000 AXPZ20 KNHC 051548 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1408 UTC Thu Dec 5 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 1440 UTC. ...SPECIAL FEATURES... Fresh to strong N to NE winds will pulse across the Gulf of Tehuantepec through Fri night. Gale force winds are then expected over the Gulf of Tehuantepec Sat and Sat night as high pressure builds over eastern Mexico behind a Gulf of Mexico cold front. Another Gale force gap wind event could affect the Gulf of Tehuantepec Wed and Wed night. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N75W to 04N93W to low pres 1011 mb near 09N113W to 09N121W, then resumes from 10N133W to beyond 08N140W. Scattered moderate and isolated strong convection is noted within 90 nm either side of the monsoon trough between 98W and 112W and from 03N to 06N between 78W and 84W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weakening cold front extends from the northern Gulf of California to the waters W of Baja California Norte from 30N112.5W to 25N118W. Light to gentle winds prevail across most of the offshore waters this morning. The cold front will dissipate later today. Fresh NW to N winds will develop over the central and southern Gulf of California tonight through Sat night. Large NW swell will enter the waters W of Baja California Sat and cause seas N of 25N to build to between 8 and 11 ft by Sat night, then seas will gradually subside through Mon night. Gale force gap winds are expected over the Gulf of Tehuantepec Fri night through Sat night. See the Special Features section for more details. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Strong NE to E winds will pulse across and downstream of the Gulf of Papagayo through Mon, with seas peaking between 8 and 9 ft downstream of the Gulf each morning. Gentle to moderate S to SW monsoon flow will persist across the offshore waters of Costa Rica, Panama, Colombia, and Ecuador during the next several days. REMAINDER OF THE AREA... NW swell persists across much of the region, with altimeter passes generally showing an area of 8 to 9 ft seas south of 10N between 100W and 125W. The NW swell in this area will continue to decay and allow seas to fall below 8 ft by Fri morning. A cold front is entering the far NW portion of the discussion area. The front will cross the northern waters through Fri night, then stall and weaken on Sat. Associated large NW swell will sweep into the area and peak W of Baja California Sat, then continue propagating SE and decay through the weekend. Seas will build to greater than 12 ft over the northern waters Fri through Sat, peaking around 23 ft over the far NW portion on Friday. $$ CAM