000 AXPZ20 KNHC 142206 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Jan 14 2021 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 1800 UTC surface analysis and satellite imagery through 2130 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A cold front will move across the Gulf of Mexico Fri through early Saturday. Strong northerly winds behind the front will funnel through the Chivela Pass and generate gale force winds in the Gulf of Tehuantepec region beginning Fri night into early Sat, and continuing through early Sun morning. Seas are expected to build to 14 ft during the time of gale conditions. Please read the latest NWS High Seas Forecast issued by the National Hurricane Center at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08N78W to 07N110W to 06N120W. The ITCZ extends from 06N120W to 06N140W. Scattered moderate convection and tstms are from 07N to 14N between 102W and 118W, and from 06N to 12N west of 126W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... There is a gale warning for the Tehuantepec region. Please see Special Features section for more details. Gentle to locally moderate NW to N winds are expected across the offshore waters of Baja California and SW Mexico through Mon evening as a ridge remains in place W and N of the area. NW swell continues to propagate through the waters west of the Baja California peninsula with seas to 11 ft reaching Baja California Sur as indicated by an earlier altimeter pass. Seas 8 ft or greater will continue through Fri before briefly subsiding below 8 ft Fri night into early Sat. A new set of NW swell will enter the waters off Baja California Norte Sat. This swell will spread across the remainder of the offshore waters west of the Baja California peninsula, once again increasing seas to 8 ft or greater over these waters through Sun. A low pressure will develop NW of Punta Eugenia on Mon and move across the Baja California Norte offshore waters with fresh to strong winds and building seas to 13 ft. Gulf of California: High pressure centered over the Great Basin region of United States is supporting moderate to fresh NW winds across the Gulf of California. Strong NW winds are expected over the northern and central gulf Fri morning before diminishing to moderate early in the evening. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Winds will pulse to fresh to strong each night through Sun evening before resuming again Mon evening. Outside of the gap winds areas, mainly light to gentle winds will prevail north of the monsoon trough while gentle to moderate S to SW winds are expected to the south. Seas to 9 ft generated in the Tehuantepec region affecting the outer portion of the offshore waters of Guatemala and El Salvador will subside early this evening. Another gale force gap wind event over the Tehuantepec region will once again generate large seas which will propagate into the offshore waters of Guatemala and El Salvador Sat through early Sun. REMAINDER OF THE AREA... High pressure of 1029 mb is centered N of the area. The pressure gradient between this area of high pressure and lower pressure in the vicinity of the ITCZ is supporting moderate to fresh trade winds north of the ITCZ to 20N and W of 120W. Seas in this area are in the 8-11 ft range in a mix of NW swell and NE-E wind waves. Long period NW swell continues to propagate across the forecast region, with seas 8 ft or greater across much of the waters west of 100W. Another pulse of NW swell will enter the NW waters tonight. Seas with this swell will peak to 18-19 ft near 30N140W early Fri. These successive sets of NW swell will maintain seas greater than 8 ft over much of the forecast waters west of 100W through the end of the week. $$ Ramos