000 AXPZ20 KNHC 071603 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Wed Nov 7 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N74.5W TO low pres near 08N89.5W TO 06N111W, then transitions to ITCZ and continues on to 03.5N122W to beyond 11N140W. Scattered moderate to strong convection is noted from 13N to 16N between 103W and 108W, and from 07N to 10N between 129W and 140W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... An overnight scatterometer near 0500 UTC was well placed to observe the wind field associated with remnant low of Tropical Storm Xavier, which was near 18.5N111W. Fresh to strong winds continue within 75 nm of the northwestern semicircle of the low and are expected to continue through this evening, then begin to diminish tonight through Thu morning to 20 kt or less. A ridge extends from 1027 mb high pressure offshore of northern California near 40N132W south and southeastward to near Cabo San Lucas in Baja California Sur. The ridge will remain in place today and then shift slightly southeast through Fri as the remnant low of Xavier shifts westward. A light to gentle anticyclonic flow around this ridge will prevail west of the Baja California Peninsula, with seas of 4 to 6 ft in NW swell. Gulf of California: High pressure will build over the Great Basin region later this week and induce fresh to strong northerly winds over the northern Gulf early Fri through Sat morning, and raise seas to at least 9 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 later this week 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 Saturday then diminish on Sun. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Light to gentle winds are forecast north of the monsoon trough. Gentle to moderate southwest monsoon flow is expected south of the monsoon trough today before diminishing. Long period SW swell will impact the waters off Panama and Costa Rica today, before subsiding late Thu. Another round of cross equatorial SW swell is expected to move into the region Fri afternoon, and last though the weekend. REMAINDER OF THE AREA... Moderate NE to E winds prevail N of the ITCZ and west of 120W, while gentle to moderate SE flow is noted south of the ITCZ. A new pulse of northerly swell has propagated into the northern waters, with seas to 8 ft N of 29N between 126W and 131W. Seas over this area will slowly subside over the next 24 hours. $$ Stripling