000 AXPZ20 KNHC 260921 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Mar 26 2023 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 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 0855 UTC. ...SPECIAL FEATURES... Pacific Significant Swell Event: Combined seas of 10-13 ft are found over much of the tropical Pacific, mainly from 02N to 25N, west of 115W. These wave are a combination of the local wind seas due to fresh to strong NE to E winds, along with a component of longer period NW swell. The combined seas in this area will subside into Mon as winds diminish and swell decays. Farther to the northeast, fresh to strong northerly winds persist off Baja California Norte along with combined seas to 10-16 ft. Combined seas in excess of 12 ft are noted in the offshore waters north of Cabo San Lazaro, mainly beyond 60 nm off the coast. These combined seas will subside off Baja California through tonight as winds diminish and the swell decays. Please read the latest High Seas Forecast at https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more 18details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from the coast of NW Colombia near 07N77W to 07N89W to 06N100W. The ITCZ stretches from 06N100W to 01S120W and to beyond 02S140W. Scattered moderate convection is present from 00N to 11N and west of 110W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section for details on large swell off Baja California Norte. Fresh to strong northerly winds continue to affect the offshore waters of Baja California, with the strongest winds occurring north of 26N. Seas in these waters are 8-16 ft, with wave heights greater than 12 ft found north of 26N. Moderate to fresh northerly winds and seas of 5-8 ft are present in the southern Gulf of California and SW Mexican offshore waters. Elsewhere, including the Gulf of Tehuantepec, moderate or weaker winds and slight to moderate seas prevail. For the forecast, fresh to strong northerly winds will continue today in the offshore waters of Baja California. Large NW swell will also impact waters north of Punta Eugenia through late today. Winds and seas will diminish through Mon, as the high pressure dissipates ahead of the next low pressure system moving toward California. Wave heights will subside below 8 ft everywhere in Mexican waters by late Tue. Looking ahead, large swell will return to Baja California Norte offshore waters by late Thu associated with the remnants of the low pressure north of the area. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... High pressure north of the area continue to sustain fresh to strong easterly trade winds in Gulf of Papagayo waters, extending westward to 89W. Seas in these waters are 3-5 ft. Moderate or weaker winds and slight seas are prevalent in the rest of the forecast waters. For the forecast, fresh to strong gap easterly winds will pulse nightly across the Gulf of Papagayo and the coast of Nicaragua tonight through late next week. Seas will build to 7-8 ft by the middle of the workweek in this area. Gentle to moderate winds and slight seas will prevail elsewhere through the forecast period. REMAINDER OF THE AREA... Please see Special Features section above for details on a significant swell event. A recent scatterometer satellite pass indicate that fresh to strong easterly winds are occurring over much of the eastern Pacific waters, especially from the ITCZ to 25N and west of 115W. Seas in these waters are 8-13 ft, with seas greater than 12 ft noted from 06N to 17N and west of 122W. This was confirmed by the latest altimeter satellite pass. Fresh to strong northerly winds are found north of 25N and east of 130W, along with seas of 10-16 ft. The highest seas are occurring near 30N121W. Moderate or weaker winds and moderate seas prevail elsewhere in the basin. For the forecast, fresh to strong winds and rough to very rough seas will diminish late today as the high pressure weakens ahead of a cold front approaching from the northwest. Mainly gentle to moderate winds and slight to moderate seas will prevail elsewhere. The cold front is forecast to move eastward across the waters north of 25N Tue and Wed. Expect another group of large northerly swell associated with the front entering the waters north of 25N by late Thu. $$ DELGADO