000
AGXX40 KNHC 011838
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
245 PM EDT SAT MAY 01 2010

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

GULF OF MEXICO...
FRESH TO STRONG SLY RETURN FLOW CONTINUES TO BLOW ACROSS THE 
GULF WATERS WITH SURFACE DATA AND MARINE PLATFORMS SHOWING WINDS 
IN THE 20 TO 30 KT RANGE MAINLY ACROSS THE N-CENTRAL PORTION OF 
THE REGION. THIS WEATHER PATTERN IS ASSOCIATED WITH A TIGHT 
PRES GRADIENT BETWEEN A HIGH PRES CENTERED OVER THE SW ATLC AND 
LOWER PRES ACROSS EASTERN TEXAS AND MEXICO. THESE STRONG WINDS 
WITH BUILDING SEAS TO AROUND 13 FT WILL PERSIST THROUGH SUN BUT 
ARE EXPECTED TO DIMINISH SOME W OF 95W AS A COLD FRONT REACHES 
THE COAST OF TEXAS. THE FRONT IS FORECAST TO ENTER THE NW GULF 
SUN...FOLLOWED BY N TO NE WINDS TO 20 KT...THEN STRETCH FROM SE 
LOUISIANA TO THE WESTERN PORTION OF BAY OF CAMPECHE EARLY MON... 
AND FROM THE W FLORIDA PANHANDLE TO THE CENTRAL BAY OF CAMPECHE 
EARLY TUE...THEN WEAKEN LATE TUE AND DISSIPATE WED. 

SW N ATLANTIC S OF 31N W OF 55W...
HIGH PRES CENTERED NEAR 28N65W...ANALYZED 1023 MB ON THE 1800 
UTC MAP...EXTENDS A RIDGE OVER THE ENTIRE AREA...AND EWD BEYOND 
55W. THIS SYSTEM WILL REMAIN NEAR THE NE PORTION OF THE SW ATLC 
THROUGH THE FORECAST PERIOD. EXPECT FRESH BREEZE ON THE SOUTHERN 
PERIPHERY OF THIS HIGH...PARTICULARLY S OF 24N. SLY RETURN FLOW 
HAS ALREADY ESTABLISHED OVER THE FAR WESTERN PORTION OF THE AREA 
AND IS EXPECTED TO INCREASE TO 20 KT LATE TONIGHT THROUGH TUE. A 
WEAK COLD FRONT IS EXPECTED TO CLIP THE FAR NW WATERS LATE TUE 
INTO WED.

CARIBBEAN SEA AND TROPICAL N ATLC...
TIGHT PRES GRADIENT BETWEEN HIGH PRES OVER THE SW ATLC AND LOWER 
PRES OVER THE GULF OF MEXICO IS PRODUCING FRESH TO STRONG SE 
WINDS...IN THE 20 TO 30 KT RANGE...ACROSS THE NW CARIBBEAN 
MAINLY W OF 83W INCLUDING THE YUCATAN CHANNEL. WINDS ARE 
EXPECTED TO DIMINISH TO 15 TO 20 KT BY TUE WITH SEAS SUBSIDING 
TO AROUND 5 FT. WEAKENING FRONTAL BOUNDARY OVER THE N PORTION OF 
THE SW TROPICAL ATLC WILL DRIFT S THROUGH LATE TONIGHT BEFORE 
DISSIPATING BY SUN. FRESH TO STRONG TRADES OF 20 TO 25 KT WILL 
PERSIST OVER THE CENTRAL CARIBBEAN THROUGH TUE THEN SUBSIDE BY 
WED. THE MOST RECENT WINDSAT PASS CORROBORATED THESE WINDS 
SPEEDS WITH THE STRONGEST WINDS...AS USUAL...NEAR THE COAST OF 
COLOMBIA. 

WARNINGS...
ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER GR