Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Mon Apr 13 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 0600 UTC surface analysis and satellite imagery through 0800 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 09.5N74.5W to 03N84W to 04.5N98W. The ITCZ extends from 05.5N100W to 06.5N117W to 04N130W to beyond 05N140W. A southern hemispheric ITCZ extends from 03.4S92W to 02S106W to beyond 03.4S120W. Scattered moderate convection is noted E of 79W, from 01N to 08N between 83W and 93W, and from 03.5N and 06.5N between 120W and 136W. Scattered to locally numerous moderate to strong convection is noted from 04N to 08N between 92W and 120W. Scattered moderate convection is noted S of 02.5S between 86W and 96W near the southern hemispheric ITCZ. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak cold front has moved into Baja California Norte overnight, and extends southwestward across the offshore waters through 28N120W. Weak high pressure is collapsing ahead of the front and yielding light to gentle NW to N winds across the nearshore waters of Baja, and light NE winds farther offshore becoming gentle NE winds across the Revillagigedo Islands. Moderate seas to 5 ft in mixed swell prevail across these waters. Narrow bands of showers and isolated thunderstorms are occurring along and just ahead of the front across the open waters, and along the ridgeline of the mountains across north and central portions of the Baja Peninsula. Behind the front, light to gentle NW winds prevail, with seas 5 to 7 ft in fresh NW swell. Gentle N winds prevail across southern portions of the Gulf of California seas of 3 to 4 ft, while fresh to strong SW gap winds and moderate seas prevail continue across north portions of the Gulf. Farther east, gentle NW to W winds prevail across the waters from Las Tres Marias to Puerto Angel, except moderate winds near the coast from Cabo Corrientes to Acapulco. Fresh N gap winds are noted in the Tehuantepec region N of 15N, where seas are around 6 ft. For the forecast, the cold front will move slowly across the Baja Norte waters and the extreme north portions of the Gulf of California today, then gradually dissipate across central Baja and the central Gulf of California on Tue. Expect light to gentle NW to N winds across the Baja waters tonight and Mon ahead of the front, before winds begin to freshen Mon evening through Tue. High pressure behind the front will build across the region and dominate conditions through the rest of the week. Fresh to strong SW to W gap winds are expected in the northern Gulf of California through around midnight Mon night ahead of the front, with winds then becoming moderate to fresh from the N through the entire Gulf early Tue morning through Wed evening. Elsewhere between Baja Sur and Puerto Angel, winds will be moderate or weaker with moderate seas through Tue. Pulsing fresh to strong northerly gap winds will prevail across and downwind of the Tehuantepec region through late Tue morning. Afterwards, moderate and variable winds are expected there through Fri. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE to E gap winds prevail across the Papagayo region and extend downwind to near 90W tonight, producing rough seas to 8 ft. Moderate to fresh N winds and moderate seas in SW swell prevail in the Gulf of Panama, and extend beyond the Azuero Peninsula to near 05N. Light to gentle winds and moderate seas in SW swell dominate the remainder of the offshore forecast waters. Widely scattered moderate convection continues across the near and offshore waters of western Panama and Costa Rica, while strong convection occurring over NW Colombia is reaching the Pacific coast and waters within 20 nm. For the forecast, broad high pressure will continue N of the area through Wed before weakening, and will maintain fresh gap winds pulsing to strong during the nighttime and early morning hours across the Papagayo region to near 90W. In the Gulf of Panama, moderate northerly winds, pulsing to fresh each night, are expected throughout the forecast period. Light to gentle winds and moderate seas will prevail elsewhere. Cross-equatorial SW swell will raise seas to 6 to 8 ft between Ecuador and the Galapagos Islands Tue through Wed evening. ...REMAINDER OF THE AREA... High pressure NW of the area extends a ridge southward through 30N14W and into the area W of 124W. East of the ridge, a cold front has entered the local waters tonight, passing through 30N116W to near 25N136W. Weak high pressure ahead of this front is collapsing. Gentle to moderate N to NE winds prevail north of the front, with building seas 6 to 8 ft in NW swell. The pressure gradient between the ridge and lower pressures in the vicinity of the ITCZ supports moderate trade winds N of the ITCZ to about 15N between 97W and 124W, and moderate to fresh winds south of 25N to the west of 124W. Moderate seas in mixed NW and S swell generally prevail across the area waters south of the front, with seas to 7 ft within the trade wind zone between 95W and 120W. For the forecast, the weak high pressure ridge will dominate the weather pattern across the northern forecast waters through Mon with little change in winds and seas, before high pressure behind the front shifts southeastward to near 33N through midweek, and strengthens the pressure gradient across the local area modestly. A weakening cold front across the northern waters will move into the central Baja Peninsula to near 22N134W by Tue then gradually dissipate. Moderate N to NE winds and moderate to briefly rough seas in NW swell are forecast in the wake of the front through Wed. Moderate winds are expected in the trade wind zone W of 95W through Mon, becoming moderate to locally fresh Tue through Fri.