000
AXPZ20 KNHC 080916
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT SEP 08 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 ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON FROM 12N86W TO 1011 MB LOW PRES 11N95W TO 10N115W  
11N122W. ITCZ FROM 5N134W TO 5N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WITHIN 100 NM S OF AXIS FROM 86W-100W.
 
...DISCUSSION...
LARGE UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 
22N114W...WITH RIDGE FROM THE CIRCULATION SW TO 13N138W. STRONG 
SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS 
N OF 15N W OF 125W AND NEAR THE ANTICYLONE. THE UPPER LEVELS ARE 
SLIGHTLY DIFFLUENT OVER THE DEEP TROPICS AND IS SUPPORTING THE 
CONVECTION ALONG THE MONSOON TROUGH FROM 86W TO 100W.

A WEAK 1015 MB LOW...REMNANT OF TROPICAL CYCLONE JOHN...IS NEAR 
26N121W BUT LACKS ANY SIGNIFICANT WEATHER. A SURFACE RIDGE IS N 
OF 20N AND W OF 125W. TROUGH IS ANALYZED BETWEEN THE MONSOON 
TROUGH AND ITCZ AXIS FROM 12N125W 7N132W. A FEW SHOWERS ARE 
ALONG THE TROUGH AXIS. CROSS EQUATORIAL SE SWELL WITH SEAS TO 8 
FT IS NOTED S OF 03N BETWEEN 120W AND 135W BUT IS EXPECTED TO 
SUBSIDE BELOW 8 FT LATER TODAY SAT.

$$
DGS