000 AGXX40 KNHC 151848 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 300 PM EDT MON JUN 15 2009 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... HIGH PRES REMAINS IN CONTROL ACROSS MUCH OF THE GULF REGION PRODUCING GENTLE TO MODERATE BREEZE AND SEAS UNDER 4 FT OVER E HALF OF GULF. SLY RETURN FLOW OF 15 TO 20 KT IS NOTED...PER A RECENT QSCAT PASS OVER THE WESTERN HALF OF THE AREA PARTICULARLY N OF 25N AND W OF 96W. NO MAJOR CHANGES ARE EXPECTED THROUGH FRI WITH A RIDGE DOMINATING THE NORTHERN GULF WATERS. FARTHER SOUTH...WINDS WILL OCCASIONALLY REACH 20 KT OVER THE SW PORTION OF THE GULF REGION MAINLY WITHIN 120 NM OF THE YUCATAN COAST DURING THE EVENINGS...AND WITH THE EXPECTED PASSAGES OF THE TROUGH AND TROPICAL WAVE MENTIONED BELOW. A SURFACE TROUGH CURRENTLY OVER THE WESTERN CARIBBEAN WILL MOVE INTO THE YUCATAN PENINSULA TONIGHT AND ACROSS THE SOUTHERN GULF TUE AND WED. A TROPICAL WAVE PRESENTLY LOCATED ALONG 75W WILL PASS THROUGH THE SOUTHERN GULF THU AND FRI. CARIBBEAN AND TROPICAL N ATLC W OF 55W... A TROPICAL WAVE ALONG 75W WILL MOVE W AT 10 TO 15 KT REACHING 85W WED AND PASSING INTO YUCATAN PENINSULA THU. A SURFACE TROUGH OVER THE WESTERN CARIBBEAN NEAR 86W WILL REACH THE YUCATAN PENINSULA TONIGHT. A LARGE AREA OF SCATTERED MODERATE TO ISOLATED STRONG CONVECTION...E TO SE WINDS OF 20 KT AND MAX SEAS TO 8 FT FOLLOW THE TROUGH. TRADE WINDS ARE EXPECTED TO INCREASE TO 20 TO 25 KT JUST OFFSHORE THE COAST OF COLOMBIA LATE TUE THROUGH FRI AS THE PRES GRADIENT BETWEEN THE ATLC RIDGE AND THE COLOMBIAN/PANAMANIAN LOW TIGHTENS. SUBTROPICAL ATLC W OF 65W... A SURFACE TROUGH ANALYZED FROM 30N78W TO SE FLORIDA WILL BECOME DIFFUSE TONIGHT. SCATTERED TSTMS ARE AHEAD OF THE TROUGH NEAR 28N78W. A WEAK RIDGE FROM 28N65W TO THE STRAITS OF FL WILL PERSIST THROUGH FRI. A LOW PRES SYSTEM WILL DEVELOP OFF THE SE COAST N OF AREA WED AND SLOWLY MOVE NORTHEASTWARD INCREASING SW FLOW OVER N WATERS. THE ASSOCIATED COLD FRONT IS EXPECTED TO REMAIN N OF AREA. WARNINGS ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FORECASTER GR. TROPICAL PREDICTION CENTER.