000 AXPZ20 KNHC 100240 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Mon May 10 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 0000 UTC surface analysis and satellite imagery through 0130 UTC. ...SPECIAL FEATURES... Tropical Storm Andres is centered near 14.3N 109.0W at 10/0300 UTC moving NW at 5 kt. Estimated minimum central pressure is 1005 mb. Maximum sustained wind speed is 35 kt with gusts to 45 kt. Andres is a sheared tropical cyclone with scattered moderate to strong convection within 420 nm in the east quadrant and within 120 nm in the west quadrant, with little significant convection in the north and south quadrants. Associated seas are 8-11 ft. Andres will weaken to a tropical depression Mon morning, become a remnant low Tue morning, and dissipate Wed evening. 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 low pressure over northwest Colombia near 10N75W to 04N87W to 08N100W to 11N105W, then resumes from 11N111W to 06N130W. The ITCZ continues from 06N130W to 05N140W. Scattered moderate and isolated strong convection is noted within 05N135W to 07N132W to 13N131W to 10N122W to 10N117W to 13N114W to 09N112W to 01N13W to 05N135W. Scattered moderate convection is within 06N140W to 04N137W to 03N140W to 06N140W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for details on Tropical Storm Andres, located southwest of southern Mexico near the outer offshore waters boundary. Associated marine conditions are expected to remain just outside of the offshore waters, while convection will remain across these outer waters through Mon. A broad weak ridge extends across the waters north of 18N. Gentle to moderate NW-N winds prevail offshore of Baja California, with gentle to moderate southerly winds in the Gulf of California. 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 Storm Andres. For the forecast, fresh to strong southerly winds will pulse in the northern Gulf of California tonight. Gentle to moderate winds will prevail elsewhere. A moderate NW swell will continue to dominate the waters west of Baja California through the early part of the week. A strong gap wind event is possible in the Tehuantepec region Thu through Fri night. 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. For the forecast, moderate to fresh winds will prevail in the Papagayo region, pulsing to fresh to strong during the overnight hours through Wed, then again Fri. Gentle to moderate winds will prevail elsewhere. Moderate southerly swell will move into the waters today through Tue, with another set arriving Fri. REMAINDER OF THE AREA... Please see the Special Features section above for details on Tropical Storm 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 fresh trades dominate the waters north of the ITCZ and W of 120W. Gentle to moderate winds prevail elsewhere. Northerly swell producing seas of 7-10 ft continues to propagate across the northern waters N of 23N. Elsewhere, seas are in the 6-9 ft range across the waters W of 120W 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 the early part of the week, except fresh to strong along 30N between 120W and 132W tonight due to a locally tight pressure gradient. Northerly swell will linger north of 20N through the early part of the week as well as across the west-central waters, decaying by the middle of the week. 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. $$ Lewitsky