000 AGXX40 KNHC 080536 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 136 AM EDT WED JUL 08 2009 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. UPPER LEVELS... BROAD WEAK TROUGH WEST OF 70W WILL STRENGTHEN SOME AND BE CONFINED TO THE EASTERN HALF OF THE GULF OF MEXICO BY THURSDAY. SATURDAY THE TROUGH WILL WEAKEN AND MOVE WEST WITH TROUGH OVER THE WEST GULF OF MEXICO COAST BY LATE SUNDAY AND WEAK RIDGE ELSEWHERE. SURFACE... RIDGE ALONG 25N WILL GRADUALLY MOVE NORTH AND WEAKEN WITH WEAK RIDGE ALONG 28N SUNDAY. TROUGH JUST TO THE NORTH OF THE AREA THROUGH EARLY FRIDAY WILL WEAKEN FRIDAY WITH WEAK PRESSURE GRADIENT NORTH OF RIDGE SATURDAY AND SUNDAY. TRADES CONTINUE AT OR SLIGHTLY ABOVE NORMAL IN THE CARIBBEAN AND LESS THAN NORMAL OVER THE TROPICAL ATLANTIC AREA. WARNINGS ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FORECASTER LL. TROPICAL PREDICTION CENTER.