000 AXPZ20 KNHC 131501 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1252 UTC Fri Dec 13 2019 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N85W to 06N92W to 05N101W. The ITCZ continues from 05N101W to 08N110W. It resumes from 07N132W to 06N140W. Scattered moderate isolated strong convection was noted from 06N to 08N between 95W and 100W. Scattered moderate isolated strong convection was noted from 05N to 08N between 131W and 140W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... In the Gulf of Tehuantepec, strong gap winds are expected to diminish this afternoon. Winds will pulse to strong once again this evening. The pressure gradient between a ridge anchored by a 1028 mb high near 30N132W and a trough across the Gulf of California is maintaining gentle to moderate northerly flow off the coast of Baja California, with moderate to fresh NW winds across the Gulf of California. Low pressure will develop over Mexico early on Sat, with a tightening of the pressure gradient supporting increasing winds fresh to strong N of Punta Eugenia Sat evening. Strong winds will spread S to near Cabo San Lazaro before diminishing early on Monday. Long period NW swell in excess of 8 ft will continue through the offshore waters of Baja California and reach the Revillagigedo Islands by Sat night. High pressure will build over the Great Basin on Monday evening and will support fresh to near gale force N flow over the Gulf of California through Thu morning. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh winds are expected across the Gulf of Papagayo through the forecast period. Elsewhere, gentle to moderate S to SW monsoon flow will persist across the offshore waters of Costa Rica, Panama, Colombia, and Ecuador through Sat night, while light to gentle flow is across the Gulf of Panama. REMAINDER OF THE AREA... The pressure gradient between a 1028 mb high pressure center located near 30N132W two areas of low pressure, centered near 11N116W and 09N129W is supporting fresh to strong trade winds across the waters from 08N and 22N and W of 115W. NW swell is propagating across the forecast waters, with seas in the 8 to 13 ft range N of 05N and W of 115W. The NW swell will continue across the forecast waters, with seas 8 ft or greater covering the waters N of 07N and W of 110W through the weekend. A fresh set of NW swell will move into the NW waters early next week, with seas building to near 20 ft over the northern waters by midweek. $$ AL