000 AXPZ20 KNHC 221551 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Thu Apr 22 2021 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 a 1009 low pressure located over northern Colombia near 10N75W to 07N95W to 09N107W to 08N111W. The ITCZ axis continues from 08N111W to 06N130W to 05N140W. A surface trough is within the ITCZ/Monsoon trough and extends from 13N109W to 04N113W. Scattered moderate isolated strong convection is noted near the surface trough axis from 04N to 13N between 108W and 120W, and from 04N to 10N between 120W and 140W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge dominates the offshore waters west of Baja California, producing moderate NW to N winds across the area. Seas are 5 to 7 ft N of Cabo San Lazaro and 4 to 6 ft elsewhwere. Long period southerly swell is now reaching the waters W of Baja California to build seas to 6-7 ft across most of the region. Gulf of California: Mainly gentle to moderate southerly winds will prevail across the Gulf rest of the week. Gulf of Tehunatepec: Winds have diminished across the Tehuantepec region as the gap forcing across the area weakens considerably. Fresh northerly winds will persist today. Downwind seas around 7-10 ft today will spread far offshore and subside to 6-8 ft by tonight. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... High pressure building over the NW Caribbean will support fresh to strong winds across the Papagayo area through Fri morning, with associated seas building to 8-9 ft. Light to gentle winds will prevail elsewhere through Sun. Large, long period cross- equatorial southerly swell will continue to build seas to 8 ft across the waters between Ecuador and Galapagos Islands through tonight. REMAINDER OF THE AREA... The gradient between high pressure well north of the forecast area and lower pressures in the vicinity of the ITCZ supports a large area of moderate trade winds from 08N to 30N west of 128W based on scatterometer data. Seas are 6 to 8 ft across this region. High pressure will gradually weaken today as a cold front approaches from the northwest. Northerly swell across the waters north of 29N between 120W and 128W will subside to less than 8 ft tonight and Fri. $$ GR