000 AXNT20 KNHC 131050 CCA TWDAT TROPICAL WEATHER DISCUSSION...CORRECTION NWS NATIONAL HURRICANE CENTER MIAMI FL 805 AM EDT SUN APR 13 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. CORRECTED FOR ISSUANCE TIME BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1030 UTC. ...ITCZ/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM THE AFRICAN COAST NEAR 07N12W TO 03N14W TO 0N19W. THE INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 0N19W TO 0S32W TO THE COAST OF N BRAZIL NEAR 02S43W. SCATTERED MODERATE CONVECTION AND TSTMS ARE LOCATED FROM 01N-03N BETWEEN 07W-13W AND FROM 04S-04N BETWEEN 19W-37W. ...DISCUSSION... GULF OF MEXICO... A BROAD RIDGE COVERING THE CENTRAL AND WESTERN ATLC WATERS EXTENDS INLAND ACROSS THE MID-ATLC STATES AS WELL INTO THE GULF WATERS. SURFACE RIDGING IS PROVIDING TO THE BASIN WITH E-SE WIND FLOW RANGING FROM 10-20 KT WHICH IS EXPECTED TO PERSIST THROUGH MON MORNING. ALOFT...WESTERLY-NORTHWESTERLY FLOW MOVES ACROSS THE BASIN. THE FLOW ALOFT IS ADVECTING MOISTURE FROM THE E PACIFIC OCEAN TO THE NW GULF TO SUPPORT MIDDLE TO UPPER LEVEL CLOUDS N OF 27N W OF 92W. LOW LEVEL MOISTURE ADVECTION FROM THE NW CARIBBEAN INTO THE WESTERN GULF SUPPORTS HAZE AND DENSE FOG N OF 27N W OF 90W. ELSEWHERE...DRY AIR SUBSIDENCE SUPPORTS CLEAR SKIES AND FAIR WEATHER. THE NEXT COLD FRONT IS FORECAST TO ENTER THE NW BASIN MON EVENING. STRONG PRESSURE GRADIENT BUILDING BEHIND THE FRONT WILL SUPPORT GALE FORCE WINDS OVER THE WESTERN GULF STARTING MON NIGHT. CARIBBEAN SEA... SOUTHWESTERLY FLOW ALOFT ASSOCIATED WITH A RIDGE OVER THE SOUTH E PACIFIC IS ADVECTING MOISTURE INTO THE NW CARIBBEAN AND PORTIONS OF THE SW N ATLC WATERS. HIGH MOISTURE IS ALSO PRESENT AT THE LOWER LEVELS ASSOCIATED WITH A FORMER STATIONARY FRONT THAT DISSIPATED EARLIER THIS MORNING. WITH NO LIFTING MECHANISMS...DEEP LAYER MOISTURE OVER THE NW CARIBBEAN WATERS MAY JUST ENHANCE ISOLATED SHOWERS. EXCEPT FOR THE SW BASIN S OF 12N BETWEEN 73W-81W WHERE ISOLATED SHOWERS ARE OCCURRING ASSOCIATED WITH LOW PRESSURE OVER COLOMBIA...THE REMAINDER BASIN IS BEING INFLUENCED BY A MIDDLE TO UPPER LEVEL RIDGE AND STRONG SUBSIDENCE THAT SUPPORT FAIR WEATHER. TRADES OF 15 KT DOMINATE ACROSS THE BASIN...EXCEPT FOR THE CENTRAL CARIBBEAN BETWEEN 65W- 79W WHERE WINDS RANGE FROM 20-25 KT. NO SURFACE FEATURES ARE EXPECTED TO AFFECT THE REGION WITHIN THE NEXT THREE DAYS. OTHERWISE...MOISTURE ASSOCIATED WITH THE FORMER STATIONARY FRONT WILL LINGER OVER THE NW CARIBBEAN WATERS THROUGH SUNDAY NIGHT LIKELY ENHANCING ISOLATED SHOWERS. ...HISPANIOLA... CURRENTLY MOSTLY FAIR WEATHER ACROSS THE ISLAND WITH ISOLATED SHOWERS HAPPENING OVER SW HAITI AND THE WINDWARD PASSAGE. THIS SHOWERS ARE BEING ENHANCED BY LOW LEVEL MOISTURE BEING ADVECTED INTO THE NW CARIBBEAN SEA FROM THE SW N ATLC WATERS AS WELL AS BY UPPER LEVEL DIFFLUENCE. EXCEPT FOR THE NORMAL AFTERNOON SHOWERS...FAIR WEATHER IS EXPECTED THROUGH SUN NIGHT. ATLANTIC OCEAN... A BROAD SURFACE RIDGE COVERS THE CENTRAL AND WESTERN ATLC PROVIDING NE-E FLOW RANGING FROM 10-15 KT. A WEAKNESS IN THE RIDGE SUPPORT A 1018 MB LOW NEAR 30N51W WITH AN ASSOCIATED TROUGH EXTENDING TO 28N50W. THIS LOW IS EXPECTED TO DISSIPATE LATER TONIGHT. A WEAK SURFACE TROUGH IS SW OF THE LOW ALONG 27N59W TO 23N60W. MIDDLE LEVEL DIFFLUENCE SUPPORTS SCATTERED SHOWERS NEARBY THE TROUGH N OF 24N BETWEEN 55W-66W AND N OF 25N BETWEEN 68W-74W. OVER THE EASTERN BASIN...A MIDDLE TO UPPER LEVEL LOW SUPPORTS A 1009 MB SURFACE LOW NEAR 29N21W. SCATTERED SHOWERS AND TSTMS ARE NE OF THE LOW CENTER N OF 28N BETWEEN 18W- 21W. SURFACE RIDGING WILL DOMINATE ACROSS THE BASIN THROUGH TUE AFTERNOON. THEN ON TUE NIGHT A COLD FRONT MOVES FROM THE GULF INTO THE SW N ATLC AND ANOTHER COLD FRONT DIPS INTO THE AREA OF DISCUSSION IN THE CENTRAL ATLC. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ NR