000
AXPZ20 KNHC 300907
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON APR 30 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

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

MONSOON TROUGH EXTENDS FROM 07N90W TO 1010MB LOW PRES NEAR 
06N104W. ITCZ AXIS EXTENDS FROM LOW NEAR 06N104W TO 04N114W TO 
07N121W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS WITHIN 
120 NM OF MONSOON TROUGH BETWEEN 90W AND 100W. 

...DISCUSSION...

STATIONARY 1033 MB HIGH PRES IS CENTERED NEAR 34N147W WITH RIDGE 
EXTENDING SE TO NEAR 19N124W. THE PRESSURE GRADIENT ASSOCIATED 
WITH THIS AREA OF HIGH PRES IS RECEDING AWAY FROM THE W COAST OF 
BAJA CALIFORNIA AS THE HIGH SLOWLY SHIFTS W INTO THE CENTRAL 
PACIFIC. ASCAT SCATTEROMETER PASS AT 0625 UTC SHOWED AREA OF 20 
KT OR GREATER WINDS IS CONFINED TO A SHRINKING AREA NW OF A LINE 
FROM 30N120W TO 07N140W. MWW3P WAVE MODEL GUIDANCE AGREES CLOSELY
WITH JASON ALTIMETRY DATA WHERE SHIP OBS ARE LACKING...AND THIS 
ALSO INDICATES AREA OF SEAS 8 FT OR GREATER IS ALSO CONFINED TO 
A SHRINKING REGION IN NW PORTION OF DISCUSSION AREA. EXPECT THE 
TREND TO CONTINUE OVER THE NEXT 24-48 HOURS...WITH AREA OF 20 KT 
WINDS AND 8 FT SEAS FOUND IN A VERY SMALL AREA FROM 20N TO 25N W 
OF 130W BY EARLY WED AS THE HIGH WEAKENS AND THE PRES GRADIENT 
RELAXES ACROSS THE BASIN.

$$
MUNDELL