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Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Mon Apr 6 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 1200 UTC surface analysis and satellite imagery through 1400 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: Building ridging over NE Mexico supports strong to gale-force northerly winds and rough seas to 12 ft across the Gulf of Tehuantepec. Gale-force winds will continue through early Tue morning with seas building to around 15 ft tonight into early Tue. Gusty winds to near storm force may occur. Seas generated from this gap wind event will spread well away from the Tehuantepec area, with seas 8 ft or greater reaching as far south as 11N tonight into Tue. Winds and seas will quickly diminish Tue. Please read the latest High Seas Forecast issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 07N78W to 09N85W to 04.5N98W. The ITCZ stretches from 04.5N98W to 09N128W to beyond 07N140W. A second ITCZ is located south of the Equator and runs from 03.4S98W to 03S102W to beyond 03.4S107Wto beyond 03.4S120W. Scattered moderate isolated strong convection is observed from 03N to 09N between 77W and 89W, and from 04N to 12.5N between 115W and 132W. Scattered moderate convection is observed from 00N to 02.5N between 135W and 138W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on the Gulf of Tehuantepec Gale Warning. Aside from the Gale Warning in the Gulf of Tehuantepec, a weak NW to SE ridge extends along the outer offshore waters boundary with troughing near Baja California. This pattern supports moderate NW-N winds N of 20N and offshore Baja California. Winds are mainly light to gentle across the remainder of the waters, including in the Gulf of California. Seas are mainly 5-6 ft away from the Gulf of Tehuantepec in a mix of S and NW swells, with seas 3 ft or less in the Gulf of California away from the entrance. For the forecast, other than the Gale Warning in the Gulf of Tehuantepec, winds will pulse there to fresh to strong starting Tue night. Moderate to locally fresh NW winds and moderate seas are expected off Baja California through the week. Winds may pulse to strong N of Punta Eugenia at times. Winds will be moderate or weaker elsewhere through the week. Moderate to fresh SW winds may develop in the northern Gulf of California Fri night. Little change in seas is forecast through the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A building ridge over the NW Gulf of America forces fresh to locally strong easterly winds across the Gulf of Papagayo region. Seas in these waters are 5-6 ft. Farther east, moderate to fresh N-NE winds and 5-6 ft seas are present in the Gulf of Panama. Meanwhile, light to gentle winds and moderate seas dominate the remainder of the offshore forecast waters. Some clusters of deep convection are from offshore Colombia and Panama to southern Costa Rica as described above. For the forecast, fresh to strong gap winds are expected during the nighttime and early morning hours in the Papagayo region and downwind to about 90W through the forecast period. Moderate to locally fresh northerly winds are forecast in the Gulf of Panama through much of the week. A gap wind event in the Tehuantepec region will produce seas to 9 ft in the far offshore waters of Guatemala tonight through Tue. Light to gentle winds and moderate seas will prevail elsewhere. ...REMAINDER OF THE AREA... A weak cold front is over the far NW waters of the tropical eastern Pacific, extending from 30N136.5W to beyond 25N140W. A few weak showers are noted ahead of this boundary. Farther S, a deep upper level trough continues to produce abundant cloudiness and some showers over the W-central and northern waters, extending from S of the Hawaiian Islands northeastward to Baja California. Elsewhere at the surface, a weak high pressure system over the northern waters with 1021 mb high pressure centered near 31N127W dominates the remainder of the basin. Moderate to locally fresh easterly winds are occurring from roughly 08N to 15N and W of 110W. Seas in these waters remain around 6-8 ft. Elsewhere, moderate or weaker winds and moderate seas are prevalent. For the forecast, the weak cold front will very slowly shift E during the next couple of days, with moderate to locally fresh winds near it until tonight. Associated seas will briefly build to 9 ft behind the front later today into Tue. Continuing high pressure will support moderate to locally fresh easterly winds and moderate to locally rough seas across the trade wind zone into the middle of the week, supporting seas to around 8 ft. Seas will build to around 8 ft in fresh NE swell from a Gulf of Tehuantepec gale force gap wind event to near 10N100W tonight through Tue night. Moderate to fresh winds will accompany those seas. Seas may build to around 8 ft in southerly swell near 03.4S by the end of the week.