000 AXPZ20 KNHC 070913 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 705 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 0600 UTC surface analysis and satellite imagery through 0900 UTC. ...SPECIAL FEATURES... Recent satellite wind data show that Julio has degenerated into a trough of low pressure, and the last advisory was issued by the National Hurricane Center on this system. The remnant low of Julio is centered near 19.5N 112.6W at 07/0900 UTC moving W at 11 kt. A westward or west-southwestward motion is expected today. Estimated minimum central pressure is 1007 mb. Maximum sustained wind speed is 25 kt with gusts to 35 kt. Continued weakening is forecast and the remnants of Julio are expected to be absorbed by a broad area of low pressure located to the south the system later today. 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 94W/95W north of 01N, moving west at 10 kt. Scattered moderate convection is noted N of 13N between 94W and 96W, including the Gulf of Tehuantepec. A cluster of moderate to isolated strong convection is near and behind the northern end of the wave axis over SE Mexico. Another tropical wave is near 132W 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 14N94W to 17N108W, then resumes W of the remnant low of Julio at 13N117W to 11N130W to 09N140W. Clusters of moderate to isolated strong convection are noted N of 07N between 82W and 87W. This convective activity is affecting the Pacific coastal waters of western Panama and Costa Rica. Scattered moderate convection is from 11N to 14N between 111W and 119W, from 08N to 10N between 123W and 126W, and from 08N to 10N between 136W and 138W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Julio Julio has degenerated into a trough of low pressure. A large surface low to the south of the system appears to weaken the cyclone. Please, see Special Feature section for details. Elsewhere, a ridge across the eastern slopes of the Sierra Madre Oriental in Mexico supports a weak gap wind event across the Tehuantepec region. Northerly winds and seas to 8 ft are expected there through early this afternoon. The most recent altimeter pass showed 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 W to NW winds and seas in the 4-6 ft range will prevail across the offshore waters of Baja California through mid-week as a broad cyclonic circulation dominates the area. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Moderate to locally fresh SW winds prevail S of the monsoon trough, while mainly light and variable winds are noted per scatterometer data N 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