000
AGXX40 KNHC 091845
MIMATS

MARINE WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
145 PM EST SAT FEB 9 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 BROAD RIDGE OF HIGH PRES OVER THE EASTERN U.S. IS SUPPORTING 
MODERATE EASTERLY WINDS ACROSS THE REGION. SCATTEROMETER AND 
SURFACE OBSERVATIONS SHOW 10-15 KT WINDS OVER MOST OF THE AREA 
WITH 15 KT WINDS EVIDENT IN THE NE GULF AND N OF 24N W OF 93W. A 
WEAKENING COLD FRONT WILL REACH THE TEXAS COAST SUN NIGHT...THEN 
STALL OVER THE NORTHERN GULF THROUGH MON AFTERNOON. STRONG HIGH 
PRES BUILDING N OF THE BOUNDARY TUE WILL PUSH THE FRONT ACROSS 
THE GULF AS A COLD FRONT THROUGH THU...WITH FRESH TO STRONG 
NORTHERLY WINDS AND BUILDING SEAS EXPECTED W OF THE FRONT. SEAS 
ARE EXPECTED TO BE 8-9 FT BEHIND THE FRONT IN THE WRN GULF EARLY 
WED...THEN SUBSIDE TO AROUND 5-6 FT THU.
   
CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W...
SCATTEROMETER DATA SHOWS MOSTLY GENTLE TO MODERATE E WINDS ACROSS
THE REGION. HIGHEST WINDS ARE 15-20 KT S OF 16N E OF 60W AND 20 
TO 25 KT FROM 11N-13N BETWEEN 73W-77W. A TIGHT PRES GRADIENT IN 
THE SW CARIBBEAN WILL PERSIST THROUGH TUE...AND BRING 20-25 KT NE
WINDS TO THE SW CARIBBEAN AND NE-E 20 KT WINDS OVER MUCH OF THE 
NW AND N CENTRAL CARIBBEAN SUN THROUGH MON BEFORE DIMINISHING TO 
10-15 KT MON NIGHT. COMBINED SEAS WILL FLUCTUATE BETWEEN 6 AND 9 
FT. LONG PERIOD NW-N SWELLS WILL REACH THE NE CARIBBEAN ATLC 
PASSAGES AND NW PORTION OF TROPICAL N ATLC MON EVENING WITH SEAS 
BUILDING TO 9-12 FT. THESE SWELLS THEN CONTINUE TO MIGRATE SE 
ACROSS THE NORTH-CENTRAL TROPICAL N ATLC TUE THROUGH THU.

SW N ATLC S OF 31N W OF 55W...
A COLD FRONT EXTENDS FROM 31N62W ACROSS THE CENTRAL BAHAMAS TO 
NORTHERN CUBA. SCATTEROMETER DATA SHOWS 20-25 KT S-SW WINDS JUST 
AHEAD OF THE FRONT N OF 28N...AND FRESH TO STRONG W-NW WINDS N OF
28N W OF THE FRONT TO 77W. THE NORTHERN PORTION OF THE FRONT WILL
CONTINUE EASTWARD ACROSS THE CENTRAL ATLC THROUGH MON NIGHT WHILE
THE SOUTHERN PORTION CONTINUES TO WEAKEN THEN TRANSITION INTO A 
SHEAR LINE THROUGH MON...WITH 20-25 KT N-NE WINDS EXPECTED WITHIN
400 NM NW OF THE SHEAR LINE. STRONG HIGH PRES WILL SHIFT SE 
ACROSS THE REGION MON THROUGH TUE...ALLOWING RETURN FLOW TO SET 
UP OVER NW WATERS. SE WINDS WILL INCREASE TO 20-25 KT WED AS LOW 
PRES ALONG A FRONT IN THE NORTHERN GULF OF MEXICO TRACKS NE OVER 
GEORGIA AND DEEPENS. SEAS ARE EXPECTED TO BUILD TO 8-9 FT N OF 
29N W OF 75W WED THEN SHIFT RAPIDLY EAST THU AHEAD OF THE FRONT.

NOTE...GRIDDED MARINE FORECAST IS AVAILABLE AT 
WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE

WARNINGS...

GULF OF MEXICO...
.NONE.

CARIBBEAN SEA AND TROPICAL N ATLC...
.NONE.

SW N ATLC...
.NONE. 

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

$$
FORECASTER MUNDELL