000 AXPZ20 KNHC 050305 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Thu Dec 5 2024 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... Gulf of Tehuantepec Gale Warning: The pressure gradient between high pressure over NE Mexico and lower pressure south of Mexico will continue to produce gale-force N-NE winds in the Gulf of Tehuantepec region through Fri morning. There may be some occasional gusts to gale-force during Fri afternoon and night. Thereafter, strong N-NE gap winds will occur into early Sun. Rough seas will persist into the weekend. Please read the latest High Seas Forecast issued by the National Hurricane Center at the website- https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from the coast of Costa Rica near 08N83W to 06N90W. The ITCZ stretches from 06N90W to 09N115W and to beyond 08N140W. Scattered moderate convection is observed from 05N to 08N and between 88W and 96W, from 04N to 08N and between 102W and 111W, from 06N to 10N and between 114W and 119W and from 06N to 11N and west of 127W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section above for information on an ongoing gale-force gap wind event in the Gulf of Tehuantepec region. A subtropical ridge located well west of southern California extends southeastward to the Revillagigedo Islands, sustaining moderate to locally fresh NW-N winds and seas of 5-7 ft across the offshore waters of Baja California. Moderate NW winds and seas of 3-5 ft are occurring in the southern portion of the Gulf of California, while light to gentle winds and slight seas prevail in the rest of the Gulf. Elsewhere in the Mexican offshore waters, excluding the Gulf of Tehuantepec, moderate or weaker winds moderate seas are prevalent. For the forecast, aside from the ongoing gale-force winds in the Gulf of Tehuantepec region, high pressure over the eastern Pacific will continue to support mainly moderate NW-N winds and moderate seas across the remainder of the Mexico offshore waters for the rest of the week. Winds will diminish this weekend. Long- period northwest swell is forecast to enter the waters north of Punta Eugenia early next week, resulting in seas to near 10 ft. Meanwhile, winds may increase to strong force along the entire length of the Gulf of California by Tue. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR...Updated A 1027 mb high pressure system situated over northern Florida continues to force fresh to strong NE winds across the Gulf of Papagayo region and downstream waters to 91W. Seas in these waters are 6-9 ft. Meanwhile, moderate to locally S-SW winds and seas of 4-6 ft are noted south of the monsoon trough. Elsewhere, light to gentle winds and slight to moderate seas are evident. For the forecast, strong high pressure north of the area will support fresh to strong NE winds across the Papagayo region into this weekend. Locally rough seas in NE swell associated with these winds will continue into Thu. Farther west, rough seas induced by gale-force winds in the Gulf of Tehuantepec will continue through early Fri. Moderate to locally fresh NE winds will pulse across the remainder of the Central American waters through Thu. Otherwise, light to gentle southwest to west winds along with moderate seas are expected south of the monsoon trough going into the weekend, with the exception of moderate southwest winds and moderate seas offshore Colombia south of 05N through Sat. ...REMAINDER OF THE AREA... A subtropical ridge centered north of the area supports moderate to locally fresh easterly trade winds south of 25N to the ITCZ. Seas in these waters are 6-9 ft. The strongest winds and highest seas are occurring in the western waters. Elsewhere, moderate or weaker winds and moderate seas prevail. For the forecast, little change is expected in the western part of the area through the end of the week. In the eastern waters, fresh to strong N-NE winds and rough seas will continue to spread downstream from the Gulf of Tehuantepec and Gulf of Papagayo. A new set of long-period NW swell is forecast to enter the NW part of the area this weekend. Otherwise, high pressure will dominate the eastern Pacific, supporting moderate to locally fresh trades and moderate seas through the rest of the week. $$ Delgado