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Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sun Nov 15 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 0350 UTC. ...SPECIAL FEATURES... Significant NW Swell Event: A series of NW swell sets will continue to impact the waters N of about 05N for the next several days associated with the passage of several cold fronts. Currently, a cold front extends from 30N117W to 25N128W to 24N132W where it stalls to 24N140W. Ahead of the front, and extending as far south of 05N and W of 110W, rough seas of 8 to 12 ft in decaying NW swell associated with a former front is ongoing. The period of this swell is 9 to 11 seconds. Elsewhere, N of 17N and behind the front, a reinforcing and larger set of NW swell with 12 to 18 seconds period continues to spread across the northern waters with peak seas around 22 ft. The front is forecast to reach Punta Eugenia by Sun morning while weakening, with rough seas of 12 to 17 ft spreading as far south as 13N, and rough seas of 8 to 11 ft to 05N. These high energy waves will have a period of 11 to 15 seconds. These seas will keep spreading SE as yet another set with seas of 12 ft or greater arrives to near 30N140W by late tonight into early Sun, spreading across the majority of the waters into Tue. Please read the latest NHC High Seas Forecast at website: https://www.hurricanes.gov/text/HSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from Panama near 07N81W westward to 05N100W to 07N121W. The ITCZ extends from 07N121W to 08N130W and beyond 08N140W. Scattered moderate isolated strong convection is noted from 03S to 07N E of 115W, and from 08N to 14N between 120W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle to locally moderate NW winds are occurring offshore of Baja California ahead of a cold front moving from 30N117W to 25N128W to 24N132W. Rough seas of 8 to 18 ft are occurring offshore of the Baja peninsula and near the Revillagigedo Islands. Elsewhere, light to gentle winds and moderate seas of 5 to 7 ft in NW swell prevail, except for slight seas of 3 ft in the Gulf of California. For the forecast, fresh to strong N to NE winds and rough seas are expected to develop in the Gulf of Tehuantepec by Mon evening. Winds will pulse to gale force Tue evening through the end of next week, and very rough seas to 14 ft will accompany these winds. Elsewhere, a new N to NW swell will support very rough seas offshore of Baja California tonight, with peak seas of 12 to 20 ft expanding offshore of the whole peninsula through Sun. Seas may temporarily subside to 8 to 12 ft late Sun into early Mon before the next reinforcing swell event promotes seas of 8 to 16 ft through midweek. In addition, a cold front is expected to produce fresh to locally strong N to NW winds north of Cabo San Lazaro late Mon through midweek. Elsewhere, rough seas of 8 to 10 ft in NW swell will expand to offshore of southwestern Mexico Sun through early next week. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate NE winds are pulsing in the Gulf of Papagayo where seas are 4 ft. Elsewhere, light to gentle winds are noted along with moderate seas of 5 to 6 ft in mixed SW and NW swell prevail. For the forecast, moderate to occasionally fresh E to NE winds are expected to pulse in the Gulf of Papagayo through Mon night, with fresh to occasionally strong winds developing by Tue and continuing through Fri. Moderate N winds will also pulse in the Gulf of Panama through Fri. Moderate or weaker winds and moderate seas will prevail elsewhere. Looking ahead, rough seas in N swell may develop well offshore of Guatemala by Wed, prompted by gale-force winds in the Gulf of Tehuantepec. Elsewhere, a set of NW swell may build seas to 8 ft or greater SSW of the Galapagos Islands on Wed. ...REMAINDER OF THE AREA... Please refer to the Special Features section above for details on a series of significant NW swell sets, which will impact much of the open waters. A cold front extends from 30N117W to 25N128W to 24N132W where it stalls to 24N140W. Ahead of the front, and extending as far south of 05N and W of 110W, rough seas of 8 to 12 ft in decaying NW swell associated with a former front is ongoing. The period of this swell is 9 to 11 seconds. Elsewhere, N of 17N and behind the front, a reinforcing and larger set of NW swell with 12 to 18 seconds period continues to spread across the northern waters with peak seas around 22 ft. Moderate to fresh NE to E winds prevail from N of the ITCZ near 09N to 19N and W of 126W. Rough seas of 8 to 13 ft in long period NW swell are within this region of winds. Otherwise, a new cold front is entering the NW waters tonight, which is being followed by fresh to strong NNW winds and rough seas of 13 to 22 ft seas. For the forecast, a series of NW swell sets will continue to impact the waters N of about 05N for the next several days associated with the passage of several cold fronts. These seas will keep spreading SE as yet another set with seas of 12 ft or greater arrives to near 30N140W tonight into early Sun, spreading across the majority of the waters into early next week. In addition, fresh to strong N to NE winds are expected behind the passage of this new cold front, affecting generally N of 10N and W of 120W late Sun through the middle of next week.