000
AGXX40 KNHC 071810
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
230 PM EDT SUN APR 7 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...

A HIGH PRESSURE RIDGE PREVAILS JUST N OF THE GULF WATERS. LATEST 
SURFACE OBSERVATIONS DEPICT GENTLE TO MODERATE E TO SE WINDS AND 
SEAS 2-4 FT PREVAILING OVER THE GULF WATERS. THE HIGH PRESSURE 
RIDGE WILL CONTINUE TO PREVAIL N OF THE AREA THROUGH EARLY WED 
ENABLING FOR THE SE RETURN FLOW TO CONTINUE OVER THE GULF 
WATERS. WINDS WILL INCREASE OVER THE WESTERN GULF TUE AND WED 
WITH SEAS BUILDING TO 6-9 FT AHEAD OF THE NEXT COLD FRONT. 
MODELS STARTING TO COME INTO BETTER AGREEMENT WITH THE TIMING OF 
THE FRONT OCCURRING AROUND WED EVENING TO LATE NIGHT WED. STRONG 
TO NEAR GALE WINDS WILL PREVAIL W OF THE FRONT OVER THE MEXICAN 
COASTAL WATERS AND REACHING INTO W BAY OF CAMPECHE BY LATE THU. 
  
SW N ATLC S OF 31N W OF 55W...    

LOW PRESSURE 1008 MB IS CENTERED N OF THE AREA NEAR 33N62W WITH 
ASSOCIATED COLD FRONT ENTERING THE REGION NEAR 31N60W THEN 
EXTENDING SW TO E CUBA. LATEST SURFACE OBSERVATIONS INDICATE 
FRESH SOUTHERLY WINDS N OF 29N E OF THE FRONT...WITH FRESH TO 
STRONG W TO NW WINDS N OF 29N W OF THE FRONT TO NEAR 65W. 
ELSEWHERE MODERATE TO FRESH WINDS PREVAIL OVER THE FORECAST 
AREA. SEAS TO 9 FT PREVAIL OVER THE REGION OF STRONG WINDS E OF 
THE FRONT...AND 9-11 FT OVER THE REGION OF STRONGEST WINDS W OF 
THE FRONT. NE SWELL OF 8-10 FT PREVAILS OVER THE FAR NE ZONE OF 
THE SW N ATLC WATERS. SEAS OF 4-7 FT PREVAILS OVER THE REMAINDER 
OF THE FORECAST WATERS. THE FRONT WILL REACH FROM NEAR 28N55W TO 
25N60W WHERE IT BECOMES STATIONARY TO 25N72W EARLY MON. THE 
FRONT WILL THEN DRIFT SOUTHWARD WHILE DISSIPATING THROUGH WED. 
HIGH PRESSURE WILL BUILD IN THE WAKE OF THE FRONT TONIGHT. NE 
SWELL GENERATED NW OF THE LOW WILL AFFECT MUCH OF E AND NE 
PORTIONS THROUGH TUE BEFORE ABATING. 
 
CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W...        

A DISSIPATING FRONTAL BOUNDARY EXTENDS FROM CENTRAL CUBA TO THE 
NICARAGUA-COSTA RICA BORDER. LATEST OBSERVATIONS INDICATE 
GENTLE WINDS OVER THE WESTERN CARIBBEAN W OF THE FRONT. FRESH TO 
LOCALLY STRONG WINDS PREVAILS OVER THE FAR S CARIBBEAN WITH 
MODERATE TO FRESH TRADES OVER THE REMAINDER OF THE CARIBBEAN AND 
TROPICAL N ATLC WATERS. SEAS ACROSS THE MAJORITY OF THE 
CARIBBEAN ARE IN THE 4-6 FOOT RANGE...WITH SEAS REACHING 7 FT 
WITHIN 90 NM N OF THE S AMERICA COAST. SEAS IN THE TROPICAL N 
ATLC WATERS ARE IN THE 7-8 FT RANGE. HIGH PRESSURE WILL BUILD 
ACROSS THE W ATLC WATERS TONIGHT...BRINGING AN INCREASE IN TRADE 
WINDS OVER THE CENTRAL CARIBBEAN WATERS THROUGH THU. OTHERWISE 
MODERATE TO FRESH TRADES WILL PREVAIL OVER THE REMAINDER OF THE 
FORECAST 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 AL