000
AGXX40 KNHC 091806
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
230 PM EDT FRI APR 9 2010

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

GULF OF MEXICO...
COLD FRONT 28N84W TO 21N90W MOVE OUT OF GULF TONIGHT.  HIGH PRES 
BUILDS IN BEHIND FRONT ACROSS GULF WHILE WEAK TROUGH DEVELOPS IN 
BAY OF CAMPECHE.  TROUGH LINGER IN SW GULF THROUGH MON WITH 
TIGHT GRADIENT STRENGTHENING EASTERLY WINDS ACROSS MOST OF GULF 
LATE TUE.  ABOVE NORMAL UNCERTAINTY EXIST FOR MON AND TUE DUE TO 
LACK OF CONSENSUS AMONG GUIDANCE MODELS BUT MOST INDICATE LOWER 
PRES IN SW GULF AND INCREASE IN WINDS ACROSS GULF.  

CARIBBEAN SEA AND TROPICAL N ATLC...
TIGHT PRES GRADIENT REMAINS IN CENTRAL CARIBBEAN WITH RIDGE N OF 
GREATER ANTILLES AND LOWER PRES OVER COLOMBIA.  PATTERN PERSIST 
THROUGH SUN NIGHT.  GRADIENT WEAKEN LATE SUN NIGHT THROUGH TUE 
AS RIDGE RETREATS E FORCED BY ATLC COLD FRONT AND LOW PRES OVER 
COLOMBIA WEAKENS.  

MEANWHILE...WEAK FRONTAL TROUGH REMAINS ALONG 14N IN TROPICAL N 
ATLC.  STRONGER WINDS DIMINISH THROUGH SUN AS FRONTAL TROUGH 
LOOSES DEFINITION LATE IN FORECAST PERIOD.

SW N ATLC W OF 55W...
HIGH PRES RIDGE CURRENTLY EXTENDS FROM 29N65W TO STRAITS OF 
FLORIDA.  SOUTHERLY RETURN FLOW HAS STRENGTHENED OFF COAST OF 
FLORIDA N OF BAHAMAS AHEAD OF COLD FRONT NOW OVER FLORIDA.   
STRONG SOUTHERLY WINDS EXPECTED N OF 28N E OF FRONT WITH WINDS 
SHIFTING NW BEHIND FRONT THEN QUICKLY DIMINISH TONIGHT AS FRONT 
RUNS INTO STURDY RIDGE.  FRONT STRETCH FROM 31N74W TO STRAITS OF 
FLORIDA TONIGHT THEN FROM 31N65W TO E CUBA LATE SAT.  FRONT 
DISSIPATE SAT NIGHT.  HIGH PRES BUILDS IN BEHIND FRONT FROM 
CAROLINAS AND FRESH EASTERLY BREEZE SETS ACROSS BASIN THROUGH 
TUE WITH WINDS INCREASING TO STRONG LATE TUE NIGHT AS GRADIENT 
TIGHTENS FURTHER.

WARNINGS...
ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER WALLY BARNES