000 AXNT20 KNHC 171217 CCA TWDAT TROPICAL WEATHER DISCUSSION...CORRECTED NWS NATIONAL HURRICANE CENTER MIAMI FL 705 AM EST SUN NOV 17 2013 ...CORRECTION TO SPECIAL FEATURES SECTION... 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1045 UTC. ...SPECIAL FEATURE... A GALE WARNING IS IN EFFECT FOR THE CENTRAL ATLANTIC N OF 28N BETWEEN 50W-55W ASSOCIATED WITH A STATIONARY FRONT EXTENDING FROM THE CENTRAL ATLANTIC AT 31N46W TO A 1006 MB LOW AT 25N53W TO 20N54W TO 17N57W. GALE FORCE WINDS ARE FORECAST TO PERSIST THROUGHOUT THE NEXT 48 HOURS. ENVIRONMENTAL CONDITIONS COULD BECOME CONDUCIVE FOR THIS LOW TO ACQUIRE SUBTROPICAL OR TROPICAL CHARACTERISTICS DURING THE NEXT FEW DAYS WHILE IT MOVES SLOWLY NORTHWARD TO NORTHWESTWARD. THIS SYSTEM HAS A MEDIUM CHANCE OF BECOMING A SUBTROPICAL OR TROPICAL CYCLONE DURING THE NEXT 48 HOURS. SEE LATEST HIGH SEAS FORECAST UNDER AWIPS/WMO HEADERS HSFAT2/FZNT02 KNHC FOR MORE DETAILS. ...ITCZ/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE TROPICAL ATLC NEAR 10N13W AND CONTINUES TO 6N20W WHERE THE ITCZ BEGINS AND CONTINUES ALONG 7N30W 6N50W. ISOLATED MODERATE CONVECTION IS FROM 4N-10N BETWEEN 10W-39W. ...DISCUSSION... GULF OF MEXICO... SURFACE RIDGING IS PRODUCING 10-15 KT SE TO S WINDS OVER THE ENTIRE GULF OF MEXICO. RADAR IMAGERY SHOWS SCATTERED SHOWERS OVER THE NE GULF AND N FLORIDA N OF 27N E OF 85W. FAIR WEATHER IS OVER THE REMAINDER OF THE GULF. IN THE UPPER LEVELS...A LARGE UPPER LEVEL HIGH IS CENTERED OVER THE YUCATAN CHANNEL PRODUCING SW TO W UPPER LEVEL WINDS OVER THE GULF OF MEXICO. CONSIDERABLE UPPER LEVEL MOISTURE IS OVER SE TEXAS AND THE N GULF STATES. EXPECT IN 24 HOURS FOR A COLD FRONT TO BE INLAND OVER THE N GULF STATES WITH PREFRONTAL CONVECTION OVER THE N GULF N OF 28N. ALSO EXPECT SOME SHOWERS OVER THE BAY OF CAMPECHE. CARIBBEAN SEA... 10-20 KT TRADEWINDS ARE OVER THE CARIBBEAN SEA WITH STRONGEST WINDS ALONG THE COAST OF N COLOMBIA. A 1006 MB LOW IS CENTERED INLAND OVER N COLOMBIA NEAR 8N75W. A MONSOON TROUGH EXTENDS W FROM THE LOW TO NW COSTA RICA AT 10N86W. ISOLATED MODERATE CONVECTION IS WITHIN 120 NM OF THE TROUGH AXIS. ELSEWHERE... RESIDUAL LOW CLOUDINESS AND SCATTERED SHOWERS FROM AN OLD SHEAR LINE ARE OVER THE NE CARIBBEAN FROM 17N60W TO PUERTO RICO TO HISPANIOLA. IN THE UPPER LEVELS....A LARGE UPPER LEVEL HIGH IS CENTERED OVER THE YUCATAN CHANNEL PRODUCING ANTICYCLONIC UPPER LEVEL WINDS OVER THE ENTIRE CARIBBEAN SEA AND CENTRAL AMERICA. CONSIDERABLE UPPER LEVEL MOISTURE IS OVER THE NE CARIBBEAN N OF 15N W OF 70W. STRONG SUBSIDENCE IS OVER THE REMAINDER OF THE CARIBBEAN SUPPRESSING THUNDERSTORM BUILDUPS. EXPECT OVER THE NEXT 24 HOURS FOR CONVECTION TO PERSIST NEAR THE MONSOON TROUGH...AND FOR SHOWERS TO MOVE S FROM THE NE CARIBBEAN. ...HISPANIOLA... CURRENTLY SCATTERED SHOWERS ARE OVER HISPANIOLA MOVING S. WATER VAPOR IMAGERY INDICATES DRY STABLE AIR ALOFT ACROSS THE ISLAND THAT SHOULD PREVENT THUNDERSTORMS FROM BUILDING. LIGHT SHOWERS ARE EXPECTED TO MOVE OVER THE ISLAND FOR THE NEXT 24 HOURS. ATLANTIC OCEAN... A 1029 MB HIGH IS CENTERED OVER THE W ATLANTIC NEAR 38N61W. ISOLATED MODERATE CONVECTION IS WITHIN 180 NM OF THE FRONT. A STATIONARY FRONT EXTENDS FROM THE CENTRAL ATLANTIC AT 31N46W TO A 1006 MB LOW AT 25N53W TO 20N54W TO 17N57W. A GALE IS W OF THE FRONT. SEE SPECIAL FEATURES ABOVE. A 1033 MB HIGH IS CENTERED OVER THE E ATLANTIC NEAR 43N23W. A RIDGE AXIS EXTENDS SW TO 20N30W. IN THE TROPICS... A SURFACE TROUGH IS E OF THE LESSER ANTILLES FROM 14N59W TO 9N59W. SCATTERED SHOWERS ARE WITHIN 90 NM OF THE TROUGH. IN THE UPPER LEVELS...AN UPPER LEVEL LOW IS CENTERED NEAR 21N53W ENHANCING CONVECTION. EXPECT IN 24 HOURS FOR THE SURFACE LOW TO MOVE N TO 29N53W...AND DEEPEN WITH CONVECTION. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORMOSA