIBBEAN. IN THE UPPER LEVELS, AN UPPER LEVEL  
LOW IS OVER E CUBA NEAR 20N76W. UPPER LEVEL DIFFLUENCE E OF THE  
LOW IS PRODUCING SCATTERED SHOWERS OVER THE E CARIBBEAN E OF 74W  
TO INCLUDE HISPANIOLA, PUERTO RICO, AND THE VIRGIN ISLANDS.  
EXPECT MORE SHOWERS OVER THE SW CARIBBEAN, AND THE E CARIBBEAN  
OVER THE NEXT 48 HOURS.  
   
..HISPANIOLA
 
 
A SURFACE TROUGH EXTENDS FROM THE N BAHAMAS TO SW HAITI. IN  
ADDITION UPPER LEVEL DIFFLUENCE IS OVER THE ISLAND. SCATTERED  
MODERATE CONVECTION IS OVER HAITI. SCATTERED SHOWERS ARE OVER THE  
DOMINICAN REPUBLIC. EXPECT SHOWERS AND THUNDERSTORMS OVER THE  
ISLAND FOR THE NEXT 48 HOURS.  
 
ATLANTIC OCEAN...  
 
SEE THE SPECIAL FEATURES SECTION FOR MORE INFORMATION ON TROPICAL  
STORM RINA. IN THE W ATLANTIC, A SURFACE TROUGH EXTENDS FROM  
27N74W TO SW HAITI NEAR 18N74W. ISOLATED MODERATE CONVECTION IS  
FROM 20N-24N BETWEEN 68W-75W. A 1018 MB HIGH IS OVER THE W  
ATLANTIC NEAR 31N67W. ANOTHER SURFACE TROUGH IS OVER THE TROPICAL  
ATLANTIC FROM 20N39W TO 15N42W. SCATTERED MODERATE CONVECTION IS  
FROM 17N-20N BETWEEN 37W-40W. OF NOTE IN THE UPPER LEVELS, THE  
UPPER LEVEL LOW CENTERED OVER E CUBA IS PRODUCING DIFFLUENT FLOW  
AS FAR E AS 60W. SCATTERED MODERATE CONVECTION IS N OF THE LEEWARD  
ISLANDS FROM 19N-24N BETWEEN 60W-64W. ANOTHER UPPER LEVEL LOW IS  
CENTERED OVER THE E ATLANTIC NEAR 22N41W ENHANCING CONVECTION. A  
THIRD UPPER LEVEL LOW IS CENTERED OVER THE CANARY ISLANDS NEAR  
30N16W PRODUCING SCATTERED SHOWERS FROM 28N-32N BETWEEN 10W-18W.  
EXPECT THE COLD FRONT PRESENTLY OVER CENTRAL TEXAS TO REACH THE W  
ATLANTIC ON THU EVENING. ALSO EXPECT THE E CUBA UPPER LEVEL LOW TO  
DRIFT TO THE S BAHAMAS OVER THE NEXT 24 HOURS, WITH CONTINUED  
SHOWERS AND THUNDERSTORMS N OF THE LEEWARD ISLANDS.  
 
FOR ADDITIONAL INFORMATION PLEASE VISIT  
HTTP://WWW.HURRICANES.GOV/MARINE  
 

 
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