000
AXPZ20 KNHC 191513
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC SUN APR 19 2015

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 ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC. 
 
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...              

ITCZ FROM 5N103W TO 3N115W TO 5N125W TO 3N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION FROM 2N-5N BETWEEN 122W-132W.

...DISCUSSION... 

AN UPPER LEVEL TROUGH ACROSS THE NW PORTION OF THE AREA EXTENDS 
FROM 32N126W TO 20N140W. A 95-120 KT JETSTREAM IS SE OF THE 
TROUGH FROM 19N137W TO CENTRAL BAJA CALIFORNIA. STRONG 
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER 
LEVELS IS NW OF A LINE 14N140W TO 3N115W. SW WINDS E OF THE 
TROUGH IS ADVECTING MIDDLE AND UPPER LEVEL MOISTURE INTO 
SOUTHERN BAJA CALIFORNIA AND CENTRAL MEXICO. IN THE DEEP TROPICS 
AND UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 
11N117W WITH A RIDGE NE INTO SOUTHERN MEXICO. 

A SURFACE RIDGE IS ACROSS THE AREA N OF 15N W OF 115W. THE PRES 
GRADIENT BETWEEN THE RIDGE AND THE ITCZ IS PRODUCING ELY TRADES 
15-20 KT WITH SEAS 8-9 FT FROM 9N-15N W OF 113W.

$$
DGS