000 AXPZ20 KNHC 030251 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Fri Sep 3 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 0330 UTC. ...TROPICAL WAVES... A tropical wave extends from 04N to 19N with axis near 114W, moving west at 15-20 kt. Scattered moderate convection is from 08N to 17N between 108W and 120W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 12N87W to 14N108W to 11N120W to 11N130W to 09N135W. The ITCZ begins near 09N135W and continues beyond 08N140W. Aside from the convection associated with the tropical wave, scattered moderate convection is N of 08N between 92W and 105W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Moderate to locally fresh NW winds off the Baja California peninsula will gradually diminish to gentle to moderate tonight and to light to gentle by Sat night as the pressure gradient relaxes across the region. Seas of 3 to 5 ft will build to 6-7 ft along the coast of Mexico as long period SW swell reaches the area Fri through early next week. Light to gentle variable winds are elsewhere and will prevail through Tue, except for the offshore waters between Guerrero and Jalisco where an area of low pressure is forecast to develop Mon night into Tue. Environmental conditions are expected to be conducive for some gradual development of the system thereafter as it moves west-northwestward away from southwestern Mexico. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Gentle winds prevail north of the monsoon trough, with gentle to locally moderate W to SW winds south of the monsoon trough. Seas are 4-7 ft across the offshore waters. Little change in marine conditions are expected the next few days. Fresh southwest swell will propagate into the waters between Colombia and the Galapagos Islands Fri and build through this weekend, increasing wave heights to near 8 ft by Sat night. Seas across the remaining offshore waters will build to 6-8 ft by Sun night. REMAINDER OF THE AREA... A surface trough extends from 30N120W to 25N126W. Moderate north- northeast winds and seas of 5-7 ft remain to the north of the trough. Winds and seas will decrease through Sat as the trough shifts slowly southeastward and dissipates. Otherwise, broad and weak high pressure dominates the waters north of the monsoon trough, along with gentle to moderate northeast trades. Gentle to moderate southerly winds prevail south of the monsoon trough, moderate to locally fresh east of 128W. Seas of 5-8 ft in mixed long-period swell dominate the waters. Little overall change in these marine conditions is forecast through the next few days. $$ Ramos