000 AGXX40 KNHC 261943 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 345 PM EDT FRI JUN 26 2009 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO...AN E TO W RIDGE WILL EXTEND FROM SOUTHERN FL TO THE TX COAST THROUGH THE PERIOD. A COUPLE OF TROPICAL WAVES WILL MOVE THROUGH THE YUCATAN CHANNEL AND THE BAY OF CAMPECHE THROUGH TUE. AN UPPER CUT OFF LOW OVER THE YUCATAN CHANNEL IS ALSO EXPECTED TO SHIFT W WITH UPPER DIFFLUENCE OVER ITS E SEMICIRCLE ENHANCING CONVECTION ALONG THE FIRST TROPICAL WAVE. WILL FORECAST A NE TO SE WIND SHIFT AT A CONSERVATIVE 10 TO 15 KT WITH BOTH WAVE PASSAGES. SW ATLC... A LOW LEVEL TROUGH HAS SHIFTED SE OF BERMUDA WITH AN E TO W RIDGE EXTENDING ACROSS THE AREA ALONG 23N TO 24N. LATEST GUIDANCE SUGGESTS THE RIDGE WILL CHANGE LITTLE THROUGH THE PERIOD WHILE A SERIES OF WEAK COLD FRONTS...OR TROUGHS...WILL SWEEP E THROUGH THE NORTHERN WATERS ACCOMPANIED BY A VERY SLIGHT SW TO WSW WIND SHIFT. THE GRADIENT WILL TIGHTEN N OF 28N WITH SLY WINDS INCREASING TO 15 TO 20 KT TONIGHT AND 20 TO 25 KT SAT THROUGH MON THEN WEAKENING SOME TUE. TROPICS INCLUDING CARIBBEAN...A TROPICAL WAVE ALONG 83W IS EXPECTED TO MOVE W 15 KT THROUGH THE GULF OF HONDURAS TONIGHT. A SECOND EASTERLY WAVE ALONG 67W SHOULD REACH ALONG 75W SAT...82W SUN AND MOVE THROUGH THEN GULF OF HONDURAS BY SUNSET MON. A THIRD WAVE CURRENTLY IN THE CENTRAL ATLC SHOULD REACH ALONG 55W MON MORNING AND ENTER THE E CARIBBEAN SUNRISE TUE REACHING ALONG 65W SUNRISE WED.. WARNINGS ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FORECASTER NELSON. TROPICAL PREDICTION CENTER.