000 AXNT20 KNHC 100546 TWDAT TROPICAL WEATHER DISCUSSION...CORRECTION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 105 AM EST FRI DEC 10 2010 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...METEOROLOGICAL ANALYSIS...WEATHER OBSERVATIONS...AND RADAR. BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0500 UTC. ...ITCZ... THE ITCZ AXIS IS CENTERED FROM GUINEA NEAR 11N15W ALONG 7N22W 5N33W EQ44W. ISOLATED MODERATE/STRONG CONVECTION IS WITHIN 175 NM N OF THE AXIS BETWEEN 18W-30W. SCATTERED MODERATE/STRONG CONVECTION IS ALSO OFF THE COAST OF LIBERIA FROM 3N-7N BETWEEN 7W-12W. ...DISCUSSION... GULF OF MEXICO... THE GULF OF MEXICO REMAINS UNDER MOSTLY FAIR CONDITIONS TONIGHT AS HIGH PRESSURE BUILDS IN THE WAKE OF THE LOW PRESSURE SYSTEM THAT HAS NOW MOVED INTO THE NW CARIBBEAN. WATER VAPOR IMAGERY INDICATES THAT THE SHORTWAVE UPPER TROUGH SUPPORTING THE LOW PRESSURE SYSTEM HAS ALSO MOVED E NOW EXTENDING DOWN THE FLORIDA PENINSULA AND INTO THE NW CARIBBEAN WITH MAINLY NWLY FLOW ALOFT COVERING THE REMAINDER OF THE BASIN. MOSTLY DRY AIR ALOFT SPREADS ACROSS THE GULF WITH SOME MODERATE MOISTURE MAKING ITS WAY ACROSS THE NRN GULF COAST. PATCHES OF STRATOCUMULUS CLOUDS ARE IN THE SW GULF AS WELL AS THE SE PORTION. POSSIBLE ISOLATED SHOWERS ARE ALSO IN THE SE GULF JUST N OF WRN CUBA. ANTI-CYCLONIC SURFACE FLOW IS AROUND THE BUILDING RIDGE WITH THE STRONGEST WINDS OF 15-20 KT OFF THE SW COAST OF FLORIDA AND ALONG THE TEXAS COASTLINE. EXPECT SURFACE RIDGING TO REMAIN ACROSS THE GULF MAINTAINING FAIR CONDITIONS BEFORE THE NEXT COLD FRONT PUSHES INTO THE AREA LATE SUNDAY. CARIBBEAN SEA... A SHORTWAVE UPPER LEVEL TROUGH EXTENDS FROM THE FLORIDA PENINSULA INTO THE NW CARIBBEAN SUPPORTING A WEAKENING 1015 MB LOW S OF THE ISLE OF YOUTH NEAR 20N82W. AS OF 1500 UTC...A DISSIPATING COLD FRONT EXTENDS FROM THE LOW CENTER TO THE HONDURAS/NICARAGUA BORDER NEAR 15N84W. PATCHES OF LOW CLOUDS ARE NOTED BEHIND THIS BOUNDARY WITH POSSIBLE ISOLATED SHOWERS. DRY AND CLEAR CONDITIONS ARE WITHIN 200 NM SE OF THE FRONT UNTIL REACHING AN AREA OF ENHANCED MOISTURE THAT SPREADS FROM THE SW CARIBBEAN ACROSS ERN CUBA ASSOCIATED WITH A STRONG UPPER LEVEL JET SANDWICHED BETWEEN THE UPPER LEVEL TROUGH ACROSS THE NW CARIBBEAN AND UPPER LEVEL RIDGING COVERING THE REMAINDER OF THE BASIN CENTERED OVER NE SOUTH AMERICA. A SHEAR LINE EXTENDS UNDERNEATH THE JET DEPICTING CONVERGING TRADE WIND FLOW RANGING FROM THE MONA PASSAGE NEAR 18N68W ALONG 15N75W TO A 1008 MB LOW OVER PANAMA NEAR 9N78W. THE COMBINATION OF SURFACE CONVERGENCE AND UPPER LEVEL DIFFLUENCE IS ENHANCING WIDESPREAD SHOWERS/THUNDERSTORMS BETWEEN 73W-80W S OF 16W...AND ACROSS PORTIONS OF ERN CUBA...HISPANIOLA...AND PUERTO RICO BETWEEN 66W-77W N OF 16W. STRONG SHOWERS/THUNDERSTORMS ARE ALSO ACROSS NRN COLOMBIA. THE FAR ERN CARIBBEAN IS UNDER FAIR CONDITIONS WITH A FEW ISOLATED SHOWERS EMBEDDED IN THE ELY TRADEWIND FLOW S OF 12N E OF 66W. EXPECT SHOWER/THUNDERSTORM ACTIVITY TO CONTINUE ACROSS THE CENTRAL PORTIONS OF THE CARIBBEAN OVER THE NEXT 24 HOURS. ATLANTIC OCEAN... AN UPPER LEVEL SHORTWAVE TROUGH EXTENDING DOWN THE FLORIDA PENINSULA SUPPORTS A DISSIPATING STATIONARY FRONT ALONG 31N70W 30N79W 28N80W. WIDESPREAD SHOWERS/ISOLATED THUNDERSTORMS ARE N OF 27N BETWEEN 71W-80W. FARTHER E...THE UPPER LEVEL JET NOTED ACROSS THE CARIBBEAN EXTENDS FROM HISPANIOLA NE TO NEAR 32N60W CARRYING HIGH MOISTURE LEVELS FROM THE CENTRAL CARIBBEAN AND SUPPORTING NUMEROUS SHOWERS/POSSIBLE THUNDERSTORMS N OF 22N BETWEEN 60W-70W. SOME OF THIS SHOWER ACTIVITY IS CONTRIBUTED TO SURFACE CONVERGENCE NEAR A STATIONARY FRONT THAT ENTERS THE DISCUSSION AREA NEAR 32N54W TO 27N66W AND CONTINUES AS A SURFACE TROUGH TO NRN HAITI NEAR 20N72W. AN UPPER LEVEL RIDGE COVERS THE CENTRAL ATLC EXTENDING FROM NE SOUTH AMERICA TO NEAR 43N44W SUPPORTING A SURFACE RIDGE BETWEEN 28W-50W MAINTAINING FAIR CONDITIONS. AN OCCLUDED LOW CONTINUES TO SPIN E OF THE AZORES ISLANDS WITH THE UPPER LEVEL LOW CENTERED NEAR 36N24W...AND THE 1000 MB SURFACE LOW NEAR 36N19W. THERE IS LITTLE SHOWER ACTIVITY ASSOCIATED WITH THIS SYSTEM WITH ONLY A FEW POSSIBLE ISOLATED SHOWERS N OF 28N BETWEEN 17W-26W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ WALTON