926 AXPZ20 KNHC 262128 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Sun Nov 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 1800 UTC surface analysis and satellite imagery through 2110 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure building across the eastern slopes of Mexico will help tighten the pressure gradient across the Tehuantepec area through early this week. Strong to near gale force N winds will begin tonight and last through Wed. Within that time period, gale force N winds are also expected from Mon night through Tue night. Seas will peak near 12 ft with this upcoming event. 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 extends from 09N84W to 10.5N113W to 08.5N121W. The ITCZ continues from 08.5N121W to 07N140W. Scattered moderate isolated strong convection is noted from 10.5N to 17N between 97.5W and 110W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see above for more on an upcoming Gulf of Tehuantepec gale-force gap wind event. Recent ASCAT satellite data from 26/1702 UTC showed strong to near gale force NNW winds in the northern Gulf of California, north of 30N and west of 113.5W. Seas are likely 5 to 6 ft in the area. Gentle to moderate winds are occurring to the south of 20N, as well as over the southern Gulf of California. Light to gentle and variable winds prevail to the west of Baja California. Seas are 8-10 ft in NW swell to the west of Baja California. Seas are 1-3 ft over the southern half of the Gulf of California. Seas of 4-6 ft prevail elsewhere offshore Mexico. For the forecast, the strong NW to N winds over the northern Gulf of California will diminish to fresh speeds late this afternoon, and the fresh winds will persist through Mon. NW swell over the waters west of Baja California will reach the Revillagigedo Islands late this afternoon. The swell will persist through Mon and gradually subside Mon night into Tue. High pressure building across the eastern slopes of Mexico will help tighten the pressure gradient across the Tehuantepec area early this week, supporting near-gale force northerly gap winds over these waters tonight through Wed. Winds will reach gale-force there Mon night through Tue night. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh gap winds are over and downwind of the Gulf of Papagayo. Light to gentle winds are elsewhere north of the monsoon trough. Moderate S winds are noted between Ecuador and the Galapagos Islands mainly south of 03N. Light to gentle winds prevail elsewhere S of the monsoon trough. Seas of 4-5 ft prevail, except 5-6 ft in the Papagayo region. For the forecast, moderate to fresh winds are expected across and well downstream of the Gulf of Papagayo region through at least Wed night, pulsing to strong speeds each night through the early morning hours. Gentle winds are expected S of the monsoon trough through tonight, increasing to moderate to locally fresh speeds between Ecuador and the Galapagos Islands Mon through Tue night. ...REMAINDER OF THE AREA... The remnant low of Ramon is a 1008 mb low near 14N124W. The low is not producing any convection. A small area of winds to 25 kt is occurring in the N semicircle. The low is forecast to dissipate by late Mon as it continues slowly westward. Gentle to moderate winds persist outside of Ramon. NW swell continues to spread across the waters, with seas 8 ft or greater now roughly NW of a line from 24N112W to 00N127W. Within this area, seas of 10-12 ft are occurring from 07N to 30N between 122W and 140W. Combined seas are 5-7 ft elsewhere in mixed swell. For the forecast, the NW swell will continue to propagate southeastward, with seas greater than 8 ft covering much of the waters west of 115W through Mon night, gradually subsiding Tue. $$ Hagen