000
AXPZ20 KNHC 130241
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI APR 13 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 
0230 UTC.

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

ITCZ EXTENDS FROM 04N107W TO 05N120W TO 03N132W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...

A BROAD MIDDLE/UPPER LEVEL TROUGH COVERS THE DISCUSSION AREA N 
OF ABOUT 20N E OF 140W WITH THE STRONGEST WESTERLY WINDS...TO 80 
KNOTS...LOCATED N OF 27N E OF 130W INTO BAJA CALIFORNIA. AT THE 
SURFACE A COLD FRONT IS LOCATED THROUGH 32N125W TO 30N132W WITH 
A PRE-FRONTAL TROUGH LOCATED FROM 32N122W TO 27N130W. IN THE 
AREA N OF 28N W OF 120W WINDS ARE LESS THAN 20 KT WITH SEAS TO 9 
FT IN NW SWELL. WATER VAPOR IMAGERY REVEALS STRONG SUBSIDENCE 
FROM 18N TO 25N FROM THE COAST OF MEXICO TO WELL BEYOND 140W. 

MODERATE WESTERLY WINDS ALOFT ARE LOCATED FROM ABOUT 12N TO 20N 
BETWEEN 110W AND 140W. IN THE AREA FROM 05N TO 20N W OF 115W 
WINDS ARE NE WINDS 20 KT WITH SEAS 8 TO 11 FT IN MIXED NW AND NE 
SWELL. ELSEWHERE S OF 20N W OF 110W WINDS ARE LESS THAN 20 KT 
WITH SEAS TO 9 FT IN MIXED SW AND NW SWELL. WINDS ALOFT ARE 
GENERALLY LIGHT E OF 100W INTO CENTRAL AND SOUTH AMERICA. AT THE 
SURFACE A TROUGH IS LOCATED FROM 04N89W TO 02N100W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION IS LOCATED WITHIN A 90 NM 
RADIUS OF 01.5N99W. 

$$
CAB