000 AXPZ20 KNHC 190237 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Dec 19 2020 Tropical Weather Discussion for the eastern Pacific Ocean from the Equator to 32N, east of 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 0200 UTC. ...SPECIAL FEATURES... Gulf of Tehunatepec Gale Warning: High pressure over the Gulf of Mexico will support gale force winds in the Gulf of Tehuantepec tonight, then strong through Mon. A cold front moving across the Gulf of Mexico Mon will induce a new round of N gales over the Gulf of Tehuantepec Mon night through Tue. Seas will peak around 10-11 ft tonight, and then again with the next gale event. Please read the latest NWS High Seas Forecast issued by the National Hurricane Center at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from northern Colombia near 10N74W to 06N89W. The ITCZ axis extends from 06N89W to 09N118W to 09N140W. Scattered moderate convection is noted from 07N to 10N between 111W and 113W, and from 08N to 11N between 120W and 125W. Scattered moderate and isolated strong convection is noted from 04N to 16N between 129W and 140W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See Special Features for details about the Gulf of Tehuantepec Gale Warning. In the wake of a weak cold front that will dissipate tonight, NW winds will increase in the Gulf of California Sat and Sun, with some strong winds expected. Similar conditions are expected Wed afternoon and night behind the next cold front. Large, long period NW swell W of Baja California will slowly subside through Sat night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Fresh to occasionally strong NE to E winds will pulse across the Papagayo region through the next several days as high pressure remains in place over the W Caribbean. Moderate to occasionally fresh N winds will pulse in the Gulf of Panama through Sat. No significant swell events are forecast through early next week. REMAINDER OF THE AREA... High pressure north of the area extends across the waters north of the ITCZ. The moderate pressure gradient between the high the the ITCZ is causing fresh to locally strong NE to E trades. Seas will peak around 8-10 ft tonight and Sat due to combined wind waves and some NW swell. A cold front impinging on the high will allow the trades to weaken substantially Sun through Tue. A weak trough may develop over the west-central waters by mid-week increasing trades again slightly. No new large long-period swell is expected over forecast waters for the next several days. $$ Lewitsky