000 AXPZ20 KNHC 070317 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 207 UTC Mon Sep 7 2020 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 0000 UTC surface analysis and satellite imagery through 0300 UTC. ...SPECIAL FEATURES... Julio is downgraded to a Tropical Depression at 07/0300 UTC. At this time, it is centered near 19.4N 111.3W moving W at 11 kt, and this general motion with a decrease in forward speed is expected for the next couple of days. Estimated minimum central pressure is 1007 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Numerous moderate convection is noted within 60 nm N semicircle of center. An area of moderate to isolated strong convection is to the SW of Julio covering the waters from 15N to 18N between 113W and 117W. Further slow weakening is anticipated, and Julio is forecast to dissipate on Tuesday. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPEP5.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMEP5.shtml for more details. ...TROPICAL WAVES... A tropical wave is near 93W north of 01N, moving west at 10 kt. Scattered showers are near the wave axis S of 15N. Clusters of moderate to isolated strong convection are observed near the northern end of the wave over SE Mexico, and near the Guatemala/Mexico border. Another tropical wave is near 130W from 01N to 19N, moving west at 10 to 15 kt. convection is limited near the wave axis. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 11N86W to 14N93W to 15N104W, then resumes W of T.D. Julio at 14N111W to 10N130W to 09N140W. Scattered moderate isolated strong convection is noted over the Gulf of Panama, and N of 06N between 80W and 86W. Scattered moderate convection is within about 120 nm S of the monsoon through W of 135W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see Special Features above for information on T.S. Julio. Elsewhere, the pressure gradient between high pressure across the eastern slopes of the Sierra Madre Oriental in Mexico and the eastern Pacific monsoon trough will support fresh to strong northerly gap winds over the Gulf of Tehuantepec through Monday with seas to 8 ft. A recent altimeter pass shows seas to 8 ft near 14N96W. As it is normal for this time of the year, mainly SE to S winds will prevail across the Gulf of California. A very tight pressure gradient across the Great Basin of the United States will bring fresh to locally strong southerly winds across the northern Gulf of California today through Tue. On Tue night and Wed, winds are forecast to veer to the NW likely increasing to 25-30 kt as a strong high pressure center settles over the Great Basin area. Seas are expected to briefly build to 6-8 ft. Mainly light to gentle winds W to NW and seas in the 4-6 ft range will prevail across the offshore waters of Baja California N of Cabo San Lazaro through today. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Moderate to fresh SW winds prevail S of the monsoon trough. Seas are 6 to 8 ft in long-period southerly swell. Moderate to fresh SW winds and southerly cross-equatorial swell will persist south of the monsoon trough the next several days. REMAINDER OF THE AREA... A ridge dominates the waters N of 20N W of 120W. Gentle to moderate winds prevail north of the monsoon trough. Moderate to fresh southerly flow persists south of the monsoon trough, with areas of 7 to 8 ft seas. Long-period southerly swell is spreading northward across the region E of 120W, with seas in the 7 to 9 ft range. This swell event will gradually subside early this week. $$ GR