000
AXPZ20 KNHC 030926
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU OCT 03 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

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

MONSOON TROUGH FROM 10N85W TO 10N95W TO 1008 MB LOW PRES NEAR 
13N108W TO 1010 MB LOW PRES 11N132W. ITCZ FROM 11N132W TO 
10N140W. SCATTERED MODERATE TO STRONG CONVECTION FROM 7N-13N 
BETWEEN 87W-92W AND WITHIN 120 NM N OF AXIS FROM 108W-110W. 

...DISCUSSION...

AN UPPER LEVEL TROUGH IS OVER THE N PORTION OF THE DISCUSSION 
AREA FROM 32N122W TO 26N135W TO 28N140W. AN UPPER LEVEL 
ANTICYCLONIC CIRCULATION IS CENTERED OFF THE COAST OF MEXICO 
NEAR 20N108W WITH AN UPPER RIDGE EXTENDING NE INTO NORTHERN 
MEXICO TO THE TEXAS BIG BEND. AN UPPER RIDGE ALSO EXTENDS SW 
FROM THE ANTICYCLONE TO 10N125W. THESE UPPER FEATURES COMBINE TO 
DRY OUT THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE N OF 15N W 
OF 125W AND N OF 20N BETWEEN 117W AND 125W. IN THE DEEP TROPICS 
AN UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 12N130W. 

A 1008 MB SURFACE LOW EMBEDDED IN THE MONSOON TROUGH IS NEAR 
13N108W. SCATTERED CONVECTION IS WITHIN 120 NM NW QUADRANT.

BROAD SURFACE RIDGE COVERS THE DISCUSSION AREA N OF 15N W OF 
112W. LARGE NW SWELLS ACROSS MUCH OF THE AREA N OF AROUND 10N W 
OF 112W WITH SEA HEIGHTS OF 8-11 FT. THESE NW SWELLS WILL 
CONTINUE TO PROPAGATE SSE COVERING MOST OF THE DISCUSSION AREA 
BETWEEN 110W AND 135W THU NIGHT. THE SWELLS WILL THEN GRADUALLY 
SUBSIDE FROM W TO E BEGINNING ON FRI NIGHT.

$$
DGS