000
AGXX40 KNHC 161925
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
325 PM EDT THU JUL 16 2009

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

RIDGE ACROSS THE NORTHERN GULF OF MEXICO WITH A 1021 MB HIGH 
PRES OVER THE NE GULF NEAR 27N84W. RATHER WEAK PRES PATTERN WITH 
LIGHT WINDS N OF 25N AND IN THE 10-15 KT RANGE S OF 25N. SW 
WINDS WILL INCREASE OVER THE NE GULF AS A FRONT/TROUGH IS 
FORECAST TO MOVE ACROSS THE SE U.S. FRI NIGHT AND SAT. THIS WILL 
BRIEFLY INCREASE SW WINDS TO 15 KT OVER THE FAR NE GULF. LIGHT 
WINDS ARE EXPECTED ACROSS THE ENTIRE GULF SUN AND MON.

HIGH PRES RIDGE ACROSS THE ATLC ALONG 27N/28N WILL PERSIST 
THROUGH MON THEN MOVE N OF THE AREA TUE. S OF 22N ELY TRADES ARE 
IN THE 15-20 KT RANGE...OTHERWISE MOSTLY LIGHT WINDS ACROSS THE 
AREA. SW WINDS INCREASE TO AROUND 15-20 KT OVER THE FAR NW 
PORTION OF THE AREA FRI AND SAT AS A FRONT/TROUGH MOVES INTO THE 
SE U.S. COMBINED WITH THE ATLC RIDGE WILL TIGHTEN THE GRADIENT.
THE WINDS DECREASE LATE SUN AND MON. THE RIDGE TO THE N 
STRENGTHENS ON TUE AND ELY TRADES INCREASE TO 20-25 KT S OF 
AROUND 27N E OF THE BAHAMAS...WITH SEAS BUILDING 8-10 FT.

WITH THE ATLC RIDGE SET IN PLACE...AND LOWER PRES OVER NORTHERN 
S AMERICA WILL CONTINUE WITH THE STRONG TRADES IN THE 
CARIBBEAN...MAINLY NEAR THE COAST OF COLOMBIA AND WESTERN 
VENEZUELA. THIS COMBINED WITH A TROPICAL WAVE MOVING THROUGH THE 
AREA WILL ALLOW FOR GALE CONDITIONS TO CONTINUE FOR A PORTION OF 
THE SOUTHERN CARIBBEAN INTO EARLY FRI. THE TROPICAL WAVE IS
FORECAST TO MOVE W ACROSS CENTRAL AMERICA FRI EVENING. THIS WILL 
WEAKEN THE PRES GRADIENT WITH WINDS DIMINISHING TO LESS THAN 
GALE FORCE. THE WINDS WILL REMAIN STRONG IN THAT AREA THROUGH 
SUN THEN DECREASE ON MON AND TUE AS THE ATLC RIDGE MOVES N.

WARNINGS
ATLC...
.NONE. 

CARIBBEAN...
.GALE WARNING FROM 11N-14N BETWEEN 73W-78W...AMZ084 AND AMZ086

GULF OF MEXICO...
.NONE.

FORECASTER DGS. TROPICAL PREDICTION CENTER.