000 AGXX40 KNHC 071706 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 106 PM EDT THU AUG 7 2014 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W...AND THE SW N ATLANTIC INCLUDING THE BAHAMAS. ...GULF OF MEXICO... MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. NWPS USED FOR WAVE PARAMETERS. HIGH CONFIDENCE. HIGH PRES CENTER EXPECTED TO MEANDER OVER THE N-CENTRAL AND NE GULF WATERS THROUGH THE PERIOD WITH A RIDGE EXTENDING W TO THE NORTHERN TX COAST. THIS PATTERN WILL MAINTAIN 5-10 KT ANTICYCLONIC WINDS ACROSS THE GULF WATERS N OF 23N...EXPECT FOR 10-15 KT SE-S FLOW OVER THE FAR SW AND WESTERN WATERS AROUND THE W PERIPHERY OF THE RIDGE. S OF 23N...EXPECT THE EVENING ENHANCEMENT OF 15-20 KT NE WINDS ALONG THE W COAST OF THE YUCATAN PENINSULA WHICH WILL SET UP AN INVERTED TROUGH OVER THE EASTERN BAY OF CAMPECHE DURING THE LATE NIGHT HOURS. THE TROUGH WILL SHIFT W TO ACROSS THE CENTRAL BAY OF CAMPECHE DURING EACH MORNING AND LOSING IDENTITY DURING THE EARLY AFTERNOON HOURS. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. NWPS USED FOR WAVE PARAMETERS. MED CONFIDENCE. A TROPICAL WAVE OVER THE CENTRAL CARIBBEAN WILL CONTINUE W PASSING THROUGH THE WESTERN CARIBBEAN ON FRI AND SAT. SCT RW/ISOL TS ARE OBSERVED TO THE N OF 16N ALONG THE WAVE. THE SOUTHERN EXTENSION OF THE WAVE IS CONTRIBUTING TO SCT MOD/ISOL STRONG CONVECTION CURRENTLY MOVING OFF THE NW COAST OF COLOMBIA AND SPREADING W ACROSS THE NORTHERN APPROACH TO THE PANAMA CANAL TO ALONG 81W. A SECOND TROPICAL WAVE IS PASSING THROUGH THE TROPICAL ATLC WATERS TODAY ACCOMPANIED BY A LARGE AREA OF SCT RW/ISOL TS. THIS WAVE WILL PASS THROUGH THE EASTERN CARIBBEAN ON FRI AND SAT...THROUGH THE CENTRAL PORTION ON SUN...AND REACH THE WESTERN CARIBBEAN EARLY NEXT WEEK. A THIRD TROPICAL WAVE CURRENTLY ALONG 35W WILL REACH THE TROPICAL ATLC WATERS EARLY NEXT WEEK. FRESH EASTERLY TRADES WILL CONTINUE THROUGH SUN ACROSS THE CENTRAL CARIBBEAN WITH EMBEDDED PATCHES OF STRONG TRADES DEVELOPING DURING THE EVENING AND NIGHT HOURS. THE GRADIENT IS EXPECTED TO TIGHTEN ON SUN EVENING WITH THE AFFECTED AREA INCREASING IN OVERALL SIZE...ESPECIALLY OFF THE NW COAST OF COLOMBIA. ...SW N ATLANTIC INCLUDING THE BAHAMAS... MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. NWPS USED FOR WAVE PARAMETERS. MED CONFIDENCE. THE NORTHER SEGMENT OF A FRONTAL TROUGH EXTENDING FROM 31N67W TO THE FL STRAITS WILL CONTINUE MOVING E PASSING E OF 55W ON MON NIGHT. A RIDGE FROM 29N55W TO THE CAY SAL BANK WILL SHIFT S TO A PSN FROM 27N55W TO 26N65W TO 26N80W ON SAT. THE WESTERN EXTENT OF THE RIDGE WILL SHIFT N BEHIND THE TROUGH TO A PSN FROM 26N55W TO 26N65W TO 27N80W ON MON AND TUE. SW FLOW AT 15-20 KT E OF THE TROUGH WILL DIMINISH TO 10-15 KT ON FRI WITH LITTLE CHANGE THEN EXPECTED TILL AFTER THE TROUGH MOVES E OF 55W. N OF RIDGE AND W OF THE TROUGH EXPECTING THE SW-W 5-10 KT FLOW TO BACK TO MOSTLY S TO SW FLOW THROUGH LATE SAT...THEN THE GRADIENT WILL TIGHTEN SOME WITH SW 10-15 KT CONDITIONS N OF THE RIDGE W OF 65W ON SUN NIGHT AND MON. EASTERLY TRADES S OF THE RIDGE AXIS IS EXPECTED TO CONTINUE THROUGH FRI AT 10-15 KT WITH AN AREA OF EMBEDDED 15- 20 KT CONDITIONS N OF HISPANIOLA AND NEAR THE N APPROACH TO THE WINDWARD PASSAGE. THE GRADIENT WILL TIGHTEN OVER THE WEEKEND WITH E WINDS INCREASING TO 20-25 KT ALONG THE N COAST OF HISPANIOLA ON FRI AND TUE EVENINGS. $$ .WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE: .GULF OF MEXICO... NONE. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... NONE. .SW N ATLANTIC INCLUDING THE BAHAMAS... NONE. $$ *FOR DETAILED ZONE DESCRIPTIONS PLEASE VISIT: HTTP://WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF NOTE: GRIDDED MARINE FORECASTS ARE AVAILABLE IN THE NATIONAL DIGITAL FORECAST DATABASE (NDFD) AT: HTTP://WWW.NHC.NOAA.GOV/MARINE/GRIDS.PHP FOR ADDITIONAL INFORMATION PLEASE VISIT: HTTP://WWW.HURRICANE WARNINGS.GOV/MARINE $$ .FORECASTER NELSON. NATIONAL HURRICANE CENTER.