000 AXPZ20 KNHC 230931 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 1005 UTC SUN MAR 23 2014 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... THE ITCZ EXTENDS FROM 02N91W TO 03N97W TO 01S113W TO 04N131W TO 02N140W. NO SIGNIFICANT CONVECTION WAS NOTED. ...DISCUSSION... HIGH PRESSURE OF 1025 MB IS CENTERED N OF THE AREA NEAR 34N131W WITH RIDGE EXTENDING SE TO NEAR 18N109W. THE PRESSURE GRADIENT BETWEEN THE HIGH PRESSURE CENTER AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ IS SUPPORTING MODERATE TO FRESH TRADES W OF 115W AND N OF THE ITCZ TO 20N. THE HIGH PRESSURE CENTER WILL DRIFT SOUTHWARD INTO THE FORECAST AREA OVER THE NEXT 48 HOURS WHILE WEAKENING. THIS SOUTHWARD SHIFT WILL BRING THE HIGH PRESSURE CENTER TO A CLOSER PROXIMITY TO THE ITCZ. THIS WILL INCREASE COVERAGE OF FRESH TRADES AND MAY ALSO BRIEFLY PRODUCE A SMALL AREA OF STRONG TRADES LATE MON NIGHT. NW SWELL IS MIXING WITH SHORT PERIOD NE TRADEWIND SWELL TO PRODUCE COMBINED SEAS OF 8 FT FROM 08N TO 13N W OF 120W. COMBINED SEAS IN THE 7 TO 8 FT RANGE WILL CONTINUE OVER THIS AREA OVER THE NEXT COUPLE OF DAYS. NW SWELL WITH SEAS TO 8 FT IS ALSO AFFECTING THE FAR NW WATERS NW OF LINE FROM 30N131W TO 26N140W. SEAS WILL SUBSIDE BELOW 8 FT OVER THIS AREA BY THIS EVENING. ANOTHER SET OF NW SWELLS WITH COMBINED SEAS 8 FT OR GREATER WILL MOVE INTO THE NW PART OF THE FORECAST AREA MON EVENING...WITH SEAS REACHING 11 FT BY LATE MON NIGHT. GAP WINDS... PULSING OF WINDS THROUGH THE GULF OF PAPAGAYO WILL CONTINUE OVER THE NEXT COUPLE OF DAYS. WINDS WILL PEAK NEAR 25 KT DURING THE LATE NIGHT AND EARLY MORNING HOURS WITH NOCTURNALLY DRIVEN DRAINAGE FLOW. WINDS WILL DIMINISH TO 20 KT OR LESS BY THE LATE AFTERNOON AND EARLY EVENING HOURS. $$ AL