000
AXPZ20 KNHC 031000
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE DEC 03 2013

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 EXTENDS FROM 10N85W TO EMBEDDED 1010 MB SURFACE
LOW PRES AT 08N110W TO 07N1193W.  ITCZ EXTENDS FROM 14N127W TO  
08N138W TO BEYOND 08N140W. ISOLATED MODERATE CONVECTION WITHIN
60 NM OF AXIS E OF 94W.  SCATTERED MODERATE ISOLATED STRONG
CONVECTION WITHIN 90 NM OF AXIS FROM 111W TO 114W.  

...DISCUSSION...
DEEP LAYER WELL DEFINED CYCLONE AT 24N132W REACHES SURFACE AS
STATIONARY LOW PRES 1010 MB AT 22N134W.  DOWNSTREAM FROM CYCLONE
WEAKENING 90 KT SW JET CORE ADVECTS TROPICAL MOISTURE NE TOWARDS
SOUTHERN CALIFORNIA AND NORTHWESTERN MEXICO.  FURTHER E...BROAD
MID TO UPPER LEVEL ANTICYCLONE AT 16N103W MAINTAINS DRY SUBSIDING
AIR MASS S OF 20N E OF 110W.  BARELY MINOR MODERATE CONVECTION 
NOTED WITHIN 60 NM OF MONSOON TROUGH AXIS E OF 94W.  

...AT THE SURFACE...
VIGOROUS BUT WEAKENING HIGH PRES CENTER 1028 MB AT 38N141W 
TIGHTENS PRES GRADIENT WITH NW OF AFOREMENTIONED LOW PRES
PROMPTING FRESH NE WINDS IN NW QUADRANT OF LOW PRES.  WINDS
DIMINISH AS HIGH PRES WEAKEN TO A MODERATE BREEZE LATE TUE...BUT
THEN INCREASE AGAIN AS SECOND STRONGER HIGH PRES BUILDS JUST N
OF BASIN.  SECOND HIGH PRES MOVES OVER NW PORTION OF E PAC WITH
SURFACE RIDGE EXTENDING MAINLY N OF 15N.  

$$
WALLY BARNES