000 AXPZ20 KNHC 100246 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sun Apr 10 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 0000 UTC surface analysis and satellite imagery through 0230 UTC. ...SPECIAL FEATURES... The pressure gradient between high pressure over the Gulf of Mexico and the equatorial trough is supporting minimal gale- force winds in the Gulf of Tehuantepec, with seas peaking near 11 ft. The area of high pressure will shift eastward, diminishing the pressure gradient which will result in winds over the Gulf of Tehuantepec diminishing below gale force this evening. Winds and seas will continue to decrease through Sun. Seas generated from this gale- force gap wind event have spread far from the Tehuantepec region, with seas greater than 8 ft reaching as far west as 105W. 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 07N78W to 06N83W to 05.5N95W. The ITCZ continues from 05.5N95W to 09N112W. It resumes from 05N127W to 05N135W to 05N140W. Scattered moderate convection is noted from 04N to 10N between 80W and 101W, from 03N to 11N between 110W and 125W, and from 03N to 07N between 130W and 138W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO Please refer to the Special Features for details on the ongoing gale-force gap wind event in the Gulf of Tehuantepec. Aside from conditions in the Gulf of Tehuantepec, moderate to fresh NW winds prevail west of Baja California Norte. Fresh to strong winds prevail over the northern Gulf of California, with moderate winds elsewhere over the Gulf. Light to gentle winds prevail elsewhere. Seas are 6-12 ft west of Baja California Norte, and 5-6 ft elsewhere offshore Mexico. Seas are in the 2-3 ft range in the northern Gulf of California and 1-3 ft elsewhere in the Gulf. For the forecast, the gale-force winds in the Gulf of Tehuantepec will diminish below gale force this evening as high pressure over the Gulf of Mexico shifts eastward. Fresh to strong winds will persist across the northern Gulf of California through Mon night. A set of northerly swell will propagate across the waters off Baja California tonight into Sun, persisting through Mon. A cold front will move into the northern portion of the area by Tue morning. Fresh to strong NW winds are likely behind the front to the west of Baja California Norte. A second set of northerly swell will enter the area behind the front. This will maintain wave heights in excess of 8 ft west of Baja California through much of next week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR Fresh to strong winds prevail over the Gulf of Papagayo region, with moderate winds over the Gulf of Panama. Light to gentle winds prevail elsewhere. Seas are in the 4-6 ft range, except 6-8 ft in the Papagayo region. Seas are 7-10 ft in N swell well offshore of Guatemala due to the ongoing gap wind event in the Gulf of Tehuantepec. For the forecast, fresh to strong winds in the Papagayo region will continue into next week, reaching near gale force late tonight through early Sun. Mainly light to gentle winds are expected over the rest of the offshore waters, pulsing to fresh in the Gulf of Panama into early next week. NW to N swell associated with a gale-force gap wind event in the Tehuantepec region will impact the waters well offshore Guatemala through this evening. S to SW swell will increase seas Mon to the south of the Galapagos Islands and to the west of Ecuador. REMAINDER OF THE AREA Strong high pressure of 1039 mb is centered north of the area near 39N137W. This area of high pressure is generating a tight pressure gradient that is supporting fresh to strong NE winds over the northwest portion of the area. Seas in this area are in the 10-14 ft range. Moderate to fresh trade winds are elsewhere north of the ITCZ and west of 130W, with gentle to moderate winds prevailing elsewhere. Seas are in the 6-8 ft range. Southern Hemisphere swell is affecting the area south of the Equator between 110W-120W, with 8-9 ft seas. For the forecast, the area of fresh to strong winds over the northwest part of the area will continue through the weekend before starting to diminish early next week. Swell generated from these winds will spread southward, with seas greater than 8 ft covering much of the waters north of 10N and west of 115W by Mon night. A weak cold front will enter the northern waters by Tue morning. The front will bring a reinforcing northerly swell to the area east of 125W and north of 22N Tue through Wed. Southerly swell from the Southern Hemisphere will continue to affect areas south of 05N between the Galapagos Islands and 120W through the early part of next week. $$ AL