000
AXPZ20 KNHC 060321
TWDEP 

TROPICAL WEATHER DISCUSSION                                      
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
0405 UTC THU JUN 06 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0200 UTC.

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

MONSOON TROUGH FROM N COLOMBIA TO S NICARAGUA TO GUATEMALA WHERE 
IT LOSES IDENTITY. THE MONSOON TROUGH RESUMES OVER S MEXICO AT  
16N100W TO 11N110W TO 08N121W. ITCZ CONTINUES FROM 08N121W TO 
09N134W TO BEYOND 07N140W. SCATTERED MODERATE TO ISOLATED STRONG 
CONVECTION IS 05N TO 10N BETWEEN 78W AND 86W...FROM 08N TO 12N 
BETWEEN 92W AND 96W. WIDELY SCATTERED MODERATE CONVECTION IS 
FROM 09N TO 12N BETWEEN 102W AND 111W...AND FROM 07N TO 10N 
BETWEEN 135W AND 140W. 

...DISCUSSION...                                                

A SURFACE TROUGH IS OFF THE COAST OF CALIFORNIA FROM 32N126W TO 
27N130W. SCATTERED SHOWERS ARE WITHIN 120 NM OF THE TROUGH. 8 FT 
NORTHERLY SWELL ARE OVER THE NW CORNER OF THE FORECAST AREA NW 
OF LINE FROM 30N130W TO 25N140W.

IN THE TROPICS...THE MONSOON TROUGH EXTENDS FROM N COLOMBIA TO 
NICARAGUA TO GUATEMALA. 10-15 KT SOUTHERLY WINDS EXTEND FROM THE 
EQUATOR TO 10N E OF 110W. LONG PERIOD CROSS EQUATORIAL SWELL IS 
PROPAGATING NE INTO THE AREA. COMBINED SEAS HEIGHTS ARE 
PRESENTLY 8-11 FT. SEAS TO 8 FT WILL ARRIVE ALONG THE COAST OF 
CENTRAL AMERICA FROM COSTA RICA TO CENTRAL MEXICO TONIGHT...AND 
AS FAR N AS N BAJA CALIFORNIA PENINSULA THU EVENING... THEN 
SUBSIDE TO LESS THAN 8 FT BY FRI AFTERNOON. THE SW SWELL MAY 
CAUSE HAZARDOUS BREAKING SURF CONDITIONS ALONG EXPOSED REEFS AND 
COASTS. 

IN THE UPPER LEVELS...AN UPPER LEVEL LOW IS CENTERED NEAR 
33N128W. AN UPPER LEVEL HIGH IS CENTERED NEAR 20N114W. BOTH 
SYSTEMS HAVE STRONG UPPER LEVEL SUBSIDENCE. TWO MORE SMALL UPPER 
LEVEL LOWS ARE OVER THE TROPICS AT 3N122W AND 02S90W. UPPER 
LEVEL MOISTURE IS N OF 2N E OF 105W TO INCLUDE OVER CENTRAL 
AMERICA.

$$
FORMOSA