000
AGXX40 KNHC 130732
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
330 AM EDT SAT APR 13 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...THE EASTERN PORTION OF A COLD FRONT EXTENDING 
FROM NEAR TAMPA BAY TO THE CENTRAL COAST OF THE YUCATAN 
PENINSULA WILL BEGIN TO STALL THIS MORNING. MEANWHILE THE 
WESTERN PORTION OF THE FRONT WILL LIFT NORTHWARD INTO THE 
CENTRAL GULF...RESULTING IN A QUASI-STATIONARY FRONT EXTENDING 
FROM TAMPA BAY TO NE MEXICO BY THIS EVENING. PERSISTENT 
CONVECTION AHEAD AND ALONG THE FRONT N OF 25N OVER THE NE GULF 
IS FINALLY STARTING TO DIMINISH. HIGH PRES WILL PREVAIL ACROSS 
THE GULF STARTING SUN...ALLOWING LIGHT TO MODERATE E TO SE FLOW 
ACROSS THE BASIN THROUGH MID WEEK.

SW N ATLC S OF 31N W OF 55W...1024 MB HIGH PRES CENTERED NEAR 
31N61W WILL SHIFT E TODAY AHEAD OF A COLD FRONT STARTING TO 
EMERGE OFF THE NE FLORIDA COAST. BUOY 41002 NEAR 32N75W IS 
SHOWING 20 TO 25 KT SOUTHERLY FLOW...INDICATIVE OF OVERALL WINDS 
N OF 30N E OF THE FRONT TO ABOUT 75W. THE NORTHERN PORTION OF 
THE FRONT N OF 26N WILL CONTINUE TO SHIFT EASTWARD AND WILL 
REACH FROM 31N74W TO NEAR CAPE CANAVARAL BY THIS EVENING...THEN 
STALL FROM 31N61W TO NEAR JACKSONVILLE FLORIDA BY LATE 
SUN...BEFORE BECOMING DIFFUSE INTO MON. HIGH PRES WILL BUILD N 
OF THE AREA BEHIND THE FRONT BY EARLY NEXT WEEK...MAINTAINING 
GENERALLY LIGHT TO MODERATE BREEZES ACROSS THE AREA THROUGH 
EARLY NEXT WEEK.

CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W... HIGH PRES 
N OF THE AREA IS MAINTAINING FRESH TRADES OVER THE CENTRAL 
CARIBBEAN...WITH WINDS TO 25 KT OFF THE COAST OF COLOMBIA. SHIP 
OBSERVATIONS AND SCATTEROMETER DATA ALSO IS SHOWING FRESH TO 
STRONG SE WINDS OVER THE GULF OF HONDURAS...BETWEEN THE HIGH 
PRES IN THE ATLC AND HIGHER TERRAIN OVER NORTHERN CENTRAL 
AMERICA. LITTLE CHANGE IS EXPECTED IN THE OVERALL PATTERN 
THROUGH EARLY NEXT WEEK. THE STRONGER WINDS IN THE GULF OF 
HONDURAS WILL BE MORE PREVALENT IN THE OVERNIGHT HOURS DUE TO 
DRAINAGE EFFECTS. THE OTHER ISSUE OVER THE GULF OF HONDURAS WILL 
BE AREAS OF SMOKE FROM FIRES ALONG COASTAL HONDURAS...REDUCING 
VISILBILITY AT TIMES BELOW 3 NM.

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 CHRISTENSEN