000
AXPZ20 KNHC 232128
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT SEP 23 2006

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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2045 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE...7N78W 8N100W 12N125W 8N140W. 
SCATTERED MODERATE 120 NM WIDE 133W TO 140W. 

TROPICAL LOWS...
LOW PRES 1007 MB AT 17N106W DRIFTING W.  ISOLATED CONVECTION 
WITH THIS WEAK SYSTEM. UPPER-LEVEL WINDS ARE NOT CONDUCIVE 
FOR SIGNIFICANT DEVELOPMENT.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM 32N124W TO A CYCLONIC VORTEX 
28N129W AND TO 17N130W.  DRY CONDITIONS CONTINUE WITHIN 250 NM 
OF THE AXIS. A  RIDGE EXTENDS FROM 11N140W TO  CENTRAL MEXICO. 
RIDGE IS EXTENSIVE MOISTURE INTO THE AREA FROM CARIBBEAN AND 
SOUTH AMERICA.

ON THE SURFACE...PAC HIGH PRES 1033 MB RIDGE N OF AREA EXTENDS 
AS FAR AS 20N110W...DENTED ONLY BY LOW PRES MENTIONED ABOVE. 
N WIND ON E SIDE OF RIDGE HAS LONG ENOUGH FETCH TO BRING LARGE 
SWELLS INTO E PAC BASIN N OF 24N.  SWELLS ABATE WITHIN 48 HRS AS 
RIDGE DRIFT E CUTTING OFF LONG FETCH.  


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WALLY BARNES