000
AXPZ20 KNHC 042201
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED APR 04 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...MONSOON 
TROUGH AXIS FROM 07N82W TO 03N90W TO 03N100W TO 05N114W. ITCZ 
AXIS FROM 05N114W TO 04N130W TO 03N140W. SCATTERED MODERATE TO 
STRONG CONVECTION IS FROM 01N TO 08N BETWEEN 78W AND 90W. 
SCATTERED MODERATE CONVECTION IS FROM 02N TO 06N BETWEEN 102W 
AND 107W. 

DISCUSSION...
BROAD UPPER LEVEL RIDGE IS ACROSS THE DISCUSSION AREA W OF 125W. 
MODERATE TO STRONG SUBSIDENCE WITH DRY/STABLE AIR AT THE MIDDLE 
AND UPPER LEVELS IS S OF 27N W OF 120W. UPPER LEVEL CYCLONIC 
CIRCULATION IS CENTERED NEAR 18N116W WITH TROUGH FROM THE 
CIRCULATION TO 5N115W. UPPER LEVEL RIDGE EXTENDS FROM THE 
NORTHERN GULF OF CALIFORNIA TO 12N102W. UPPER LEVEL DIFFLUENT 
FLOW IS ENHANCING CONVECTION S OF 10N E OF 110W.

COLD FRONT EXTENDS FROM 30N120W TO 27N140W. N-NE WINDS WITH SEAS 
TO 11 IN NW SWELL W OF THE FRONT. THE FRONT WILL WEAKEN AND MOVE 
INLAND THU. HIGH PRES RIDGE IS PRODUCING TRADES TO 20 KT FROM 
05N-15N W OF 137W. OTHERWISE LARGE NW SWELLS FROM A PREVIOUS 
SWELL TRAIN ARE ACROSS THE AREA W OF AROUND 100W...WITH SEAS UP 
TO 10 FT.

$$
FORMOSA