Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Thu Apr 9 2026 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 0313 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 09.5N84.5W to 06N97W. The ITCZ continues from 06N97W to 06N120W to 02N140W. A second ITCZ is south of the Equator and runs from 02S121W to 04S140W. A cluster of moderate to isolated strong convection is depicted from 02N to 06N between 122W and 130W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Moderate N winds are noted across the Gulf of Tehuantepec along with seas of 4 to 5 ft. Otherwise, a weak ridge continues to dominate the offshore waters of Baja California supporting moderate to fresh NW to N winds off Baja California north of 23N. Light and variable winds are observed across most of the Gulf of California. Elsewhere across the Mexican offshore waters, light to gentle winds and moderate seas, primarily in southerly swell, prevail. For the forecast, northerly winds will pulse to strong to near gale force Thu night and Fri night over the Gulf of Tehuantepec. During the same period seas will build to around 8 ft. Northerly winds will pulse to fresh to strong through the weekend, with seas 7 to 8 ft. Afterwards, gentle to moderate winds are expected. Moderate to locally fresh NW winds and moderate seas are forecast off Baja California through Mon under the influence of a ridge. By Mon night into Tue, the pressure gradient may tighten enough between the ridge to the W and lower pressures inland Mexico to support moderate to fresh NW winds off the Baja California Peninsula. Fresh to strong SW winds may briefly develop in the northern Gulf of California Fri night ahead of a cold front approaching Baja California Norte, then moderate to fresh SW to W winds are expected through the upcoming weekend. Elsewhere, winds will be moderate or weaker with moderate seas through the next several days. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate gap winds prevail across the Gulf of Papagayo. Seas are 4 to 5 ft with these winds. Farther east, moderate to locally fresh N winds and seas around 3 ft are present in the Gulf of Panama. Light to gentle winds and moderate seas dominate the remainder of the offshore forecast waters. For the forecast, fresh to locally strong gap winds are expected during the nighttime and early morning hours in the Papagayo area and downwind to about 89W through Thu. Toward the upcoming weekend, winds may increase to 30 kt with seas building to 8 or 9 ft in the Papagayo region as a stronger high pressure settles N of the area. Moderate northerly winds, occasionally fresh, are forecast in the Gulf of Panama throughout the forecast period, with stronger conditions most likely during the upcoming weekend. Light to gentle winds and moderate seas will prevail elsewhere. ...REMAINDER OF THE AREA... A stationary front extends from 30N130W to 27N140W. Gentle NW winds and moderate seas are behind the front. An upper level trough south of the front is supporting scattered showers from 20N to 25N and west of 127W. A 1018 mb high pressure center is east of the front located near 28N124W and extends a ridge across the remainder of the N waters, particularly N of 16N and W of 114W. The pressure gradient between the ridge and lower pressures in the vicinity of the ITCZ supports moderate to locally fresh winds in the trade wind zone, W of 120W. Seas of 5 to 7 ft are within these winds. Elsewhere, moderate or weaker winds and moderate seas are occurring. For the forecast, the front will move eastward across the waters N of 20N while dissipating by Fri. Gentle to locally moderate winds will follow the front along with seas 6 to 7 ft. The high pressure center located east of the front will dissipate on Thu, then, the high pressure following the front will take control of the weather pattern across the forecast waters over the next several days.