000 AGXX40 KNHC 311821 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 245 PM EDT SUN MAR 31 2013 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND TROPICAL N ATLC...AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... HIGH PRES RIDGE ALONG 28N WILL PERSIST WITH LITTLE CHANGE EXPECTED THROUGH EARLY MON. WINDS WILL GRADUALLY VEER SOUTHWARD TONIGHT AS HIGH PRES IN THE WESTERN ATLC SLIDES EAST. FRESH TO STRONG SE WINDS WILL DEVELOP LATE TUE AND WED IN RESPONSE TO A DEEPENING AREA OF LOW PRES IN THE TEXAS PANHANDLE. STRONG HIGH PRES WILL PUSH SOUTHWARD INTO THE NORTHERN GULF WED. LOW PRES IS FORECAST TO DEVELOP IN THE NW GULF NEAR 28N95W LATE WED AND MOVE TO NEAR 29N86W LATE THU. WINDS ASSOCIATED WITH THE EXPECTED LOW WILL LIKELY BE HIGHLY VARIABLE OVER THE NEXT FEW MODEL RUNS DEPENDING ON THE LOCATION AND STRENGTH OF THE LOW PRES CENTER. THE ASSOCIATED COLD FRONT WILL EXTEND FROM LOW PRES CENTER TO THE BAY OF CAMPECHE LATE THU. SO FAR...NO GUIDANCE INCLUDING ENSEMBLE SUGGESTS GALE FORCE WINDS IN ASSOCIATION WITH THIS DEVELOPING LOW PRES SYSTEM. SW N ATLC S OF 31N W OF 55W... A 1026 MB HIGH PRES CENTERED NEAR 30N68W EXTENDS A RIDGE ACROSS THE REGION. LATEST SCATTEROMETER DATA ALONG WITH FEW SHIP OBSERVATIONS SHOWED FRESH TO STRONG EAST WINDS ON THE SOUTHERN PERIPHERY OF THE RIDGE...PARTICULARLY S OF 23N BETWEEN 69W AND 74W. EXPECT THE RIDGE TO PERSIST ALONG 28N THROUGH MON EVENING WHILE THE HIGH PRES CENTER SHIFTS EAST INTO THE CENTRAL ATLC. MAINLY FRESH SW WINDS WILL DEVELOP N OF 29N THROUGH MON AHEAD OF A WEAK COLD FRONT AS IT MOVES ACROSS THE N WATERS MON NIGHT THROUGH WED. A LOW PRES SYSTEM EXPECTED TO DEVELOP IN THE GULF OF MEXICO WED AND THU WILL CAUSE SE WINDS TO STEADILY INCREASE FROM W TO E ACROSS THE N WATERS BY THU...WITH SEAS BUILDING TO 7- 8 FT IN NW PORTION LATE THU. WINDS MAY REACH NEAR GALE FORCE IN THE NW WATERS THU NIGHT INTO FRI. CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W... THE 1110 UTC WINDSAT PASS AND A COUPLE OF SHIP OBSERVATIONS SHOWED 25-30 KT NE-E WINDS ACROSS THE MAJORITY OF THE CENTRAL CARIBBEAN. THESE WINDS WERE ALSO CONFIRMED BY THE 1458 HIGH RESOLUTION ASCAT PASS. EXPECT 25-30 KT WINDS TO PERSIST NEAR THE COAST OF COLOMBIA...WITH SEAS BUILDING TO 12-13 FT THROUGH EARLY TUE...THEN DIMINISH WED AS HIGH PRES N OF THE AREA SLIDES E INTO THE CENTRAL ATLC. FRESH TO STRONG WINDS ARE ALSO EXPECTED TO BLOW ACROSS THE EASTERN CARIBBEAN MON AND TUE...RAISING SEAS TO 7-9 FT. A BROAD AREA OF FRESH TRADES WILL DEVELOP ACROSS THE TROPICAL N ATLC TUE THROUGH THU WITH SEAS TO AROUND 9 FT. FRESH SE WINDS ARE EXPECTED ACROSS THE WESTERN CARIBBEAN...INCLUDING THE GULF OF HONDURAS WED AND THU AS PRES GRADIENT TIGHTENS BETWEEN STRONG HIGH OVER THE CAROLINAS...BUILDING S INTO THE NORTHERN CARIBBEAN AND LOW PRES DEVELOPING ACROSS THE GULF OF MEXICO WATERS. WARNINGS... GULF OF MEXICO... .NONE. CARIBBEAN SEA AND TROPICAL N ATLC... .NONE. SW N ATLC... .NONE. EFFECTIVE 20 MARCH 2013...TAFB GRIDDED MARINE FORECASTS FOR 10-M WINDS...10-M WIND GUSTS...SIGNIFICANT WAVE HEIGHTS AND HAZARDS ARE AVAILABLE IN THE NATIONAL DIGITAL FORECAST DATABASE (NDFD) ON AN EXPERIMENTAL BASIS AT: HTTP://PREVIEW.WEATHER.GOV/GRAPHICAL ADDITIONAL INFORMATION IS AVAILABLE AT WWW.NWS.NOAA.GOV/OM/NOTIFICATION/PNS13OFFSHORE_HIGHSEAS.HTM NOTE...GRIDDED MARINE FORECASTS AT WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE WILL BE DISCONTINUED ONCE THE "OCEANIC" VIEW IS ADDED TO THE EXPERIMENTAL NDFD GRAPHICAL INTERFACE. $$ FORECASTER GR