000 AGXX40 KNHC 051841 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 245 PM EDT TUE MAY O5 2009 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... FORECASTS SIMPLIFIES AS RIDGE DOMINATES ENTIRE GULF REGION PRODUCING MODERATE E-SE BREEZE PERSISTING THROUGH PERIOD...WITH POSSIBLE CAVEAT OF SE-S RETURN FLOW W OF 93W EXPECTED TO INCREASE ONCE AGAIN TONIGHT AS HIGH PRES OVER ATLC OCEAN GRADUALLY REBUILDS. SW N ATLC... SURFACE TROUGH FROM 31N70W TO 23N69W CONTINUE DRIFTING NW ACROSS BASIN THROUGH TONIGHT WHILE WEAKENING FURTHER EXPECTED TO BECOME DIFFUSE TONIGHT. AREA OF SCATTERED SHOWERS WITHIN 300 NM E OF AXIS. ELONGATED AREA OF 20-25 KT WINDS AND SEAS OF UP TO 9 FT SE OF TROUGH. WINDS REMAIN UNDER 20 KT AND SEAS BELOW 8 FT W OF AXIS. HIGH PRES RIDGING BUILDS OVER W ATLC WED THROUGH SAT. CARIBBEAN AND TROPICAL N ATLC... SURFACE TROUGH FROM 18N67W TO 12N64W DRIFTING W THROUGH TONIGHT EXPECTED TO BECOME DIFFUSE LATE TONIGHT. TRADE WINDS REACH A NOTCH ABOVE MODERATE BREEZE WITHIN 240 NM E OF TROUGH BUT EVEN LIGHTER W OF AXIS. TROPICAL ATLC N OF 17N REMAINS UNDER INFLUENCE OF SW N ATLC TROUGH AS MENTIONED ABOVE. ONCE TROUGH DIFFUSES...FRESH BREEZE CAUSED BY CENTRAL ATLC HIGH PRES INCREASE EASTERLY WINDS AND MODERATE SWELLS ACROSS ENTIRE BASIN. ATLC... .NONE.. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.