000
AGXX40 KNHC 110727
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
230 AM EST MON JAN 11 2010

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

GULF OF MEXICO...
1036 MB HIGH LOCATED OVER THE UPPER TEXAS COAST EXTENDS A RIDGE 
OVER THE ENTIRE GULF REGION. THIS SYSTEM WILL MOVE EWD TOWARD SE 
LOUISIANA WITHIN 24 HOURS. TIGHT GRADIENT CONTINUES TO PRODUCE 
FRESH TO STRONG NLY WINDS OF 20-25 KT ACROSS THE SE GULF AND 
THROUGH THE YUCATAN CHANNEL...AND LIKELY STILL ACROSS THE FAR SW 
GULF...INCLUDING THE BAY OF CAMPECHE. SURFACE DATA ALONG WITH AN 
ASCAT PASS FROM AROUND 0245 UTC SHOW NLY WINDS IN THE 20 TO 25 
KT RANGE OVER THE EASTERN HALF OF THE GULF WHILE WINDS ARE 
BEGINNING TO DIMINISH OVER THE NW GULF DUE TO THE PRESENCE OF 
THE ABOVE MENTIONED HIGH PRES. SEAS ARE ALSO EXPECTED TO SUBSIDE 
PARTICULARLY ACROSS THE SE GULF WHERE SOME SHIP REPORTS INDICATE 
AROUND 10 FT. WINDS AND SEAS WILL CONTINUE TO DIMINISH TODAY 
THROUGH WED AS THE HIGH CENTER MOVES TOWARD SE LOUISIANA. SLY 
RETURN FLOW WILL INCREASE TO 20-30 KT OVER THE WESTERN GULF THU 
AHEAD OF THE NEXT COLD FRONT FORECAST TO MOVE OFF THE COAST OF 
TEXAS THU NIGHT INTO EARLY FRI. 

CARIBBEAN AND TROPICAL N ATLC W OF 55W...
STRONG PRES GRADIENT AND UNUSUALLY STRONG COLD AIR ADVECTION 
CONTINUE TO AFFECT THE NW CARIBBEAN BEHIND A STATIONARY FRONT 
CURRENTLY EXTENDING FROM E DOMINICAN REPUBLIC TO THE SW 
CARIBBEAN NEAR 10N80W. THE STRONGEST WINDS ARE NOTED OVER THE 
GULF OF HONDURAS AND JUST OFFSHORE THE CARIBBEAN PLAINS OF 
NICARAGUA. PUERTO CABEZAS AND BLUEFIELDS ALONG THE COAST OF 
NICARAGUA ARE REPORTING SUSTAINED WINDS BELOW 25 KT. IN 
ADDITION...A RECENT ASCAT-HI PASS REVEALS WINDS IN THE 20 TO 30 
KT RANGE. BASED ON THESE DATA...DECIDED TO DROP THE GALE WARNING 
THAT IS IN EFFECT S OF 15N AND W OF 81W IN THE NEXT FORECAST 
PACKAGE. THE FRONT WILL SLOWLY MOVE TO THE E-SE TODAY WITH THE 
SOUTHERN PORTION OF THE FRONT DISSIPATING BY TUE AS THE NORTHERN 
PORTION CONTINUES E-SE ACROSS THE ATLC AND NE CARIBBEAN. FRESH 
NE WINDS WILL PERSIST NW OF THE FRONT THROUGH WED...THEN WILL 
DIMINISH THU WITH EASTERLY TRADES INCREASING ACROSS THE S AND 
CENTRAL CARIBBEAN AS HIGH PRES BUILDS N OF AREA.

SW N ATLC S OF 31N W OF 55W...
ATLC COLD FRONT EXTENDS 31N55W TO DOMINICAN REPUBLIC NEAR 19N70W
WITH STRONG N-NW FLOW BEHIND IT OFF OF FLORIDA...ACROSS THE 
BAHAMAS AND INTO CUBA. A RECENT ASCAT PASS SHOWS NEAR GALE FORCE 
WINDS BEHIND A REINFORCING COLD FRONT EXTENDING FROM 1010 MB LOW 
LOCATED NEAR 31N68W TO THE CENTRAL BAHAMAS. NW-N WINDS OF 20-30 
KT WILL PREVAIL N OF 20N W OF 70W TODAY...WITH SEAS BUILDING 8 
TO 14 FT IN N TO NW SWELL. THE LOW WILL MOVE E-NE AND OUT OF 
AREA TO NEAR 32N58W LATE TODAY WITH A TRAILING COLD FRONT TO 
EASTERN HISPANIOLA. HIGH PRES BUILDS IN BEHIND THE FRONT TODAY 
INTO EARLY WED...WITH ANOTHER COLD FRONT CLIPPING THE N PORTION 
OF THE AREA LATE TUE THROUGH WED...MOVING E OF 65W BY WED NIGHT. 
HIGH PRES REBUILDS ACROSS THE WATERS WED THROUGH THU. 

WARNINGS...
ATLC...
.NONE.

CARIBBEAN...
.NONE. 

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER GR