000 AXPZ20 KNHC 102145 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Dec 10 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 1800 UTC surface analysis and satellite imagery through 2100 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 07N78W to 05N94W to a 1012 mb low pressure near 10N110W to 08N125W. The ITCZ continues from 08N125W to beyond 08N140W. Scattered moderate convection is from 02N to 06N between 78W to 82W, and from 06N to 08N between 94W and 102W. Scattered moderate to isolated strong convection is noted from 06N to 13N between 105W and 124W, and from 08N to 10N between 133W and 139W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... For tonight and Friday, winds offshore the coast of SW and west- central Mexico will be gentle. However, expect moderate N winds to the west of Baja California. A gale is possible in the Gulf of Tehuantepec Monday and Monday night. A surface trough extends from 23N112W to 19N113W. Scattered moderate convection is from 16N to 22N between 107W and 113W. High pressure will build in the wake of the trough, supporting strong to locally near gale NW to N winds across the Gulf of California Sun through early Mon. NW swell prevails across the open waters off Mexico. Seas greater than 8 ft will prevail over much of these waters through tonight. The swell will slowly subside, and fall below 8 ft over most of the area by late Fri. A new round of NW swell with wave heights of 8-10 ft will affect the waters off Baja California Norte this weekend. A more significant push of NW swell is likely west of Baja California early next week, with seas of 10-14 ft possible off Baja California Norte by late Mon or early Tue. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to strong offshore gap winds will continue through Fri morning as high pressure prevails over the western Caribbean. Seas are near 9 ft today, with seas greater than 8 ft extending well downwind of the Papagayo region. Seas will subside to below 8 ft late Fri. In the Gulf of Panama, fresh N winds will prevail through Fri morning. Elsewhere, gentle to moderate S to SW winds will prevail south of the monsoon trough through the next several days where seas will be in the 4-6 ft range. REMAINDER OF THE AREA... The pressure gradient between high pressure north of the area and lower pressure in the vicinity of the ITCZ, and within the monsoon trough, is supporting a large area of fresh trade winds roughly from 08N to 22N, west of 120W. These winds will remain in place for the next several days as the high pressure persists north of the area. Long period NW swell covers much of the waters, with seas in excess of 8 ft. Seas will slowly subside, and fall below 8 ft over much of the area north of 20N by early Sat. A new round of northwesterly swell, with seas of 8 to 12 ft, will push southward into the waters north of 20N late Sun into Tue. $$ Hagen