000
AXPZ20 KNHC 060950
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU SEP 06 2012

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS FROM 09N84W TO 11N91W TO 11N100W TO 10N115W 
07N122W TO 09N127W THEN ITCZ AXIS TO BEYOND 08N140W.  SCATTERED 
MODERATE CONVECTION WITHIN 240 NM S AND 90 NM N OF AXIS FROM 
107W TO 125W.

...DISCUSSION...
UPPER LEVEL CYCLONE AT 39N128W HAS TROUGH EXTEND SW TO 32N134W 
TO 20N140W KEEPING DRY SUBSIDING AIR MASS W OF 130W.  SECOND 
ILL-DEFINED CYCLONE NEAR 10N120W FORCES MODERATE DIVERGENCE OVER 
MONSOON TROUGH ENHANCING SCATTERED MODERATE CONVECTION BOTH 
SIDES OF AXIS FROM 107W TO 125W.  BROAD AND COMPLEX MID TO UPPER 
LEVEL RIDGE ACROSS MEXICO BRINGS ABUNDANT TROPICAL MOISTURE INTO 
BASIN E OF 128W.  SEA SURFACE TEMPERATURES REMAIN FAIRLY WARM 
AND ONLY A LACK OF LIFTING MECHANISMS PREVENT DEVELOPMENT OF 
TROPICAL SYSTEMS. 

ELSEWHERE AT LOWER LEVELS. 
LOW PRES CENTER...REMNANTS OF JOHN...AT 26N121W HAVE SURVIVED 
ENOUGH TIME UNDER SO HOSTILE ENVIRONMENT.  IT IS EXPECTED TO 
DISSIPATE BY FRI.  UNTIL THEN...FRESH TO STRONG NE BREEZE REMAIN 
WITHIN 120 NM NW QUADRANT. SECOND LOW PRES...REMNANTS OF ILEANA 
AT 17N132W ALSO EXPECTED TO DISSIPATE BY FRI.

BROAD HIGH PRES CENTER 1036 MB WELL N OF AREA HAS RIDGE EXTEND 
SE TO REACH 25N127.  AREA OF LONG PERIOD SWELLS SPREAD NW ACROSS 
EQUATOR AND AFFECT E PAC S OF 06N W OF 113W.  

$$
WALLY BARNES