000
AXPZ20 KNHC 150952
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN APR 15 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...

THE INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 05N116W TO 
03N125W TO 01N140W. SCATTERED MODERATE AND ISOLATED STRONG 
CONVECTION IS WITHIN 90-120 NM N OF THE AXIS BETWEEN 117W AND 
122W. SIMILAR CONVECTION IS WITHIN 75 NM N OF THE AXIS BETWEEN 
124W AND 131W.

...DISCUSSION...

1030 MB SURFACE HIGH PRES IS CENTERED NEAR 32N132W WITH A RIDGE 
AXIS EXTENDING SE TO NEAR 18N110W. THIS HIGH/RIDGE COMBINED WITH 
DEEP SURFACE LOW PRES OVER INTERIOR MEXICO IS INDUCING A TIGHT 
PRES GRADIENT OVER THE BAJA CALIFORNIA REGION INCLUDING THE GULF 
OF CALIFORNIA WHERE FRESH NW-N WINDS EXIST. THE PRES GRADIENT 
WILL WEAKEN SLIGHTLY W OF THE PENINSULA DURING THE NEXT 24-48 
HOURS ALLOWING FOR WINDS TO DIMINISH W OF THE PENINSULA.

FRESH TRADES PERSIST ACROSS THE WATERS FROM 06N TO 25N W OF 130W 
AND FROM 06N TO 16N BETWEEN 115W AND 130W AS INDICATED BY A 
RECENT 0634 UTC ASCAT SCATTEROMETER PASS. THESE WINDS ARE A 
RESULT OF THE ABOVE MENTIONED RIDGING AND LOWER PRES JUST TO THE 
S ASSOCIATED WITH THE ITCZ. THESE WINDS WILL NOT CHANGE MUCH IN 
STRENGTH OR AREAL COVERAGE DURING THE NEXT 48 HOURS.

MEANWHILE LARGE NW SWELL OF 8-13 FT COVERS THE WATERS W OF A 
LINE FROM 21N110W TO 00N120W. THIS SWELL WILL GRADUALLY DECAY TO 
8-11 FT BY SUN NIGHT...THEN TO 8-10 FT BY MON NIGHT.

$$
LEWITSKY