000
AGXX40 KNHC 050713
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
300 AM EDT WED SEP 5 2007

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

UPPER LEVELS...
LARGE AMPLITUDE TROUGH OVER WRN ATLC FROM CYCLONIC VORTEX AT 
31N75W TO SECOND CYCLONIC VORTEX OVER CENTRAL CUBA FORCED 
DOWNSTREAM MID-UPPER LEVEL RIDGE EASTWARD.  UPSTREAM RIDGE OVER 
GULF OF MEXICO MAINTAINS DRY SUBSIDING AIR MASS OVER MOST OF 
BASIN EXCEPT BAY OF CAMPECHE WHERE MOISTURE BANDS FROM FELIX 
WILL BE MOVING ACROSS THROUGH THU.  CARIBBEAN SEA REMAIN SPLIT 
WITH RIDGE OVER FELIX EXTENDING OVER MOST OF WRN HALF AND 
CYCLONE ALOFT AT 13N65W PROVIDING DRY CYCLONIC FLOW ACROSS ERN 
HALF.  

SURFACE...
SEE NHC FORECAST FOR TROPICAL STORM FELIX INLAND OVER NICARAGUA- 
HONDURAS BORDER QUICKLY WEAKENING AS IT MOVES W OVER MOUNTAINOUS
TERRAIN.  EXPECTED TO BECOME REMNANT LOW PRES TONIGHT AS IT 
DISSIPATES.

LOW PRES 1007 MB AT 29N73W DRIFTING E COULD DEVELOP INTO 
TROPICAL CYCLONE WITHIN 36-48 HRS IF UPPER LEVEL CONDITIONS 
BECOME MORE FAVORABLE.  SHEAR FROM ABOVE MENTIONED UPPER TROUGH 
REMAINS ADVERSE TO INTENSIFICATION...NEVERTHELESS STRONG WINDS 
WITHIN 240 NM OF CENTER COULD HAVE BEEN OBSERVED

WITH CENTRAL ATLC RIDGE FORCED EASTWARD BY TROUGH...CARIBBEAN 
TRADES HAVE DIMINISHED AND ARE EXPECTED TO REMAIN LIGHT TO 
MODERATE THROUGH SAT.

WARNINGS...
ATLANTIC...NONE.

CARIBBEAN...NONE

GULF OF MEXICO...NONE.

FORECASTER WALLY BARNES