000
AGXX40 KNHC 060612
MIMATS

MARINE WEATHER DISCUSSION        
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
215 AM EDT MON SEP 06 2010

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA 
AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

GULF OF MEXICO...
THE LOW PRES OVER SW GULF MOVED FAR ENOUGH OFFSHORE TO DEVELOP 
INTO TD 10 AND IS FORECAST TO TRACK NW TODAY TO INLAND MEXICO 
JUST BEFORE SUNRISE TUE MORNING. CYCLONIC WINDS 20-25 KT JUST 
DEPICTED BY 0356Z ASCAT PASS OVER AREA S OF 27N BETWEEN 90W AND 
96W. E TO SE WINDS ARE AT 15 TO 20 KT ELSEWHERE S OF 28N W OF 
85W. EXPECT PRES GRADIENT TO SUPPORT FORECAST OF 15-20 KT ALL 
WATERS S OF 28N W OF 85W AFTER LANDFALL INTO TUE NIGHT AND E-SE 
15 KT W OF 90W THU AND FRI. 
     
SW N ATLC...
A FRONTAL TROUGH IS ALONG THE GA COAST AND IS EXPECTED TO 
MEANDER AND GRADUALLY DISSIPATE THROUGH WED. EASTERLY WINDS ARE 
AT 15-20 KT TO THE E OF A LOW LEVEL TROUGH CURRENTLY S OF 24N 
ALONG 68W BUT EXPECTED TO DIMINISH TO 15 KT TODAY AND TONIGHT. 
FORECAST UNCERTAINTY CONTINUES AS REMNANTS OF GASTON MOVE W 
THROUGH THE N CARIBBEAN ALONG 17N-18N. CONVECTION IS STILL NOT 
PERSISTENT...THUS SYSTEM HAS NOT BEEN UPGRADED. IN ANY 
EVENT...EXPECT THE E TRADES OVER THE SE ATLC WATERS TO 
INCREASE...AND PERHAPS BACK SLIGHTLY TO THE NE...AS EARLY AS 
LATE TONIGHT OVER THE PUERTO RICO TRENCH AREA. E-SE SWELLS 
SHOULD ALSO ARRIVE EARLY TUE BUILDING SEAS TO 5-8 FT OVER AREA S 
OF 23N E OF THE BAHAMAS WED THROUGH FRI. 

CARIBBEAN SEA AND TROPICAL N ATLC...
SE FLOW IS AT 15-20 KT ACROSS THE GULF OF HONDURAS AND E AT 
15-20 KT ALONG N COAST OF COLOMBIA ATTM. EXPECT THE PRES GRADIENT
TO RELAX SOME TODAY OVER THE S CENTRAL CARIBBEAN WATERS WITH 
THESE CONDITIONS SPREADING W TO OVER THE GULF OF HONDURAS ON WED 
NIGHT CONTINUING THROUGH FRI. UNCERTAINTY CONTINUES AS REMNANTS 
OF GASTON MOVE THROUGH THE TROPICAL ATLC WATERS TODAY AND 
THROUGH THE E CARIBBEAN THROUGH WED...AND THE CENTRAL CARIBBEAN 
THU AND FRI. TILL REMNANTS OF GASTON MAKE UP ITS MIND...WILL 
CONTINUE THE PREVIOUS TREND OF MOVING CYCLONIC WINDS OF 20-30 KT 
AND SEAS 8-12 FT THROUGH THE AREA. PRESSURE GRADIENT...AND THUS 
WIND AND SEAS FORECASTS...OVER REMAINDER OF AREA ARE VERY 
DEPENDENT ON THE STRENGTH AND TRACK OF THIS TROPICAL LOW...SO 
EXPECT A LOT OF TWEAKING IN EACH FORECAST PACKAGE OVER THE NEXT 
FEW DAYS.

WARNINGS...
SUBJECT TO CHANGE BASED ON LATEST NHC ADVISORY

SW N ATLC...
.NONE.

CARIBBEAN...
.NONE.

TROPICAL N ATLC...
.NONE.
  
GULF OF MEXICO...
.TS WRNG FROM 20N TO 26N W OF 96W. 

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER NELSON