000 AXPZ20 KNHC 300924 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 1005 UTC MON SEP 30 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 15N93W TO LOW PRES NEAR 11N101W TO LOW PRES NEAR 13N110W TO 9N129W. ITCZ FROM 9N129W TO 9N140W. SCATTERED MODERATE TO STRONG CONVECTION WITHIN 120 NM OF CENTRAL AMERICA BETWEEN 80W-85W. SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 8N-13N BETWEEN 100W-105W AND WITHIN 90 NM S OF AXIS FROM 135W-137W. ...DISCUSSION... AN UPPER LEVEL CYCLONE IS OVER THE NW PORTION OF THE DISCUSSION AREA NEAR 30N132W WITH AN UPPER TROUGH AXIS EXTENDING SW FROM THE CYCLONE TO 28N140W. ANOTHER UPPER LEVEL CYCLONE IS OBSERVED OVER THE DEEP TROPICS NEAR 6N137W. AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS W OF THE SOUTHERN PORTION OF THE BAJA CALIFORNIA PENINSULA NEAR 24N116W...WITH AN UPPER RIDGE AXIS EXTENDING TO THE SW-W AT 17N140W. AN UPPER RIDGE ALSO EXTENDS S-SW FROM THE ANTICYCLONE TO 11N121W. CONVECTIVE DEBRIS MOISTURE IS BEING ADVECTED TO THE SW ON THE S SIDE OF THE UPPER LEVEL RIDGE. STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N OF 15N W OF 115W. NW SWELL HAS MOVED INTO THE FAR NW PORTION OF THE AREA WITH 8-10 FT SEAS. THE SWELL WILL SPREAD S COVERING THE AREA N OF A LINE FROM 30N116W TO 25N120W TO 22N140W TONIGHT...CONTINUING TO PROPAGATE TO THE SE AND COVERING THE AREA N OF 14N W OF 114W TUE NIGHT. SEVERAL WEAK AREAS OF LOW PRES ARE EMBEDDED IN THE CENTRAL PORTION OF THE MONSOON TROUGH...HOWEVER ASSOCIATED WINDS ARE ONLY LIGHT TO MODERATE WITH SEAS LESS THAN 8 FT. CONVECTION NEAR ALL THREE LOWS IS SPARSE AND DISORGANIZED. NO DEVELOPMENT OF ANY OF THESE LOW IS ANTICIPATED THROUGH 48 HOURS. $$ DGS