000 AXPZ20 KNHC 301554 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Wed Nov 30 2022 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: Strong high pressure is forecast to build over the Gulf of Mexico behind a cold front through Thu, and will support gale force winds over the Gulf of Tehuantepec by early Thu morning. Strong northerly winds will begin across the Tehuantepec region Wed night, and increase to gale force from early Thu through Fri morning. Seas will build to 8-12 ft during this time. Strong to just below gale force winds are expected Fri through late Sat morning, before winds increase again to gale force midday Sat through Sun night. Winds are then expected to gradually diminish Mon and Mon night. Please see the latest High Seas Forecast at http://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from western Panama to 1010 mb low pressure located near 07N88W to another 1010 mb low pressure situated near 13N113W to 09N123W. The ITCZ continues from 09N123W to beyond 08N140W. Scattered moderate isolated strong convection is noted from 08N to 15N between 100W and 117W, and from 06N to 10N W 133W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle to moderate NW winds prevail across the offshore waters of Baja California to Cabo Corrientes. Seas are 5 to 7 ft in NW swell across the Baja waters north of Punta Eugenia, and 4 to 5 ft elsewhere to Cabo Corrientes. Light winds and seas 3 ft or less prevail inside the Gulf of California. Elsewhere across the remaining Mexican offshore waters, mainly light to gentle winds and seas of 4 to 5 ft prevail. For the forecast, NW to N swell dominating the Baja California waters will slowly subside through tonight. A strong and significant gap wind event will develop in the Tehuantepec region Wed night, and reach gale force early Thu through Fri morning. Winds will then remain strong to just below gale force through Sat morning, and increase to gale-force again midday Sat through Sun night before gradually diminishing into Mon night. A strong cold front is expected to stall across the Baja California Norte waters around midday Fri and weaken quickly. Accompanying large NW swell will reach Baja Norte waters Fri morning and build to 10-11 ft Fri night before beginning to slowly fade late Sat. High pressure will build across the Baja region Sun night through Mon and freshen the winds across the Baja waters. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh NE winds are noted in the Gulf of Papagayo region and extend offshore to near 10N87W. Light to gentle variable winds prevail elsewhere N of 09N, with seas of 4 to 5 ft. Moderate SW to W winds and 5 to 6 ft seas are to the S of the trough. Gentle to moderate S to SW winds prevail off the Ecuador offshore waters to the Galapagos Islands with seas 4 to 6 ft. Showers and a few modest thunderstorms have diminished in recent hours across the coastal waters of Colombia, and Panama, but are lingering within 45 nm of Costa Rica's coast line. For the forecast, moderate winds and seas will persist S of 09N into the weekend as a weak pressure pattern prevails. Fresh gap winds over the Papagayo region will persist into the upcoming weekend, pulsing to strong each night through Sat night. These winds will extend beyond 90W Wed night through Fri, then retract to E of 90W Sat afternoon through Sun. REMAINDER OF THE AREA... A 1021 mb high is center across the NE Pacific near 31N128W, and extends a ridge into the northern forecast waters, between 110W and 140W. Moderate to locally fresh NE to E winds and seas of 6 to 8 ft are dominating the area N of the monsoon trough/ITCZ to 20N and W of 123W. Gentle to moderate winds and seas of 6 to 7 ft are noted elsewhere north of the monsoon trough. Moderate to locally fresh S to SW winds are noted S of the ITCZ/monsoon trough W of 110W. Gentle to moderate SW winds are noted S of the monsoon trough E of 110W. For the forecast, little change in marine conditions is expected through morning. A strong cold front is expected to reach the far NW waters Thu morning, preceded by fresh to locally strong SW winds ahead of it this afternoon into tonight. Behind the front, strong to near gale force NE winds are expected as it sinks slowly southward to along 27.5N by Fri morning. The NW swell behind this advancing front will raise seas 15 to 17 ft across the far NW waters W of 135W by late Thu. The front is expected to reach from 31N120W to 26N140W by Fri morning before stalling and weakening considerably by Sat morning. $$ GR/SS