511 AXPZ20 KNHC 240901 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 523 UTC Fri Aug 24 2018 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 0600 UTC surface analysis and satellite imagery through 0900 UTC. ...TROPICAL WAVES... The axis of a tropical wave is near 81W N of 02N, moving W at around 20 kt. Associated convection is described in the Monsoon Trough section below. The axis of a tropical wave is near 95W N of 03N, moving W at 20 kt. Associated convection is described in the Monsoon Trough section below. The axis of a tropical wave is near 124W from 03N to 20N, moving W around 15 kt. Associated convection is described in the Monsoon Trough section below. The axis of a tropical wave is nmear 135W from 03N to 19N, moving W at 10 to 15 kt. Associated convection is described in the Monsoon Trough section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N86W to 08N94W to 13N112W to 11N120W to 11N130W to 08N139W. Scattered moderate and isolated strong convection is N of 05N between 81W and 84W, from 07N to 15N between 90W and 103W, and from 07N to 13N between 114W and 126W. Scattered moderate convection is noted from 06N to 09N between 131W and 140W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... In the Gulf of Tehuantepec, fresh to strong northerly winds and seas to 8 ft will persist through early today before decreasing. Winds and seas will once again increase across Tehuantepec Sat night and Sun night. Elsewhere, ridging across the waters north of 20N will support moderate to occasionally fresh winds funneling along the coast of Baja California through the next several days, with 3 to 5 ft seas, with the highest seas off Baja California Norte. Winds will increase to fresh to strong offshore of Baja California Norte Mon night through Tue night with seas building to 6 to 8 ft. Meanwhile, gentle to moderate southerly flow will persist over the Gulf of California. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... The monsoon trough will linger between 08N to 12N during the next few days. Winds on both sides of the trough axis will generally be light to moderate. The main exception to this will be over the Gulf of Papagayo, where nocturnal offshore winds will pulse to fresh the next several nights, except fresh to strong Fri night into early Sat. Seas are expected to remain less than 8 ft downstream of Papagayo with the winds. REMAINDER OF THE AREA... The pressure gradient between ridging across the northern waters and the monsoon trough will support gentle to moderate trades and 4 to 7 ft seas in mixed swell north of the monsoon trough and west of 120W through the weekend. Sea heights will be relatively low for most of the forecast area this week. Long period swell could arrive from the Southern Hemisphere toward the end of this week and cause seas near the Equator to begin building over the weekend, although seas will remain less than 8 ft. $$ AL