000 AXPZ20 KNHC 242115 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2004 UTC Wed Jul 24 2019 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 1800 UTC surface analysis and satellite imagery through 2100 UTC. ...SPECIAL FEATURE... Tropical Depression Dalila is centered near 20.7N 119.8W at 24/2100 UTC moving NW or 315 degrees at 6 kt. A turn toward the west-northwest is forecast to occur by early Thursday, and that general motion should continue until the system dissipates in a few days. Estimated minimum central pressure is 1008 mb. Maximum sustained wind speed is 25 kt with gusts to 35 kt. Additional weakening is forecast during the next couple of days, and Dalila is expected to become a post-tropical remnant low tonight. See the latest NHC forecast/advisory under AWIPS/WMO headers MIATCMEP5/WTPZ25 KNHC for more details. ...TROPICAL WAVES... A tropical wave is along 85W N of 03N, moving W at 15 to 20 kt. This wave is helping to induce convection over Central America. Scattered moderate convection is near the wave axis over the EPAC waters. A tropical wave is along 101W from 04N to 16N, moving W at 15 and 20 kt. Scattered moderate convection is near the wave axis. A tropical wave extends from 17N110W to 04N112W. This tropical wave continues to produce disorganized showers and cloudiness. Upper-level winds are expected to become more conducive for development of this system during the next few days, and a tropical depression could form over the weekend or early next week while the system moves westward to west-northwestward at 10 to 15 mph. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N85W to 08N90W to 12N101W to 11N130W. Aside from convection associated with tropical waves and Dalila, scattered moderate convection is noted from 04N to 10N E of 92W, and from 06N to 13N between 100W and 118W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak ridge will dominate the offshore forecast waters west of Baja California through the upcoming weekend. A surface trough over the Baja California Peninsula will support light to gentle southerly winds across the Gulf of California during the next several days. Northerly winds will increase to fresh to strong speeds over the Tehuantepec region by Thu night. This gap wind event is expected to persist through early next week. Winds will generally be strongest when nocturnal drainage occurs. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to locally fresh S to SW winds south of the monsoon trough will generally maintain seas to 7 ft off the coasts of Panama and Colombia through Fri. Seas of 8 to 9 ft are expected near the equator through Fri night as long period SE to S swell moves into the region. Fresh to strong gap winds will affect the Gulf of Papagayo Thu through Fri night in the wake of a passing tropical wave. Another gap wind event could begin in this area Sat night. REMAINDER OF THE AREA... A ridge dominates most of the forecast waters N of 18N and W of 120W. Mainly moderate NE to E winds and seas of 5 to 7 ft are noted under the influence of the ridge. An area of 8 ft seas in mixed swell is seen from 08N to 12N W of 133W, and S of 05N between 130W and 135W. Cross equatorial southerly swell will affect the waters S of Equator and E of 120W beginning tonight building seas in the 8 to 9 ft range. $$ GR