000 AXNT20 KNHC 300548 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 105 AM EST SUN NOV 30 2014 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0545 UTC. ...THE ITCZ/THE MONSOON TROUGH... THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL ATLANTIC NEAR 8N13W TO 7N20W WHERE THE ITCZ BEGINS AND CONTINUES ALONG 8N36W TO 6N54W. SCATTERED MODERATE CONVECTION IS FROM 6N- 11N BETWEEN 14W-24W AND FROM 4N-9N BETWEEN 34W-49W. ...DISCUSSION... GULF OF MEXICO... AN UPPER-LEVEL RIDGE DOMINATES THE GULF OF MEXICO WITH A SURFACE RIDGE EXTENDING FROM A 1028 MB HIGH CENTERED OVER THE W ATLANTIC NEAR 33N75W. ANTICYCLONIC FLOW OF 10-15 KT PREVAILS ACROSS THE BASIN AND ISOLATED CONVECTION MOVING ACROSS THE FLORIDA STRAITS INTO THE SE GULF. OVER THE NEXT 24 HOURS...THE SURFACE RIDGE WILL PERSIST BEFORE SHIFTING EASTWARD AHEAD OF THE NEXT COLD FRONT THAT WILL MOVE THROUGH E TEXAS AND THEN STALL ALONG THE TEXAS COAST. CARIBBEAN SEA... A BROAD UPPER-LEVEL TROUGH EXTENDS FROM THE FLORIDA PENINSULA OVER THE W ATLANTIC SUPPORTING A FRONTAL SYSTEM ANALYZED AS A COLD FRONT IN THE W ATLC AND AS A WEAKENING STATIONARY FRONT ENTERING THE CARIBBEAN THROUGH THE WINDWARD PASSAGE NEAR 20N74W TO THE COAST OF HONDURAS NEAR 15N83W. ISOLATED CONVECTION IS WITHIN 50 NM OF EITHER SIDE OF THE FRONT. STRONG SUBSIDENCE WITH DRY STABLE AIR ALOFT COVERS THE E CARIBBEAN E OF THE FRONT SUPPORTING FAIR WEATHER. TRADE WINDS OF 10-15 KT ARE PREVAILING ACROSS THE BASIN. OVER THE NEXT 24 HOURS...EXPECT FOR THE FRONT TO CONTINUE WEAKENING UNTIL DISSIPATION. HIGH PRESSURE WILL BUILD N OF THE AREA SUPPORTING FRESH TO NEAR GALE FORCE WINDS OVER THE CENTRAL CARIBBEAN THROUGH THE WEEKEND. HISPANIOLA... A WEAKENING STATIONARY FRONT EXTENDS THROUGH THE WINDWARD PASSAGE WITH ISOLATED CONVECTION WITHIN 50 NM OF EITHER SIDE OF THE FRONT AFFECTING PORTIONS OF HAITI. THE REMAINDER OF THE ISLAND IS UNDER CLEAR SKIES. EXPECT FOR THIS FRONT TO DISSIPATE WITHIN THE NEXT 24 HOURS. SCATTERED CONVECTION IS POSSIBLE MAINLY OVER HAITI AND THE N PORTION OF THE DOMINICAN REPUBLIC THROUGH THE WEEKEND. ATLANTIC OCEAN... A 1028 MB SURFACE HIGH IS CENTERED ACROSS THE W ATLANTIC NEAR 33N75W SUPPORTING FAIR WEATHER N OF 24N W OF 61W. TO THE E... AN UPPER-LEVEL TROUGH COVERS THE W AND CENTRAL ATLANTIC SUPPORTING A COLD FRONT THAT EXTENDS FROM A 1028 MB LOW ENTERED NEAR 36N45W. THIS FRONT EXTENDS FROM THAT POINT TO 23N65W ENHANCING CONVECTION WITHIN 100 NM OF EITHER SIDE OF IT. A STATIONARY FRONT EXTENDS FROM 23N65W INTO THE CARIBBEAN. SCATTERED LIGHT TO MODERATE CONVECTION IS PRESENT ALONG THIS BOUNDARY. A SURFACE TROUGH IS LOCATED FROM 23N57W TO 19N66W ENHANCING CONVECTION ACROSS THE ATLANTIC WATERS N OF PUERTO RICO FROM 19N-21N BETWEEN 61W-66W. THE E ATLANTIC IS DOMINATED BY A SURFACE RIDGE ANCHORED BY A 1023 MB HIGH LOCATED AT ABOUT 180 NM SW OF THE AZORES. LOOKING AHEAD OVER THE NEXT 24 HOURS...EXPECT FOR THE COLD FRONT ACROSS THE W ATLANTIC TO SLOWLY DISSIPATE AND THE W ATLANTIC SURFACE RIDGE WILL EXPAND EASTWARD INTO THE CENTRAL ATLANTIC. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ ERA