000 AXPZ20 KNHC 082111 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2111 UTC Thu Nov 8 2018 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 2015 UTC. ...TROPICAL WAVES... A tropical wave has an axis extending from 20N94W to 09N94W, moving westward at around 20 kt. Dry air in the wave environment is inhibiting convection at this time. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 07N78W TO 09N113. The ITCZ extends from 09N115W to 06N140W. Scattered moderate convection is noted within 120 nm of the monsoon trough between 91W and 104W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge extends from 1033 mb high pressure west of California southeastward to near 18N105W. The ridge will prevail over this area the next few days. Mainly light to gentle anticyclonic flow around this ridge will prevail west of the Baja California Peninsula, with seas less than 8 ft in NW swell. The only exception will be fresh winds over the Mexico offshore waters S of 20N and W of 113W associated with the remnant low of Xavier. Gulf of California: High pressure is building over the Great Basin region today. This will help induce strong to near gale force northerly winds over the northern Gulf early Fri through Sat morning, with seas building to 10 ft. Winds will then diminish to 15 kt or less Sat night and Sun. Gulf of Tehuantepec: A cold front will shift across the Gulf of Mexico and reach the Bay of Campeche by Sat morning. This will help usher in the next gap wind event across Tehuantepec. Winds are forecast to increase briefly to near gale force late Sat then diminish on Sun. A more significant gap wind event is expected by Tue of next week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to occasionally strong winds will pulse from the Gulf of Papagayo beginning Sat night. Otherwise, light to gentle winds are forecast north of the monsoon trough. Gentle to moderate southwest monsoon flow is expected south of the monsoon trough. A round of modest cross equatorial SW swell is expected to move into the region off Panama and Costa Rica Fri afternoon, and last though the weekend. REMAINDER OF THE AREA... Moderate to locally fresh NE to E winds prevail N of the ITCZ and west of 120W, while gentle to moderate E to SE flow is noted south of the ITCZ. A new pulse of northerly swell will build seas to 8 ft N of 29.5N between 122W and 130W early Fri, diminishing by Sat. The remnant low of Xavier is still present near 18N115W with occasional scattered convection within 120 nm of the center. However, latest scatterometer winds show only fresh breeze or weaker conditions and seas 7 ft or less. $$ Latto