000 AXPZ20 KNHC 202102 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1950 UTC Wed Mar 20 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 FEATURES... Gulf of Tehuantepec: Strong winds over the Gulf of Tehuantepec will pulse to minimal gale force during the overnight hours tonight and again on Thu night. Seas will peak near 12 ft during the period of strongest winds. Please read the latest High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 07N78W to 08N85W to 07N90W. The ITCZ continues from 07N90W to 02N114W to 02N140W. Scattered moderate isolated strong convection is noted from 03N to 07N between 84W and 86W. Scattered moderate isolated strong convection is noted from 04N to 06N between 93W and 98W. Scattered moderate isolated strong convection is noted from 04N to 06N between 127W and 130W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section for more details about the Gulf of Tehuantepec Gale Warning. Gulf of California: A weak cold front is passing across the northern Gulf of California. S to SW gap winds will strengthen briefly tonight. Otherwise, fairly benign marine conditions will prevail through the upcoming weekend, with seas 3 ft or less. Elsewhere, moderate to locally fresh NW winds will prevail through the upcoming weekend. NW swell propagating across the waters off Baja California Norte will spread southward across the rest of the Baja Peninsula, with seas 8 ft or greater expected over this area by Thu, before starting to gradually subside. Another swell event will reach the waters during the upcoming weekend. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Winds will pulse to strong during the overnight hours across the Gulf of Papagayo through the forecast period, strengthening some and expanding in coverage Fri. Seas will peak around 9 ft during the strongest winds. Gulf of Panama: Mainly moderate to fresh northerly winds will prevail, pulsing to strong Thu night into early Fri, then again the next two nights. Seas will peak around 8 ft during the strongest winds. Between Ecuador and the Galapagos Islands, 4-6 ft seas in mixed swell will persist, building to 5-7 ft during the upcoming weekend with the arrival of both long period SW and NW swell. Elsewhere, light to moderate winds and 3-5 ft seas will prevail for the next several days. REMAINDER OF THE AREA... A dissipating cold front extending from 29N115W to 25N118W to 19N129W has ushered in a large set of NW swell into the area. Seas are currently peaking near 12 ft over NW and N central waters. The swell will continue to propagate SE across the waters while subsiding the next couple of days. By Thu afternoon, seas 8 ft or greater will cover most of the area W of 110W. A reinforcing set of NW swell will arrive Thu morning along with another cold front that will weaken into the early part of the upcoming weekend. A third cold front will arrive early Sun, ushering in yet another set of NW swell to the NW waters. $$ AL