000 AXPZ20 KNHC 171552 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Fri Sep 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...TROPICAL WAVES... A new tropical wave has entered the NE Pacific along 83W north of 05N, moving west around 10-15 kt. No significant deep convection is occurring over the Pacific in association with this wave. The axis of a tropical wave extends along 96W north of 05N, moving west around 10-15 kt. No significant deep convection is occurring in association with this wave. The axis of a tropical wave extends near 111W from 05N to 16N, moving west around 15-20 kt. Scattered moderate convection is noted from 16N-18N between 108W-110W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N78W over Panama to 11N110W to 10N135W. The ITCZ continues from 10N135W to beyond 10N140W. Scattered moderate convection is noted from 09N-11N between 88W-91W as well as from 08N-11N west of 122W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A 1027 mb high is centered near 33N152W with ridging extending eastward to 33N125W then southeastward to 20N115W. NW winds west of Baja California are moderate with tranquil winds elsewhere. Seas are 5-6 ft along the Mexican Pacific offshore waters and 2-4 ft in the Gulf of California. In the forecast, the high pressure well west of California will promote moderate to fresh NW winds along the west coast of Baja California Sat and Sun. Elsewhere quiescent conditions will prevail through at least Tue night. Additionally, no tropical cyclone activity is expected for the next several days. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... A weak pressure gradient is promoting very tranquil winds across the Central American and equatorial offshore waters today. A S swell is promoting seas 6-8 ft in the equatorial waters and around 6 ft in the Central American waters. In the forecast, the moderate S swell across the equatorial waters will diminish by Sat. Otherwise, tranquil conditions should prevail through at least Tue night. REMAINDER OF THE AREA... A 1027 mb high is centered near 33N152W with ridging extending eastward to 33N125W then southeastward to 20N115W. The NE to E trades south of the ridge are moderate or weaker, as well as the SE to SW winds south of the monsoon trough/ITCZ. Seas are 7-8 ft south of 05N primarily due to S swell and 5-7 ft elsewhere. In the forecast, little change in winds across the basin is anticipated and no tropical cyclone activity is expected through the next several days. The moderate S swell across the equatorial waters will diminish by Sat. A moderate NW swell may reach our northern border on Mon and Tue. $$ Landsea