000 AXPZ20 KNHC 121543 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 1605 UTC TUE APR 12 2016 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1530 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 08N85W TO 04N97W...WHERE THE ITCZ BEGINS AND EXTENDS TO 08N105W TO 03N125W TO BEYOND 02N140W. SCATTERED MODERATE CONVECTION IS FROM 03N TO 08N BETWEEN 82W AND 96W...FROM 06N TO 16N BETWEEN 110W AND 125W...AND FROM 02N TO 06N BETWEEN 125W AND 138W. ...DISCUSSION... NW SWELL OF 8 TO 10 FT IS PROPAGATING THROUGH THE NW WATERS AND WILL CONTINUE SE THROUGH MID-WEEK AS IT MERGES WITH TRADE WIND GENERATED SWELL TO THE SOUTH. A 1030 MB HIGH IS CENTERED NEAR 35N144W WITH A RIDGE AXIS THAT EXTENDS SE TO NEAR 18N108W. THE PRESSURE GRADIENT BETWEEN THIS RIDGE AND LOWER PRESSURE ASSOCIATED WITH THE ITCZ SUPPORTS FRESH TO LOCALLY STRONG TRADE WINDS FROM 04N TO 25N W OF 115W...WITH THE STRONG WINDS LOCATED FROM 12N TO 17N BETWEEN 121W AND 131W. THE TRADES SUPPORT SEAS OF 8 TO 11 FT. THESE TRADES AND ASSOCIATED SEAS WILL CONTINUE THROUGH THE WEEK. HIGH PRESSURE OVER THE CENTRAL PAC WILL SLIDE EAST AND MERGE WITH THE EXISTING RIDGE LATER THIS WEEK...BEFORE THIS MERGED HIGH CENTER APPROACHES 35N140W ON THU. MEANWHILE...LOW PRESSURE WILL DIVE SE AND OVER THE WESTERN UNITED STATES. THE PRESSURE GRADIENT BETWEEN THESE TWO FEATURES WILL SUPPORT STRONG NW WINDS E OF 122W TO THE COAST OF BAJA CALIFORNIA NORTE WITH COMBINED SEAS BUILDING TO 11 FT THU AFTERNOON...PEAKING AROUND 16 FT FRI AFTERNOON...BEFORE SUBSIDING OVER THE WEEKEND. MODELS ARE FORECASTING ACTIVE CONVECTION TO CONTINUE FROM 03N TO 10N IN THE VICINITY OF THE ITCZ AND WEAK TROUGHING THAT MAY PERIODICALLY DEVELOP ALONG THE ITCZ THROUGH THE PERIOD. $$ LATTO