569 AXPZ20 KNHC 111439 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Thu Jan 11 2024 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 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 1430 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning...A cold front will move across the Gulf of Mexico Fri and Sat. High pressure will build across the eastern slopes of Mexico in the wake of the front. The pressure gradient between this area of high pressure and lower pressure within the eastern north Pacific monsoon trough will support a brief period of gale force winds Saturday morning. With a progressive weather pattern, winds will diminish below gale force by Sat night. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 07N93W to 08N120W. The ITCZ continues from 08N120W to 05N140W. Scattered moderate convection is noted from 03N to 08N E of 94W, from 05N to 10N between 110W and 120W, and from 04N to 06N between 130W and 140W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge dominates the offshore forecast waters of Baja California producing fresh to strong NW winds and seas of 8 to 13 ft in NW swell across the waters off Baja California Norte. Mainly moderate winds, and seas of 6-8 ft, prevail off Baja California Sur. Light to gentle winds, and seas of 4-6 ft, are elsewhere over the open waters off Mexico. Fresh to strong winds are over the northern Gulf of California, with light to gentle winds, and seas of 3 ft or less, over the remainder of the Gulf. For the forecast, fresh to strong NW winds and NW swell will prevail over the waters off Baja California Norte and N of Cabo San Lazaro through late today, with seas peaking near 12 ft. Fresh to strong winds can be expected over the Gulf of California into Sat. The next gap wind event is expected in the Tehuantepec region on Sat, with a brief period of gale force winds possible. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh winds are over the Gulf of Papagayo with gentle to moderate winds over the Gulf of Panama. Light to gentle winds prevail elsewhere. Seas are in the 3-5 ft range, except SW of the Galapagos Islands where seas are reaching near 6 ft. For the forecast, moderate to occasionally fresh winds will prevail over the Gulf of Papagayo, increasing to fresh to strong speeds Sat night into Sun. Seas will mainly be in the 3 to 5 ft range, except SW of the Galapagos Islands where seas of 4 to 6 ft will persist the next couple of days. ...REMAINDER OF THE AREA... A 1027 mb high pressure is centered N of the area near 34N132W. The pressure gradient between the area of high pressure and lower pressure in the vicinity of the ITCZ is supporting moderate to locally fresh NE to E trades, and seas of 6-8 ft, N of the ITCZ and W of 120W. Gentle to moderate winds, and seas of 6-7 ft, prevail elsewhere. For the forecast, the area of high pressure will weaken slightly, bringing a slight decrease to the NE trades through Sat night. A low pressure system will pass NW of the area, bringing increasing southerly winds across the NW corner of the forecast region tonight into Fri. This system will usher in a set of NW swell, with seas building to 8 to 11 ft on Sat, and peaking near 12 ft on Sun morning. $$ AL