000 AGXX40 KNHC 121913 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 330 PM EDT FRI APR 12 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...COLD FRONT EXTENDS FROM BIG BEND FLORIDA TO VERACRUZ MEXICO. SCATTERED TSTMS...SOME MAY BE SEVERE...N OF 24N ALONG AND WITHIN 90 NM OF FRONTAL BOUNDARY EXPECTED THROUGH TODAY. WEATHER IMPROVES BY SAT AS UPPER LEVEL SUPPORT FOR COLD FRONT SHIFT NORTHEASTWARD AND ATLC HIGH PRES FORCES FRONT TO STALL ALONG YUCATAN CHANNEL LATE SAT THEN BECOME DIFFUSE SUN. HIGH PRES CENTER 1018 MB BUILDS OVER EASTERN STATES BRINGING LIGHT TO MODERATE E-SE BREEZE ACROSS ENTIRE BASIN THROUGH WED. SW N ATLC S OF 31N W OF 55W...HIGH PRES CENTER E OF AREA FORCED E BY COLD FRONT THAT EMERGED OFF NE FLORIDA COAST THIS MORNING. MODERATE WIND FLOW ALONG FLORIDA E COAST INCREASE TO A FRESH BREEZE TODAY BEFORE SHIFTING NW TO N BEHIND FRONT. FRONT REACH FROM 31N75W TO 27N80W LATE SAT AND 31N65W TO 30N74W...THEN AS DISSIPATING STATIONARY FRONT TO E CENTRAL FLORIDA LATE SUN. HIGH PRES BUILD BEHIND FRONT SUN THROUGH WED WITH LIGHT TO MODERATE E-SE FLOW EXCEPT A FRESH BREEZE ALONG SOUTHERN LATITUDES. CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W... HIGH PRES N OF AREA MAINTAINS FRESH TRADES OVER EASTERN CARIBBEAN WHILE GULF OF HONDURAS AND CENTRAL CARIBBEAN EXPERIENCE A TIGHTER PRES GRADIENT DUE TO WEAK 1010 MB LOW PRES OVER NW COAST OF COLOMBIA. LITTLE CHANGE EXPECTED IN PATTERN THROUGH WED. WARNINGS... GULF OF MEXICO... .NONE. CARIBBEAN SEA AND TROPICAL N ATLC... .NONE. SW N ATLC... .NONE. EFFECTIVE 9 APRIL 2013...TAFB GRIDDED MARINE FORECASTS FOR 10-M WINDS...10-M WIND GUSTS...SIGNIFICANT WAVE HEIGHTS AND HAZARDS FOR THE OFFSHORE AND HIGH SEAS DOMAIN 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 ARE NO LONGER AVAILABLE. $$ FORECASTER WALLY BARNES