000 AGXX40 KNHC 270457 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 130 AM THU JUL 27 2006 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. A LARGE UPPER LEVEL ANTICYCLONE COVERS THE ATLC AREA E OF 70W. A SMALLER UPPER RIDGE WAS LOCATED OVER THE WRN GULF WITH WEAK UPPER TROUGH BETWEEN THE TWO ALONG 75W. ON THE SURFACE THE ATLC RIDGE WAS CENTERED NEAR 33N53W AT 1028 MB WITH AN AXIS EXTENDING WSW TO N FL. TROPICAL WAVES WERE LOCATED ALONG 44W..65W AND 82W MOVING W 15 KT. LATER DAY 1 THE ATLC UPPER RIDGE WILL REMAIN IN PLACE WHILE THE WRN GULF RIDGE SHIFTS TO THE NE GULF. THE TROUGH ALONG 75W REMAINS IN PLACE. ON THE SURFACE LITTLE CHANGE WITH THE ATLC RIDGE AXIS REMAINING ALONG 30N W TO THE N GULF COAST. MODERATE TRADES S OF 24N E OF 75W. OCCASIONAL MODERATE SE WINDS IN THE GULF W OF 90W. FOR DAY 2 THE ATLC UPPER RIDGE CENTER SHIFTS WWD TO 32N65W WHILE THE TROUGH ALONG 75W DISSIPATES. ON THE SURFACE THE ATLC RIDGE CENTER SHIFTS WWD TO NEAR 32N61W AT 1027 MB WITH IT'S AXIS ALONG 30N INTO THE NRN GULF. MODERATE TRADES WILL PREVAIL S OF 24N E OF 80W AND OVER THE CARIB S OF 18N. GULF WINDS WEAKEN SLIGHTLY. OUTLOOK PERIOD... THE WESTWARD MOVING UPPER RIDGE CONTINUES DAY 3 INTO THE GULF ALONG 28N. THE RIDGE EXTENDS EWD TO 50W. ON THE SURFACE A WEAKER ATLC RIDGE 1022 MB WILL PREVAIL ALONG 28N W OF 50W. MODERATE TRADES S OF 23N BETWEEN 60W AND 80W. CARIB WINDS DECREASE SOME BUT ARE MOSTLY MODERATE FROM 13N TO 20N E OF 78W. GULF WINDS MOSTLY LIGHT UNDER A WEAK PRESSURE GRADIENT. THE UPPER RIDGE CONTINUES WWD TO THE NW GULF DAY 4. THE RIDGE EXTENDS EWD TO 60W. A WEAKNESS IN THE PRESSURE FIELD WIDENS BETWEEN 40W AND 60W ALLOWING THE WESTERLIES TO BEGIN PENETRATING S OF 30N. ON SHORTWAVE TROUGH IS NOTED MOVING OFF THE SE COAST DAY 4. ON THE SURFACE THE ATLC RIDGE CONTINUES TO WEAKEN..1019 MB WITH THE AXIS DRIFTING S TO 27N. THE ONLY MODERATE TRADES SHOULD BE OVER THE BAHAMAS AND THE N CENTRAL CARIB..OTHERWISE MOSTLY LIGHT WINDS ELSEWHERE. ON DAY 5 THE UPPER RIDGE OVER THE GULF BUILDS NWD OVER THE SE US WHILE WEAKLY COVERING THE SW ATLC E TO 50W. THE BROAD WEAKNESS IN THE PRESSURE FIELD OVER THE MID ATLC BEGINS TO LIFT NE ALONG 45W DAY 5. ON THE SURFACE THE ATLC RIDGE DRIFTS S TO ALONG 26N WITH A 1021 MB CENTER NEAR 26N55W. AN AXIS EXTENDS WWD OVER CENTRAL FL AND WEAKLY INTO THE GULF. A SMALL AREA OF MODERATE SE WINDS OVER THE ERN CARIB AND SRN BAHAMAS SHOULD BE THE MAXIMUM WINDS. GULF AND ERN CARIB WINDS MOSTLY LIGHT. .WARNINGS... ATLC...NONE. CARIBBEAN...NONE. GULF OF MEXICO...NONE. FORECASTER RRG