000 AGXX40 KNHC 160627 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 225 AM EDT WED JUL 16 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. SW N ATLC W OF 55W... A 1022 MB HIGH PRES AREA IS CENTERED NEAR 29N57W WITH A SURFACE RIDGE EXTENDING THROUGH THE CENTRAL BAHAMAS. A 02Z ASCAT PASS AND REPORTS FROM BUOY 41010 SHOW 15 KT SW WINDS BETWEEN THE RIDGE AND WEAK LOW PRES OVER THE EASTERN GULF OF MEXICO. ASCAT ALSO SHOWS 15 TO 20 KT E FLOW S OF THE RIDGE AXIS FROM THE LEEWARD ISLANDS TO THE TURKS/CAICOS S OF THE RIDGE AXIS. OTHERWISE LIGHT FLOW IS NOTED AROUND THE RIDGE AND LITTLE CHANGE IS ANTICIPATED THE REMAINDER OF TODAY. TROPICAL STORM BERTHA...CURRENTLY WELL NORTH OF THE AREA NEAR 37N62W...IS STILL EXPECTED TO VEER SOUTHEASTWARD BY THU. THIS WILL BRING A BRIEF RETURN OF 20 TO 25 KT WINDS TO WATERS GENERALLY N OF 29N BETWEEN 50W AND 65W THU AND FRI. WAVEWATCH IS ALSO SHOWING LONG PERIOD NLY SWELL UP TO 8 FT PUSHING INTO THE WATERS SOUTHWEST OF BERMUDA BY FRI. AS BERTHA MAKES ITS MOVE SE TOMORROW...THE HIGH PRES CENTER WILL SHIFT WEST TO THE WATERS BETWEEN BERMUDA AND BAHAMAS...THEN BUILD WEST THROUGH SAT. BY SUNDAY...BERTHA IS FORECAST TO LIFT OUT TO THE NE...LEAVING THE HIGH PRES OFF CAROLINAS AS THE MAIN WEATHER INFLUENCE. CARIBBEAN AND TROPICAL N ATLC W OF 55W... A PAIR OF WELL-DEFINED TROPICAL WAVES WILL MOVE WEST ACROSS THE TROPICAL ATLC AND CARIBBEAN THROUGH THE WEEKEND...BRINGING INCREASED WINDS...SEAS AND THUNDERSTORM ACTIVITY. THE WESTERNMOST EXTENDS FROM COLOMBIA TO HAITI ALONG 73W...AND IS EXPECTED TO REACH THE CENTRAL AMERICAN COAST BY LATE THU/EARLY FRI. ASCAT AND DATA FROM BUOY 42058 SHOW GENERALLY 20 KT EAST WINDS NEAR THE WAVE...BUT WINDS TO 25 KT ARE NOT OUT OF THE QUESTION TODAY AND TONIGHT AS HIGH PRES BUILDS TO THE NORTH. EAST SWELL TO 10 FT IS EXPECTED IN THE NORTH CENTRAL CARIBBEAN AS WELL TONIGHT AND THU. THE SECOND WAVE ALONG 53W AS AN ASSOCIATED 1012 MB LOW WITH IT NEAR 13N53W. THE WAVE/LOW COMPLEX WILL APPROACH BARBADOS WED NIGHT...AND PUSH INTO THE EASTERN CARIBBEAN BY LATE THU NIGHT. CONDITIONS ARE BECOMING LESS FAVORABLE FOR THE LOW TO DEVELOP AS AN UPPER TROUGH TO THE NORTH OF THE TROPICAL WAVE BRINGS DRY NW SHEAR ACROSS THE WAVE. NONETHELESS...FRESH E TRADES WILL PERSIST AS THE WAVE MOVES THROUGH THE AREA. GULF OF MEXICO... A WEAK PRES PATTERN CONTINUES OVER THE GULF WITH GENERALLY LIGHT WINDS AND MODEST SEAS. 1013 MB LOW PRES IS CENTERED OVER THE EASTERN GULF OFF THE COAST OF TAMPA. 1018 MB HIGH PRES REMAINS ANCHORED OVER THE NW GULF NEAR 28N93W. 00Z ASCAT SHOWED SOME INDICATION OF 15 TO 20 KT NE WINDS IN THE EASTERN BAY OF CAMPECHE. THIS IS PLAUSIBLE CONSIDERING THERE IS AN AREA OF DEEPENING LOW PRES OVER THE EASTERN PACIFIC SOUTH OF THE GULF OF TEHUANTEPEC. THROUGH FRIDAY...THE LOW PRES WILL WEAKEN AND RETROGRADE NW AS HIGH PRES BUILDS WESTWARD FROM THE WESTERN ATLC. E WINDS WILL INCREASE SLIGHTLY OVER THE SOUTHERN GULF DUE TO INTERACTION BETWEEN THE BUILDING HIGH OVER THE WESTERN ATLC AND A TROPICAL WAVE SHIFTING WESTWARD THROUGH THE CARIBBEAN. WARNINGS... ATLANTIC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. .FORECASTER CHRISTENSEN. TROPICAL PREDICTION CENTER.