000 AXPZ20 KNHC 160735 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Mar 16 2025 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 0700 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure building into northeast Mexico in the wake of a cold front will lead to gale- force gap winds in the Gulf of Tehuantepec tonight into early Tue morning. Seas will rapidly build and exceed 12 ft in this area late tonight. Conditions will improve Tue night as the high pressure weakens and moves east. Please read the latest High Seas Forecast issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from 06N77W to 02N90W. The ITCZ extends from 02N90W to 00N140W. Convection previously along the monsoon trough has dissipated overnight. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See Special Features section above for information on a Gale Warning for the Gulf of Tehuantepec. Moderate to fresh N winds are ongoing off Baja California and the Gulf of California, extending southward to Cabo Corrientes. Seas in offshore waters southward to Jalisco and Colima are 8 to 11 ft, with 4 to 7 ft seas in the central and southern Gulf of California, and 2 to 4 ft seas in the northern Gulf. Gentle breezes are noted farther south with 4 to 7 ft primarily in NW swell. For the forecast, rough seas in NW swell will continue offshore Baja California and the Revillagigedo Islands, before decaying early the week. Strong winds may pulse near the coasts of Baja California, Cabo Corrientes, and in the Gulf of California through tonight as another area of high pressure builds southward from the southwest United States. Looking ahead, more gale force gap winds may develop in the Gulf of Tehuantepec Thu. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Light to gentle winds and seas of 3 to 5 ft prevail across the waters as a weak pressure pattern resides over the waters. Moderate NW swell to the W and SW of the Galapagos Islands is causing some 6 to 7 ft seas. For the forecast, over most waters gentle winds and slight to moderate seas will prevail early this week. Pulsing fresh to strong N to E winds will develop in the Gulf of Papagayo and Gulf of Panama Mon night, then prevail at least through the middle of the week. Elsewhere, rough seas generated by gale force winds in the Gulf of Tehunatepec will impact areas well offshore Guatemala Mon and Tue. ...REMAINDER OF THE AREA.... A 1023 mb high is centered near 28N137W, extending ridging through the eastern Pacific waters north of 20N. This pattern is supporting moderate to fresh trade winds west of 115W S of 20N extending to the ITCZ. Light to gentle breezes are noted elsewhere. Combined seas are 7 to 11 ft north of the ITCZ and west of 115W, primarily in NW swell. Combined seas of 5 to 7 ft persist elsewhere. For the forecast, rough seas in excess of 8 ft will propagate southeastward through tonight while gradually decaying below 8 ft. Moderate to fresh trade winds will prevail between 05N and 25N west of 115W early this week. A cold front will move across the waters north of 20N today through Tue, leading to fresh N to NE winds and large NW swell. $$ Konarik
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