839 AXPZ20 KNHC 251530 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1350 UTC Thu Jul 25 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...SPECIAL FEATURE... Post-Tropical Cyclone Dalila near 21.9N 120.8W 1009 mb at 8 AM PDT moving WNW at 6 kt. Maximum sustained winds 20 kt gusts 30 kt. Dalila no longer has any significant deep convection associated with it. Dalila will become a remnant low and move to 22.3N 121.7W this evening, 22.7N 123.1W Fri morning, 23.0N 124.9W Fri evening, and dissipate Sat morning. See the latest NHC forecast/ advisory under AWIPS/WMO headers MIATCMEP5/WTPZ25 KNHC for more details. ...TROPICAL WAVES... A tropical wave has an axis extending from 04N79W to 17N79W, moving W around 15 kt. This wave is triggering convection over the Gulf of Panama and the W coast of Colombia. Scattered moderate and isolated strong convection is occurring near the wave axis or N of 03N between 78W and 81W. A tropical wave has an axis extending from 03N91W to 17N91W, moving W between 15 and 20 kt. Scattered moderate convection is present S of Central America near the wave axis from 04N to 14N between 89W and 95W. A tropical wave has an axis extending from 04N106W to 17N106W, moving W around 20 kt. This tropical wave is situated near the eastern edge of a broad area of scattered moderate and isolated strong convection spanning from 06N to 13N between 100W and 122W. A tropical wave has an axis extending from 02N116W to 17N116W, moving W between 15 and 20 kt. This tropical wave is embedded in a broad area of scattered moderate and isolated strong convection spanning from 06N to 13N between 100W and 122W. Environmental conditions are expected to become more conducive for the development of this system during the next few days. A tropical depression could form early next week while the disturbance moves W to WNW at 10 to 15 mph. The latest Tropical Weather Outlook gives this system a 20 percent chance of tropical cyclone formation during the next 48 hours. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 1010 mb low pressure near 10N75W to 07N82W to 12N104W to 12N133W. The ITCZ continues from 12N133W to 11N140W. Aside from convection associated with tropical waves, scattered moderate and isolated strong convection is noted from 06N to 13N between 100W and 122W. 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 near the Baja peninsula will generally support moderate SE to S winds over the Gulf of California during the next several days. Northerly winds will increase to fresh to strong over the Gulf of Tehuantepec Fri night. This gap wind event will likely persist through early next week. Winds will be strongest at night, aided by nocturnal drainage flow. 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 combined with long period S swell will maintain seas to 7 ft off the coasts of Panama and Colombia and also between Ecuador and the Galapagos Islands through Fri night. Strong gap winds will affect the Gulf of Papagayo through Sat morning, and again Sun through Mon. REMAINDER OF THE AREA... A ridge dominates most of the forecast waters N of 18N and W of 120W. Moderate NE to E winds and 5 to 7 ft seas are noted south of the ridge and N of the monsoon trough and ITCZ. The ridge will strengthen across the northern forecast waters as Post- Tropical Dalila dissipates during the remainder of this week. Cross equatorial SE to S swell will affect the forecast waters S of the Equator and E of 120W through Sun. Seas of 8 to 9 ft will subside below 8 ft Sun night as the swell decay. Wind waves generated by a tropical wave currently along 117W will generate an area of seas from 06N to 08B between 115W and 118W Fri morning. This area of seas will expand and head W in tandem with the tropical wave through Sat, then subside Sat night. $$ CAM