000
AXPZ20 KNHC 041523
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS 8N83W 5N115W 3N120W. ITCZ AXIS 3N120W 
2N130W. SCATTERED MODERATE TO STRONG CONVECTION WITHIN 180 NM S 
OF AXIS FROM 90W-112W.

DISCUSSION...
BROAD UPPER LEVEL RIDGE IS ACROSS THE DISCUSSION AREA W OF 120W. 
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 5N120W. 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 32N119W TO 28N140W. N-NE WINDS WITH SEAS 
TO 12 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 
10N-21N W OF 135W. OTHERWISE LARGE NW SWELLS ARE ACROSS THE AREA 
W OF AROUND 110W...WITH SEAS UP TO 10 FT.

$$
DGS