000
AXPZ20 KNHC 020918
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED OCT 02 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 9N84W TO 1009 MB LOW PRES 15N107W TO 10N130W 
TO 09N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 
100 NM EITHER SIDE OF AXIS FROM 105W-107W AND WITHIN 100 NM S OF 
AXIS FROM 130W-139W.

...DISCUSSION...

AN UPPER LEVEL TROUGH IS OVER THE FAR NW PORTION OF THE 
DISCUSSION AREA FROM 32N132W TO 29N140W. AN UPPER ANTICYCLONIC 
CIRCULATION IS CENTERED OFF THE COAST OF MEXICO NEAR 17N104W 
WITH AN UPPER RIDGE EXTENDING N INTO THE GULF OF CALIFORNIA. AN 
UPPER RIDGE ALSO EXTENDS S FROM THE ANTICYCLONE TO 4N103W. THESE 
UPPER FEATURES COMBINE TO DRY OUT THE MIDDLE AND UPPER LEVELS OF 
THE DISCUSSION AREA N OF 15N W OF 120W AND N OF 20N BETWEEN 110W 
AND 120W. IN THE DEEP TROPICS AN UPPER LEVEL CYCLONIC 
CIRCULATION IS CENTERED NEAR 4N117W. 

 A 1009 MB SURFACE LOW EMBEDDED IN THE MONSOON TROUGH IS NEAR 
15N107W. SCATTERED CONVECTION IS WITHIN 100 NM E SEMICIRCLE.

BROAD SURFACE RIDGE COVERS THE DISCUSSION AREA N OF 19N W OF 
112W. LARGE NW SWELLS HAVE PROPAGATED S INTO THE  AREA WITH SEA 
HEIGHTS OF 8-11 FT TO THE NW OF A LINE FROM 24N114W TO 15N120W 
TO 13N140W. THESE NW SWELLS WILL CONTINUE TO PROPAGATE SSE 
COVERING MOST OF THE DISCUSSION AREA N OF 10N W OF 112W WED 
NIGHT. THE SWELLS WILL THEN GRADUALLY SUBSIDE FROM W TO E 
BEGINNING ON FRI.
 
$$
DGS