000 AGXX40 KNHC 210534 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 135 AM EDT SAT JUL 21 2007 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. UPPER LEVELS... TROUGH OVER THE AREA WILL GRADUALLY DRIFT WEST AND RETREAT NORTHWARD AS RIDGE BUILDS OVER THE AREA FROM THE NORTHEAST. SURFACE... WEAK COLD FRONT WILL MOVE OFF THE SOUTHEAST U.S. COAST EARLY TODAY AND MOVE TO NEAR 31N75W TO CENTRAL FLORIDA EARLY SUNDAY THEN BECOME DIFFUSE BY EARLY MONDAY. OTHERWISE WEAK PRESSURE PATTERN OVER THE AREA WITH RIDGE EAST OF 70W. THE RIDGE WILL GRADUALLY BUILD WEST OVER THE AREA AND REMAIN WEAK. WARNINGS... ATLANTIC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER LL