000 AXPZ20 KNHC 050316 CCA TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0315 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 0000 UTC surface analysis and satellite imagery through 0300 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 07N78W to 07N90W to 06N90W to 1010 mb low pressure near 08N101W to 1010 mb low pressure near 09N118W to 12N122W, then resumes near 10N129W to 07N136W. The ITCZ extends from 07N136W to beyond 07N140W. Scattered moderate convection is noted within 120 nm south of the monsoon trough east of 82W, within 90 nm of the monsoon trough between 114W and 121W, and from 09N to 12N between 127W and 131W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak cold front extends across the Baja California Norte offshore waters from 30N117W to 26N120W to 22N124W. Fresh S to SW winds are occurring ahead of the front over the northern Gulf of California, while gentle winds prevail behind the front. Weak high pressure is analyzed NW of the Revillagigedo Islands, and moderate NW winds are found along the coast of Mexico between Cabo Corrientes and Acapulco. Fresh to strong gap winds are beginning to pulse once again over the Gulf of Tehuantepec. The cold front will weaken while crossing the northern waters overnight. Fresh to strong northerly gap winds will pulse across the Gulf of Tehuantepec through Thu night. Fresh NW to N flow will develop over the central and southern Gulf of California Thu night through Sat. Gale force winds are expected over the Gulf of Tehuantepec Fri night through Sat night as high pressure builds over eastern Mexico behind a Gulf of Mexico cold front. Large NW swell will move across the waters off Baja California this weekend, then subside early next week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE to E winds will pulse across and downstream of the Gulf of Papagayo through Mon, with seas peaking around 8 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 earlier altimeter passes showing 8-11 ft seas generally south of 20N and west of 115W. Wave heights will continue subsiding through Thu as residual swell decays over the region. A cold front extends from 30N117W to 26N120W to 22N124W, then transitions to a trough that extends to 15N128W. The front will weaken overnight as it continues eastward across Baja California. Another cold front will move into the NW portion on Thu, cross the northern waters through Fri night, then stall and weaken on Sat. Associated large NW swell will move into the NW waters late Thu and propagate SE through the weekend. Seas will build greater than 12 ft over the northern waters Fri through Sat, peaking around 20 ft over the far NW portion. $$ Reinhart