000
AXPZ20 KNHC 040306
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

TROUGH FROM 07N83W TO 01N92W TO 03N104W. SCATTERED MODERATE FROM 
04N TO 08N BETWEEN 80W AND 85W...AND FROM 01N TO 04N BETWEEN 92W 
AND 101W.

ITCZ AXIS EXTENDS FROM 08N114W TO 03N140W. SCATTERED MODERATE 
FROM 05N TO 09N BETWEEN 120W AND 124W.

DISCUSSION...

A LONGWAVE UPPER LEVEL TROUGH IS N OF 26N W OF 130W MOVING E AND 
SUPPORTING A SURFACE COLD FRONT. AN UPPER LEVEL RIDGE IS FURTHER 
E N OF 25N BETWEEN 110W AND 130W. A SMALL UPPER LEVEL LOW IS 
CENTERED OVER THE TROPICS NEAR 17N125W. ZONAL FLOW IS OVER THE 
REMAINDER OF THE TROPICAL PACIFIC.   

A 1034 MB HIGH IS CENTERED NEAR 40N157W. A COLD FRONT HAS 
RECENTLY ENTERED THE AREA NEAR 30N134W TO 28N140W. SCATTERED 
SHOWERS ARE WITHIN 90 NM OF THE FRONT MOVING E AND WEAKENING. 
EXPECT THE FRONT TO EXTEND IN 24 HOURS FROM 30N117W TO 23N130W 
TO 25N140W WITH SHOWERS. ALSO EXPECT THE FRONT TO BE DISSIPATING 
IN 48 HOURS FROM 30N114W TO 23N120W TO 21N130W. WINDS N OF THE 
FRONT ARE 20 KT WITH NW SWELL 10 TO 13 FT. FURTHER SE...AN OLDER 
SWELL TRAIN HAS PRODUCED NW SWELL 8 TO 12 FT TO AS FAR E AS 105W 
S OF MEXICO. THIS SWELL TRAIN WILL GO DOWN TO 8 FT OVER THE NEXT 
48 HOURS.         

$$
FORMOSA