000 AXPZ20 KNHC 251606 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Sun Oct 25 2020 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 1550 UTC. ...SPECIAL FEATURES... A cold front will sweep southeastward across northern Mexico and the Gulf of California Sun night into Mon, and bring strong westerly gap winds ahead of the front across north and central portions of the Gulf Sun afternoon through Mon, becoming strong to near gale force northerly winds behind the front by early Mon. Gale force winds are expected over the far northern Gulf of California Mon morning through Mon night. Near gale force winds will prevail afterwards through early Tue. Fresh to strong N to NW winds will then continue along the Gulf of California through Wed morning. Seas will become very rough over the northern Gulf of California Mon through Mon night, with wave heights possibly reaching 13 ft before subsiding to around 8 ft early on Tue. Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website- https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...TROPICAL WAVES... A tropical wave extends from 08N to 17N with axis near 121W, moving westward at 5-10 kt. Scattered showers are noted in the vicinity of the wave axis. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from 11N86W to 11N126W. The ITCZ begins near 11N126W and continues beyond 10N140W. Scattered moderate convection is from 08N to 12N between 96W to 113W, and from 10N-13W along the coast of Nicaragua and El Salvador E of 91W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for details on an upcoming gale event in the northern Gulf of California. Gentle to moderate northwest winds are across the offshore waters of Baja California with seas to 6 ft, while gentle winds are along the SW Mexico offshore waters. Fresh to strong northerly winds will continue to affect the region of the Gulf of Tehunatepec through tonight with seas ranging from 8-9 ft. Moderate to locally fresh winds will then prevail through Mon afternoon with seas subsiding through the middle of the week. Winds will remain light to gentle west of Mexico through Thu, except for the offshore waters between Puerto Vallarta and Manzanillo where moderate to fresh northwest winds are expected Tue evening through Thu associated with the gap wind event in the Gulf of California. A strong cold front will move across northern Mexico and the Gulf of California tonight into Mon. Related impacts are described above under the Special Features section. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Mainly moderate south to southwest winds will continue over the southern waters through Tue night, then increase to moderate to fresh over the Colombia offshores Wed through Thu evening. Seas are expected to remain 5-6 ft in south to southwest swell across the entire region. REMAINDER OF THE AREA... Strong high pressure north of the region extends a broad ridge southward into the discussion area to 21N140W. Pressure gradient between the ridge and low pressure near the California coast and is allowing for moderate to fresh NE winds over the area west of 130W. Tropical wave is along 121W and surface trough near 131W. Both features are well depicted by the latest ASCAT pass with moderate locally fresh NE winds west of the trough, roughly from 15N to 20N west of 130W. These conditions will slowly diminish through Mon morning as the ridge weakens and the tropical wave moves west of the forecast area. $$ Torres