000 AXPZ20 KNHC 082100 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Fri Apr 8 2022 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 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 2055 UTC. ...SPECIAL FEATURES... A recent scatterometer satellite pass show N-NE gale-force winds across the Gulf of Tehuantepec. The tight pressure gradient will continue to support gale-force winds through Saturday evening. Fresh to strong winds will then persist through Sunday afternoon. Seas will continue to build, peaking near 16 ft tonight into early Saturday. Seas will subside below 8 ft by Sunday morning. Seas generated from this gale-force gap wind event will spread far from the Tehuantepec region, with seas greater than 8 ft reaching as far west as 105W on Saturday. Please read the latest NWS High Seas Forecast issued by the National Hurricane Center at the website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from eastern Panama near 08N78W to 07N89W to 07N100W. The ITCZ stretches from 07N100W to 08N120W to beyond 07N140W. Scattered moderate to isolated strong convection is noted from 02N to 11N and E of 102W. Scattered moderate convection is seen from 03N to 11N and between 105W and 123W, and from 04N to 09N and W of 133W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO Please refer to the Special Features for details on the latest gale- force gap wind event in the Gulf of Tehuantepec. The offshore waters of Baja California remain in a gentle to moderate NW wind regime as the subtropical ridge continues positioned well northwest of the region. NW swell is producing seas of 5-8 ft, which was confirmed by a recent altimeter satellite pass. Moderate to fresh NW breezes are present in the northern Gulf of California, with seas of 2-4 ft. In the rest of the gulf, gentle to moderate winds and 1-2 ft seas prevail. Outside of the influence of the gap wind event occurring in the Gulf of Tehuantepec, moderate or weaker winds and seas of 4-7 ft are found in the remainder of the Mexican offshore waters. For the forecast, the gale-force winds in the Gulf of Tehuantepec will continue through Sat evening before diminishing. The NW swell in the offshore waters of Baja California will gradually subside tonight and Sat. However, another set of northerly swell will enter this area Sat afternoon, spreading SE through the weekend into early next week. Fresh to strong winds over the northern Gulf of California will develop Sat and continue into Sun, before diminishing late Sun. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR Moderate to locally fresh easterly winds are present in the Papagayo region to 90W, with seas of 3-5 ft. Gentle to moderate S-SE winds are found in the waters south of 02N. Seas in this region are 4-7 ft. Elsewhere, including the Gulf of Panama, light to gentle winds and seas of 4-6 ft prevail. For the forecast, fresh to strong trades are expected to develop in the Papagayo region tonight and continue into next week. Seas will build to 9 ft by Sun. Mainly light to gentle winds are expected over the rest of the offshore waters through the end of the week, pulsing to moderate to fresh in the Gulf of Panama this weekend into early next week. NW swell associated with a gale- force gap wind event in the Tehuantepec region will propagate into the northern waters late Sat. Seas elsewhere will be mainly driven by a moderate S to SW swell. REMAINDER OF THE AREA A robust subtropical ridge of 1041 mb is positioned near 39N142W and continues to dominate the tropical eastern Pacific. The tight pressure gradient between the high pressure and a dissipating cold front just north of our area result in fresh to strong NE winds behind a line from 30N127W to 21N140W. A recent scatterometer satellite pass confirmed these winds. NW swell associated with these winds is producing 8-11 ft seas in the region described. Fresh NE winds are noted between 07N to 15N and W of 130W, with seas of 6-8 ft. Elsewhere, gentle to moderate winds and seas of 5-8 ft prevail. For the forecast, the area of fresh to strong NE winds N of 20 will continue to spread primarily eastward through the weekend. The associated seas will peak near 14 ft N of 25N this weekend. $$ DELGADO