000
AGXX40 KNHC 171729
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 PM EDT SAT MAY 17 2008

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

LARGE DEEP LAYER RIDGE IS ALONG 20N WITH WESTERLIES NORTH OF 
25N. THIS PATTERN WILL CHANGE LITTLE THROUGH MONDAY THEN THE 
RIDGE WILL EXPEND NORTHWARD AND BY THURSDAY THE WESTERLIES WILL 
BE MOSTLY NORTH OF THE AREA. A SHORTWAVE WILL MOVE THROUGH THE 
WESTERLIES ACROSS THE NORTH GULF OF MEXICO COAST TONIGHT THROUGH 
SUNDAY NIGHT. THE SHORTWAVE WILL BECOME ABSORBED IN THE WESTERLY 
FLOW OVER THE NORTHWEST PART OF THE ATLANTIC AREA MONDAY.

AT THE SURFACE A TROUGH NORTH OF THE ATLANTIC AREA WILL INCREASE 
THE SOUTHWEST FLOW NORTH OF ABOUT 27N. THIS TROUGH WILL MOVE 
EAST OF BERMUDA TONIGHT. ANOTHER TROUGH WILL MOVE OFF THE EAST 
U.S. COAST LATE SUNDAY AND ALSO INCREASE THE SOUTHWEST FLOW IN 
THE ATLANTIC AREA NORTH OF ABOUT 27N. THIS TROUGH WILL MOVE EAST 
OF BERMUDA MONDAY NIGHT.

LARGE LOW DEVELOPING IN THE PLAINS STATES WEDNESDAY WILL 
INCREASE THE RETURN FLOW IN THE WESTERN GULF OF MEXICO WEDNESDAY 
INTO THURSDAY. 

THE SURFACE RIDGE OVER THE GREATER ANTILLES IS NOT PARTICULARLY 
STRONG SO THE TRADES OF 20 KNOTS OR MORE WILL BE LESS THAN 
NORMAL AND MOSTLY CONFINED TO THE SOUTHERN CARIBBEAN. ATLANTIC 
TRADES WILL BE 20 KNOTS OR LESS WITH THE STRONGEST WINDS SOUTH 
OF ABOUT 15N.

WARNINGS...

ATLC...
NONE. 

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

.FORECASTER LL. TROPICAL PREDICTION CENTER.