000
AGXX40 KNHC 200633
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
230 AM EDT MON JUN 20 2011

GULF OF MEXICO...
A RIDGE OF HIGH PRESSURE WILL PREVAIL OVER THE NORTHERN GULF 
THROUGH TUE. THE RIDGE WILL THEN SHIFT N OF THE AREA BY TUE 
NIGHT. SE TO S RETURN FLOW WILL PREVAIL OVER THE FAR NW GULF 
THROUGH THE FORECAST PERIOD. A TROPICAL WAVE OVER THE SW GULF OF 
MEXICO WILL MOVE INTO EASTERN MEXICO ON MON NIGHT. THE TROPICAL 
WAVE WILL BRING AN INCREASE IN WINDS OVER THE SW GULF THROUGH 
WED...THEN DECREASE THU. 

SW N ATLC...
A RIDGE OF HIGH PRESSURE WILL PREVAIL ALONG 27N FOR MUCH OF THE 
FORECAST PERIOD. WINDS WILL INCREASE OVER THE N PART OF THE AREA 
SPREADING W TO E THROUGH THE FORECAST PERIOD AS LOW PRESSURE 
PASSES N OF THE AREA TIGHTENING THE PRESSURE GRADIENT. OTHERWISE 
LIGHT WINDS WILL CONTINUE OVER THE REMAINDER OF AREA THROUGH THE 
MAJORITY OF THE FORECAST PERIOD. WINDS OVER THE SOUTHERN PART OF 
THE AREA ARE EXPECTED TO INCREASE TO 15 TO 20 KT THU AND FRI 
WITH A LOCALLY TIGHTER PRESSURE GRADIENT DUE TO THE PASSAGE OF A 
TROPICAL WAVE IN THE CARIBBEAN.  

CARIBBEAN AND TROPICAL N ATLC W OF 55W...
A TROPICAL WAVE IN THE EASTERN CARIBBEAN WILL CONTINUE TO SHIFT 
EASTWARD MOVING THROUGH THE CENTRAL CARIBBEAN MON NIGHT THROUGH 
TUE AND THROUGH THE WESTERN CARIBBEAN WED THROUGH THU. A SECOND 
TROPICAL WAVE WILL MOVE INTO THE TROPICAL N ATLC WED...THE 
EASTERN CARIBBEAN THU...REACHING THE CENTRAL CARIBBEAN FRI. A 
THIRD TROPICAL WAVE WILL APPROACH THE TROPICAL N ATLC FRI NIGHT. 
THE COMBINATION OF THE TROPICAL WAVES AND A TIGHT BACKGROUND 
PRESSURE GRADIENT OVER THE CARIBBEAN WILL RESULT IN FRESH TO 
STRONG WINDS OVER MUCH OF THE AREA THROUGH THE FORECAST PERIOD. 

WARNINGS...

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER AL