000 AXPZ20 KNHC 012110 CCA TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Mon Apr 1 2019 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... A weak surface trough extends from 08N83W to 05N91W. The ITCZ continues from 05N91W to 01N140W. Scattered moderate showers are from 04N to 08N between 82W and 88W. Scattered moderate isolated strong showers and thunderstorms are located from 01N to 05N between 120W and 137W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak ridge extends from a 1022 mb high centered near 26N134W to 115W. The gradient between the ridge and lower pressures over mainland Mexico is producing moderate NW winds west of Baja California. Light to gentle NW winds will prevail off Baja California through mid-week. Fresh winds are expected Friday and Friday night as a strong ridge builds to the west of the region. Large long period NW swell will sweep into the northern waters Sat night. Gulf of California: Scatterometer data shows gentle to moderate NW winds across the Gulf of California. Fresh S-to-SW gap winds are expected to develop in the northern Gulf of California Tue night ahead of a weakening frontal trough. Gulf of Tehuantepec: Northerly gap winds will pulse to 20 to 25 kt through Wed, becoming light to gentle Wed night through Fri. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to strong winds will develop in the Gulf of Papagayo Tue night, and continue through Thu. Gulf of Panama: Gentle to moderate northerly winds will prevail across and downstream of the Gulf of Panama through Thu. Light to gentle winds will prevail elsewhere through the week. Sea heights will gradually subside across the area. REMAINDER OF THE AREA... A stationary front over NW waters will gradually weaken to a frontal trough through Wed. Expect 8 ft seas in NW swell west of 130W today, with the area of 8 ft seas shrinking to 04N-18N west of 130W by Tue afternoon. High pressure will weaken during the next couple days, resulting in weakening trades and subsiding seas. Low pressure developing north of the area Wed and bring a cold front across the northern waters Wed night and Thu. Very large long period NW swell associated with this front will sweep across the northern waters later this week as an intense low pressure system tracks well north of the region. Seas will build to 12-18 ft across the NW portion by Fri night. $$ Mundell