000
AGXX40 KNHC 220531
MIMATS

MARINE WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EDT MON SEP 22 2008

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

UPPER LEVELS...
WEAK RIDGE OVER THE AREA WILL WEAKEN TODAY AND TUESDAY. TROUGH 
WILL DEVELOP ALONG THE EAST UNITED STATES COAST AND BECOME A 
CUT-OFF LOW WEDNESDAY AND THURSDAY COVERING THE AREA NORTH OF 
20N THURSDAY.

SURFACE...
TROUGH OVER THE CENTRAL AND SOUTHERN CARIBBEAN WILL GRADUALLY 
EXPAND NORTHWARD THROUGH WEDNESDAY. RIDGE NORTH OF THE AREA WILL 
CHANGE LITTLE THROUGH THURSDAY. THE EFFECT OF THE TROUGH 
EXPANDING AND THE RIDGE IN PLACE WILL INCREASE THE PRESSURE 
GRADIENT OVER THE NORTHERN PART OF THE AREA ESPECIALLY OVER THE 
GULF OF MEXICO AND THE NORTHWEST PART OF THE SOUTHWEST NORTH 
ATLANTIC WITH INCREASING NORTHEAST WINDS TUESDAY THROUGH 
THURSDAY.

LOW NEAR PUERTO RICO WILL MOVE NORTH AND POSSIBLE DEVELOP INTO A 
TROPICAL CYCLONE. GFS MODEL DEVELOPS THE LOW AND BRINGS THE LOW 
NORTH ALONG 70W. 

WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL. TROPICAL PREDICTION CENTER.