000 AXPZ20 KNHC 170946 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1020 UTC Wed Apr 17 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 0600 UTC surface analysis and satellite imagery through 0900 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough passes through the coastal sections of Colombia near 06N77W to 05N91W. The ITCZ continues from 05N91W to 04N110W to 04N126W to 01N135W beyond 01N140W. Scattered to numerous strong rainshowers are inland in the coastal plains of Colombia from 02N to 06N, and within 60 nm to the south of the surface trough between 87W and 90W. Widely scattered moderate to isolated strong rainshowers are within 180 nm on either side of the ITCZ between 91W and 106W, and within 450 nm to the north of the ITCZ between 115W and 130W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gulf of Tehuantepec: Gentle to moderate S to SW winds from Wednesday until Thursday night, will swing around in direction, and gain in speed, in order to become strong N breezes as Friday morning approaches. Expect N gale-force winds once Friday morning starts. The gale-force winds will last from Friday morning until Saturday morning. The gale-force winds will subside in speed, and in areal coverage, from Saturday morning until Sunday morning. Gulf of California: Fresh to strong W to SW gap winds, from 29.5N to 30.5N, will become NW gap fresh-to-strong winds, until sunrise this morning on Wednesday. Fresh to strong NW winds will cover the area from 23N to 28N on Thursday night. The fresh to strong W to SW gap winds, from 29.5N to 30.5N, will return on Saturday night, and continue until Sunday night. Gentle to moderate W winds are within 75 nm of the coast of Cabo San Lucas in Mexico. A weak pressure gradient prevails across much of the rest of the area. The winds are gentle, and the sea heights are ranging from 4 feet to 7 feet. Surface high pressure that is to the north of the area, will strengthen on Wednesday. Expect moderate to locally fresh winds developing off the Baja California coast. NW swell propagating into the waters that are to the west of the Baja peninsula will build seas to 8 feet today. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to strong NE to E winds will pulse in the Gulf of Papagayo, from early this morning until later on Thursday morning. The pulsing winds stop on Thursday morning. No pulsing fresh to strong winds will be present. The pulsing winds will continue until Tuesday night, the end of the forecast period. Gulf of Panama: Fresh to strong N to NE winds will be present only this morning, on Wednesday. The sea heights will start in the range from 4 feet to 6 feet, and build to 5 feet to 7 feet. S to SW swell will be mixing with NE wind waves, from this morning until Thursday night. Expect sea heights ranging from 3 feet to 5 feet from Thursday night until Friday night. The sea heights will subside to 2 feet to 4 feet from Friday night into the weekend. Light to moderate winds will prevail elsewhere, across the waters that are to the west of Ecuador, through Saturday night. The combined sea heights between Ecuador and the Galapagos Islands will remain in the range from 6 feet to 8 feet, in S to SW swell through midweek. The highest sea heights will be found to the south of the Equator. REMAINDER OF THE AREA... A surface ridge extends ESE across the northern waters toward the Revillagigedo Islands. Fresh to strong NE trade winds are occurring from 05N to 12N from 130W westward, and the sea heights are ranging from 7 feet to 9 feet. A 125W surface trough is helping to enhance the surface pressure gradient, as high pressure persists across the northern waters. The area of fresh- to-strong trade winds will expand, to the west of the surface trough. The sea heights will build to 11 feet today. The associated winds and sea heights will diminish by Friday, as the surface trough weakens, and high pressure gradually retreats westward. A set of NW swell will propagate into the northern waters late through Thursday. The sea heights will build to 8 feet to the west of Baja California Norte. $$ mt