000 AXPZ20 KNHC 090353 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Fri Aug 9 2024 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 0300 UTC. ...SPECIAL FEATURES... As 09/0300 UTC, Emilia becomes a remnant low, and the last advisory was issued by the National Hurricane Center on this system. At this time, Post-Tropical Cyclone Emilia is centered near 22.3N 125.3W moving west-northwest at 10 kt. This general motion, with a decrease in forward speed and a westward turn is expected over the next couple of days. Estimated minimum central pressure is 1004 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Additional weakening is forecast, and the post- tropical remnant low is expected to dissipate by the end of this weekend. Maximum seas generated by Emilia are 16 ft. Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest Emilia NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. ...TROPICAL WAVES... A tropical wave is along 91W north of 07N to across Guatemala and SE Mexico. Scattered moderate convection is noted on either side of the wave axis. Gradual development of this system will be possible during the next several days while it moves west- northwestward at around 15 mph, parallel to the coast of southwestern Mexico. Currently, this system has a low chance of tropical cyclone formation through the next 48 hours. Please refer to the latest NHC Tropical Weather Outlook at www.hurricanes.gov. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 12N86W to 10N95W to 09N107W, then resumes from 13N129W to beyond 11N140W. Scattered moderate convection is noted from 06N to 13N between 83W and 111W and within about 90 nm S of the monsoon trough between 130W and 135W. Scattered moderate to isolated strong convection is occurring along the Mexican coast between 98W and 102W, including the Acapulco area. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge is building across the offshore forecast waters of Baja California in the wake of the remnant low of Emilia. Currently gentle to moderate winds are noted across the region, with moderate to fresh NW winds in the vicinity of Los Cabos and near Cabo Corrientes. Seas are generally 5 to 7 ft, except 7 to 9 ft N of Cabo San Lazaro due to swell generated by Emilia. Gentle to moderate NW winds prevail in the central and southern parts of the Gulf of California while light to gentle southerly winds are seen in the northern part of the Gulf. Seas are 1 to 3 ft in the Gulf of California, except 4 to 6 ft near the entrance. For the forecast, as the remnant low of Emilia continues to move westward, a ridge will build across the offshore forecast waters of Baja California supporting mainly gentle to moderate winds through the upcoming weekend. Seas will continue to subside across the waters N of Cabo San Lazaro. By late Fri, seas of 4 to 6 ft are expected across most of the offshore Mexican waters. In the Gulf of California, the pressure gradient between the ridge and lower pressure inland Mexico will support moderate to fresh SE winds Sat night and Sun, with seas building to 4 to 6 ft in the northern part of the Gulf by Sun morning. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to locally fresh S to SW winds are occurring south of the monsoon trough, with light to gentle winds elsewhere. Seas are generally 4 to 7 ft across the offshore waters. Scattered moderate to isolated strong convection is occurring along most of the coast of Colombia. For the forecast, mainly gentle to moderate S to SW winds will prevail south of the monsoon trough during the next several days while light to gentle winds are expected N of it. Seas will be generally in the 4 to 6 ft range. ...REMAINDER OF THE AREA... Refer to the Special Features section above for details on Post-Tropical Cyclone Emilia. Seas 8 ft or greater generated by Emilia are covering an area bounded by a line 30N122W to 24N128W to 18N124W to 24N118W to 29N116W to 30N122W. The remnant low of Emilia will move to 22.9N 127.0W Fri morning, 23.5N 129.0W Fri evening, 24.1N 131.0W Sat morning, 24.6N 132.7W Sat evening, 24.8N 134.5W Sun morning, and 24.7N 136.6W Sun evening. Emilia will dissipate late Mon. For the forecast, an area of fresh to strong winds will persist in the northern semicircle of Emilia likely through Sat due to the pressure gradient between the remnant low and a ridge to the N of it. The associated seas will gradually subside as the system continues to weaken. Elsewhere, moderate or weaker winds and moderate seas are expected. $$ GR