000 AXPZ20 KNHC 260305 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 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 0000 UTC surface analysis and satellite imagery through 0305 UTC. ...SPECIAL FEATURES... Pacific Significant Swell Event: Combined seas of 10-13 ft are found over much of the tropical Pacific, mainly from 04N to 22N, 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, strong to near- gale force northerly winds persist off Baja California Norte along with combined seas to 10-16 ft. Reinforcing NW swell will allow combined seas to increase to as high 17 ft overnight, mainly to the northwest of Guadalupe Island, with combined seas in excess of 12 ft over offshore waters north of Cabo San Lazaro, mainly beyond 60 nm off the coast. These combined seas will subside off Baja California through Sun night 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 Panama near 08N78W to 05N89W to 06N100W. The ITCZ stretches from 06N100W to 07N117W to 04N130W and to beyond 03N140W. Scattered moderate convection is observed from 00N to 11N and west of 113N. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section for details on large swell off Baja California Norte. A tight pressure gradient persists off Baja California Norte due to lower pressures over Mexico and a strong high pressure system over the north Pacific. This weather pattern results in fresh to near gale-force northerly winds in the offshore waters of Baja California, with the strongest winds near 30N120W. Seas in these waters are 8-16 ft, with wave heights greater than 12 ft found north of 27N. Moderate to fresh northerly winds and seas of 5-8 ft are evident in the southern Gulf of California and SW Mexican offshore waters. Elsewhere, moderate or weaker winds and slight to moderate seas prevail. For the forecast, strong to near-gale force NW winds will continue off Baja California Norte overnight, between low pressure over central Mexico and strong high pressure over the northeast Pacific. Large NW swell will also impact waters north of Punta Eugenia through late Sun. 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... Fresh to strong easterly trade winds are affecting the Gulf of Papagayo waters, extending westward to 88W. Seas in these waters are 2-4 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 to 8 ft by the middle of next week 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 tight pressure gradient over the northeast waters result in strong to near gale-force northerly winds. Seas in these waters are 10-16 ft, with the highest seas occurring near 30N121W. Fresh to strong easterly winds are found in most of the rest of the eastern Pacific, especially north of the ITCZ and west of 110W. Seas in the waters described are 8-12 ft. Moderate or weaker winds and moderate seas prevail elsewhere in the basin. For the forecast, the area of fresh to near gale-force winds and rough to very rough seas will diminish late this weekend 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