000 AGXX40 KNHC 031829 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 230 PM EDT FRI JUL 03 2009 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. UPPER LEVELS... BROAD DEEP LAYER RIDGE OVER CENTRAL ATLC BRINGS VERY DRY STABLE AIR MASS INTO EASTERN HALF OF SW N ATLC AND NE CARIBBEAN. DEEP LAYER TROUGHS ON BOTH SIDES OF RIDGE. EASTERNMOST TROUGH SUPPORT LOW PRES 1013 MB NEAR 31N43W WITH FRESH TO STRONG BREEZE WITHIN 300 NM SE QUADRANT OF CENTER. WESTERNMOST TROUGH SUPPORTS WEAK COLD FRONT ACROSS ACROSS N GULF COASTAL STATES MOVING E INTO ATLC WATERS WITHIN NEXT 48 HRS. SURFACE... SW N ATLC HIGH PRES CENTER 1024 MB AT 27N62W HAS HEALTHY RIDGE EXTEND TO STRAITS OF FLORIDA. DRY STABLE AIR MASS OVER EASTERN HALF OF BASIN WHILE VERY WEAK COLD FRONT SCRAPE BY N FLORIDA BORDER ON ITS WAY E. RIDGE FORCED S BY COLD FRONT SQUEEZES GRADIENT ALONG SOUTHERN PERIPHERY INCREASING WINDS WITH LONG FETCH ACROSS TROPICAL ATLC BRINGING MODERATE E SWELLS INTO PICTURE. CARIBBEAN STRONG E WINDS OVER EASTERN CARIBBEAN TURN TEMPORARILY INTO NEAR GALE FURTHER W AS THEY INTERACT WITH REINFORCING STRONG WINDS ASSOCIATED WITH TROPICAL WAVE. WINDS EXPECTED TO DIMINISH SAT THROUGH SUN AS WAVE PULLS AWAY FROM AREA. GULF OF MEXICO ATLC RIDGE EXTENSION INTO GULF OF MEXICO IS WEAKENED BY COLD FRONT OVER N FLORIDA AND FLATTENED PRES PATTERN TO ITS SW. LIGHT TO GENTLE BREEZE FLOW ACROSS GULF THRU MOST OF PERIOD WITH MINOR RETURN FLOW ALONG SE TEXAS COAST AS ONLY FLY IN THE OINTMENT. WINDS INCREASE SLIGHTLY AND TEMPORARILY AS TROPICAL WAVE SKIRTS THE SOUTHERN FRINGES OF BASIN MON THRU WED. WARNINGS ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.