000
AXPZ20 KNHC 052200
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE FEB 05 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 05N77W TO 03N84W TO 07N86W TO 06N94W 
THEN ITCZ TO 05N140W.  NO SIGNIFICANT CONVECTION.

...DISCUSSION...
SHARP UPPER LEVEL TROUGH FROM 32N122W TO 10N130W ADVECT MOISTURE 
ALOFT INTO MEXICO AND BAJA CALIFORNIA RIDING ON WEAK 60 KT JET 
CORE WITHIN 8 DEGREES E OF AXIS.  REMAINDER OF BASIN REMAINS 
UNDER VERY DRY AND STABLE AIR MASS DUE TO MODERATE TO STRONG 
SUBSIDENCE ON BOTH SIDES OF UPPER LEVEL TROUGH. 

...AT THE LOWER LEVELS...    
HEALTHY HIGH PRES CENTER 1030 MB W OF AREA MOVE E TO 33N156W WED 
WITH RIDGE EXTENDING TO 15N107W.  RIDGE KEEP FRESH NE BREEZE W 
OF 136W FROM 20N TO 25N DIMINISHING TO MODERATE TRADES WED AS 
RIDGE MOVES E.  TRADES INCREASE BACK TO A FRESH BREEZE AS RIDGE 
INTENSIFIES FRI.  LARGE PORTION OF BASIN STILL UNDER INFLUENCE 
OF 8-10 FT NW SWELL LINGERING MAINLY W OF 110W.   

STORM CENTER WITH COLD FRONT JUST N OF AREA EXPECTED TO HAVE 
MINIMAL IMPACT ON BASIN AS ITS NEW SE OF NW SWELLS PROPAGATE S 
OVER WESTERN PORTION OF BASIN LATE THU.

$$
WALLY BARNES