000
AXPZ20 KNHC 191506
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
1605 UTC FRI JUL 19 2013

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.

...TROPICAL WAVES...                                            
A TROPICAL WAVE EXTENDS FROM 18N111W TO 12N115W MOVING W ABOUT 
10 KT. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE WITHIN 
90 NM W OF THE WAVE AXIS.  

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...        
MONSOON TROUGH 08N78W TO 09N97W TO 08N102W TO 10N110W. ITCZ FROM 
13N116W TO 13N120W TO 10N130W TO 11N140W. SCATTERED MODERATE 
FROM 03N TO 06N E OF 80W. ISOLATED STRONG FROM 06N TO 15N 
BETWEEN 93W TO 105W...AND FROM 08N TO 15N BETWEEN 112W AND 140W. 

...DISCUSSION...                                          
A SMALL UPPER LEVEL LOW IS CENTERED OVER THE NW CORNER NEAR 
23N130W WITH STRONG SUBSIDENCE. A LARGE UPPER LEVEL LOW IS 
CENTERED OVER NW MEXICO NEAR 30N111W. CONSIDERABLE UPPER LEVEL 
MOISTURE AND SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE N 
OF 24N BETWEEN 100W AND 115W TO INCLUDE THE GULF OF CALIFORNIA. 
ANOTHER UPPER LEVEL LOW IS CENTERED OVER THE TROPICAL PACIFIC 
NEAR 00N95W WITH STRONG SUBSIDENCE S OF 5N BETWEEN 80W-
105W...AND CONSIDERABLE UPPER LEVEL MOISTURE N OF 5N BETWEEN 80W-
105W TO INCLUDE CENTRAL AMERICA AND S MEXICO.
 
SURFACE RIDGE COVERS THE NW AREA N OF 20N W OF 120W. A SMALL 
AREA OF MIXED SW AND NE SWELL IS S OF THIS RIDGE FROM 15N TO 19N 
W OF 138W WITH SEAS TO 8 FT. THIS SWELL WILL DISSIPATE WITHIN 24 
HOURS TO WINDS 20 KT OR LESS WITH SEAS LESS THAN 8 FT. 

$$ 
FORMOSA