000 AGXX40 KNHC 120655 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 255 AM EDT TUE JUN 12 2007 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. UPPER LEVELS... UPPER LEVEL TROUGH NOW E OF BASIN LEFT PLENTY OF MOISTURE BEHIND ALONG WEAK 656 KT JET CORE N OF 27N. MID/UPPER LEVEL RIDGES... ONE OVER CENTRAL TEXAS AND SECOND OVER SOUTH AMERICA PRODUCE SHARP DEFORMATION ZONE FROM SOUTH FLORIDA TO CYCLONIC VORTEX OVER ISTHMUS OF TEHUANTEPEC. DRY GULF OF MEXICO STILL UNDER INFLUENCE OF MID/UPPER LEVEL RIDGE CARRIES NO SIGNIFICANT WEATHER FEATURES ALTHOUGH THAT IS LIKELY TO CHANGE AT SURFACE LEVELS SOON. SIMILARLY...CARIBBEAN REMAINS UNDER MID/UPPER LEVEL RIDGE BUT WITH PLENTY OF TROPICAL MOISTURE AVAILABLE AND DYNAMIC AS DIFFLUENT ANTICYCLONIC FLOW ALOFT ON WRN SIDE OF SOUTH AMERICA RIDGE ENHANCING CONVECTION MAINLY IN WRN CARIBBEAN. AT THE SURFACE... ERN CARIBBEAN AND TROPICAL ATLC TRADES INCREASE AS LOW PRES OVER COLOMBIA TIGHTENS GRADIENT WITH ATLC RIDGE FORCED S WED BY DEVELOPING LOW PRES OVER SW N ATLC. TROUGH ALONG FLORIDA E COAST EASES WINDS OVER WRN CARIBBEAN. LOW PRES AND TROUGH DRIFT NE THU WITH STRONG SWLY WIND TRAPPED BETWEEN LOW PRES AND ATLC RIDGE FORCED E. WINDS OVER SW N ATLC BECOME VERY LIGHT FRI AND SAT AS LOW PRES EXITS BASIN. NAM AND GFS SOLUTIONS SUPPORT THIS SCENARIO WHILE UKMET HAS MUCH SLOWER AND WEAKER SYSTEM. WARNINGS... ATLANTIC...NONE. CARIBBEAN...NONE. GULF OF MEXICO...NONE. FORECASTER WALLY BARNES