000 AXPZ20 KNHC 172026 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Mon May 17 2021 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 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 2000 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends 09N77W to 08N106W to 09N120W. The ITCZ then continues from 09N120W to beyond 07N135W. Scattered moderate convection extends from 02N to 10N between 85W and 112W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... High pressure centered NW of the area is dominating waters offshore Baja California, creating moderate to fresh NW winds. These winds will continue through mid-week. Fresh to locally strong northwest winds are expected primarily north of Cabo San Lazaro this evening and into Tue as the pressure gradient tightens some. Seas will build to 5-7 ft. Winds will further increase to fresh to strong speeds mainly west of central and northern Baja California beginning late Thu as stronger high pressure builds southeastward across the waters west of Baja California. South to southwest swell will build seas as it propagates across the waters north of Punta Eugenia beginning on Tue. Looking ahead for later in the week, a trough or low may form south of the Gulf of Tehuantepec region. For the Gulf of California, gentle to moderate winds with seas of 3 to 4 feet are expected through the week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Moderate E winds in the Papagayo region will continue to decrease today. These will pulse to moderate again Tue, before diminishing again through late week. Seas of 5-7 ft will change little into late week. Long-period cross equatorial southerly swell will continue to impact the offshore forecast waters over the next several days. Seas of 8-9 ft between Ecuador and the Galapagos Islands will subside to less than 8 ft tonight but additional pulses of long-period southwest swell will reach the area starting Tue night, building seas to 8 ft or higher. REMAINDER OF THE AREA... High pressure continues to dominate the northern waters. This is producing a large area of moderate to fresh trades N of the ITCZ, with seas up to 8 ft. Gentle to moderate trade winds are noted elsewhere, with seas in the range of 6-7 ft mainly due to a southerly swell component. Long-period cross equatorial southerly swell over the waters south of about 10N and east of about 111W, except in the lee of the Galapagos Islands will decay late tonight, but additional pulses of long-period southwest swell will begin to propagate through these same waters by mid- week building seas to a maximum height of 10 or 11 ft west of the Galapagos Islands. $$ KONARIK