000
AGXX40 KNHC 300518
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EDT THU AUG 30 2007

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

A BROAD MID LEVEL RIDGE EXTENDS FROM THE SW CONUS ACROSS THE NE 
GULF TO THE MID ATLC. WEAK IMPULSES IN THE WESTERLIES ARE 
WORKING THEIR WAY INTO OUR REGION TONIGHT BETWEEN 60W AND 70W. 
WATER VAPOR IMAGERY SHOWS ONE NEAR 29N75W MOVING SSE 15 KT. ON 
THE SURFACE TONIGHT WEAK TRPL WAVES WERE ALONG 48W AND 73W. THE 
ATLC RIDGE REMAINS WEAK AND MAINLY E OF 70W. EQUALLY WEAK PRES 
PATTERN EXISTS OVER THE GULF WITH LIGHT WINDS. CARIB AND ATLC 
TRADES ARE MOSTLY 15 TO 20 KT.

LATER DAY 1 A WEAKNESS IN THE MID LEVEL PRES PATTERN WILL 
CONTINUE BETWEEN 65W AND 80W WHERE WEAK IMPULSES WILL FIND A 
PATH OUT OF THE WESTERLIES TO TRAVEL S. OTHERWISE MID LEVEL 
RIDGING WILL CONTINUE OVER THE ATLC ALONG 25N E OF 70W AND OVER 
THE SW CONUS EXTENDING SE OVER THE GULF AND NW CARIB. ON THE 
SURFACE LATER DAY 1 PRESSURE SYSTEMS WILL REMAIN WEAK. LOW PRES 
OFF THE SE COAST WILL BE MONITORED FOR POSSIBLE TRPL 
DEVELOPMENT. WINDS OVER THE REGION MOSTLY 10 TO 15 KT WITH 15 TO 
20 KT CENTRAL CARIB AND ATLC TRADES S OF 20N W OF 50W.

FOR DAY 2 A WEAKNESS IN THE PRES FIELD WILL CONTINUE ALONG 75W 
WHILE HIGH PRES ALONG 25N E OF 65W REMAINS IN PLACE. ON THE 
SURFACE DAY 2 THE ATLC RIDGE AXIS REMAINS ALONG 26N E OF THE 
BAHAMAS WITH SOME INCREASE IN SLY WINDS BETWEEN THE RIDGE AND 
LOW PRES OFF THE SE COAST. GULF WINDS REMAIN LIGHT WHILE CARIB 
WINDS LIGHT TO MODERATE.

OUTLOOK PERIOD...

FOR DAY 3 A BUBBLE OF MID LEVEL HIGH PRES WORKS IT'S WAY WWD TO 
25N65W AND ACTS AS A BLOCK TO THE WESTERLIES WHICH FOR THE WHILE 
STAY N OF 35N. ON THE SURFACE DAY 3..THE FIRST DAY OF 
SEPTEMBER..THE ATLC RIDGE ORIENTS ITSELF ALONG 27N E OF THE 
BAHAMAS WITH LIGHT TO MODERATE TRADES S OF 22N AND OVER THE 
CENTRAL CARIB. GULF WINDS REMAIN LIGHT. 

FOR DAY 4 THE MID LEVEL BUBBLE OF HIGH PRES CONTINUES TO MOVE 
SLOWLY WWD TO 25N80W. MID LEVEL RIDGING CONTINUES OVER THE ATLC 
EWD ALONG 24N. THE WESTERLIES TAKE ADVANTAGE OF THE MOVEMENT OF 
THE BUBBLE AND SEND WEAK IMPULSES SE INTO OUR REGION TO THE E OF 
60W.  ON THE SURFACE DAY 4 THE ATLC RIDGE WHILE WEAK WILL 
MAINTAIN A PRESENCE FROM A 1020 MB HIGH NEAR 30N40W TO A 1019 MB 
HIGH JUST E OF THE BAHAMAS. CARIB WINDS E OF 78W REMAIN MODERATE 
WHILE GULF AND ATLC WINDS N OF 22N MOSTLY LIGHT.

FOR DAY 5 THE BUBBLE OF MID LEVEL HIGH PRES CONTINUES WWD TO THE 
CENTRAL GULF WHILE A WEAK MID LEVEL RIDGE MAINTAINS IT'S SELF 
ALONG 23N. THE WESTERLIES CONTINUE TO PUSH INTO OUR REGION S OF 
30N BETWEEN 40W AND 70W. ON THE SURFACE DAY 5 THE ATLC RIDGE 
WITH IT'S 1019 MB CENTER RE-ORIENTS E OF 60W WHILE THE OTHER 
SEGMENT ELONGATES ALONG 26N FROM THE BAHAMAS WWD ACROSS THE 
GULF. LITTLE CHANGE TO WINDS OVER THE REGION WITH MOST AREAS 
WITH LIGHT WINDS EXCEPT CENTRAL CARIB WINDS AT 15 TO 20 KT. 

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO... 
NONE.

FORECASTER RRG