059 AXPZ20 KNHC 110838 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Tue May 11 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 0600 UTC surface analysis and satellite imagery through 0740 UTC. ...SPECIAL FEATURES... Tropical Depression Andres is centered near 15.9N 111.0W at 11/0900 UTC moving W at 6 kt. Estimated minimum central pressure is 1007 mb. Maximum sustained wind speed is 25 kt with gusts to 35 kt. Associated seas are estimated at 8-10 ft. No organized deep convection is near the exposed center. Andres will become a remnant low this afternoon, and dissipate Thu morning. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPEP1.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMEP1.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N75W to 06N82W to 08N95W to 13N106W, then resumes from 13N112W to 07N125W. The ITCZ continues from 07N125W to 03N134W to 06N140W. Scattered moderate and isolated strong convection is noted from 02N to 08N between 77W and 82W, and from 06N to 10.5N between 97W and 101W. Scattered moderate convection is noted from 06N to 10N between 103W and 107W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for details on Tropical Depression Andres, located southwest of southern Mexico near the outer offshore waters boundary. A broad weak ridge extends across the waters north of 18N. Gentle to moderate NW-N winds prevail offshore of Baja California, with gentle moderate southerly winds in the Gulf of California, highest in the northern Gulf. Light to gentle winds prevail elsewhere. Seas are 5-8 ft west of Baja California, highest north of Punta Eugenia, in a moderate NW swell. Seas are mainly 3-5 ft elsewhere, higher near the outer fringes of Tropical Depression Andres. For the forecast, fresh southerly winds will pulse in the northern Gulf of California this weekend, increasing to fresh to strong Sat night. Gentle to moderate winds will prevail elsewhere. A moderate NW swell will continue to dominate the waters west of Baja California through today, with another set arriving this weekend. A strong gap wind event is possible in the Tehuantepec region Thu through early Sat with building seas. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Fresh to strong winds are in the Papagayo region, with gentle to moderate winds elsewhere. Seas are in the 3-6 ft range in mixed long period NW and SW swell, except 5-7 offshore of Ecuador and to 7 ft in the Papagayo region. For the forecast, moderate to fresh winds will prevail in the Papagayo region, pulsing to fresh to strong during the overnight hours through the rest of the week and into the weekend. Gentle to moderate winds will prevail elsewhere. Moderate southerly swell will impact the waters through today before subsiding, with another set arriving Fri, with a larger, reinforcing set this weekend. REMAINDER OF THE AREA... Please see the Special Features section above for details on Tropical Depression Andres, located southwest of southern Mexico and just outside of the outer Mexican offshore waters boundary. A broad ridge covers the waters north of the ITCZ. Moderate to locally fresh trades dominate the waters north of the ITCZ and W of 120W. Gentle to moderate winds prevail elsewhere. Northerly swell producing seas of 7-9 ft continues to propagate across the northern waters N of 21N. Elsewhere, seas are in the 6-8 ft in a mix of mainly long period southerly and northerly swell. For the forecast, moderate to locally fresh trades will prevail north of the ITCZ through today. Northerly swell will linger north of 20N through the early part of the week as well as across the west-central waters, decaying by midweek. Southerly swell crossing the equator will help to maintain seas to 8 ft across the southern waters through the early part of the week. Fairly tranquil marine conditions are anticipated for the remainder of the week into the weekend. $$ Lewitsky