000
AGXX40 KNHC 251818
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
215 PM TUE JUL 25 2006

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

UPPER LEVELS...
STATIONARY RIDGE ACROSS GULF OF MEXICO AND SW N ATLC LITERALLY 
BLOCKED ANY SE MOTION OF UPPER LEVEL TROUGH NOW ACROSS SE 
STATES.  WEAK SHORT WAVE CLOSE TO 32N75W SLIGHTLY ERODES NRN 
FRINGES OF RIDGE THU BUT IT REBUILDS BY SAT AND SUN.

UPPER LEVEL TROUGH SE OF RIDGE EXTENDS 27N65W ACROSS SRN BAHAMAS 
...ERN CUBA TO NE NICARAGUA.  VERY DRY AIR MASS WITHIN 240 NM OF 
TROUGH AXIS KEEPS WRN CARIBBEAN FREE FROM CONVECTION EXCEPT 
EXTREME SW CARIBBEAN S OF 12N W OF 78W WHERE TROPICAL WAVE WITH 
PLENTY OF DIFFLUENCE ALOFT HAS PROMPTED NUMEROUS TSTMS. 

REMAINDER CARIBBEAN BASIN AND TROPICAL N ATLC ARE UNDER SECOND 
UPPER LEVEL RIDGE INFLUENCE WITH SUPPRESSED CONVECTION IN SPITE 
OF TROPICAL WAVE ALONG 70W.    

SURFACE...
VERY TIGHT GRADIENT BETWEEN SW N ATLC RIDGE AND LOW PRES OVER 
COLOMBIA HAS PROMPTED GALE FORCE WINDS DECREASING QUICKLY AND 
EXPECTED TO BE BELOW GALE CRITERIA...ALTHOUGH STILL STRONG...BY 
18Z. 

GULF OF MEXICO...LOW PRES JUST INLAND NE MEXICO CONTINUES 
CAUSING STRONG WINDS AND NUMEROUS STRONG CONVECTION WITH LOCALLY 
HIGH SEAS.  LOW PRES EXPECTED TO MOVE N IMPROVING CONDITIONS 
OVER WRN GULF BY WED.

STRONG TROPICAL WAVE ALONG 52W TO ENTER TROPICAL N ATLC WED 
INCREASING NE WINDS N OF 15N WED NIGHT THROUGH FRI.  

.WARNINGS...

ATLC...NONE.

CARIBBEAN...GALE WARNING EXPIRE 26/18Z...AMZ084 AND AMZ086. 

GULF OF MEXICO...NONE.

FORECASTER WB/GR