Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Thu Dec 25 2025 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 0730 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure N of the region will force gale-force northerly gap winds into the Gulf of Tehuantepec this morning along with rough seas. Strong winds and moderate seas will then continue into the weekend. Northern Waters Significant Swell: Large NW swell generated by a gale-force low pressure centered N of the area is bringing very rough seas to waters N of 25N and W of 125W, with seas of up to 17 ft near 30N135W. This swell will continue propagating into the region through tonight, with rough seas reaching as far S as 23N and as far E as 120W, before gradually decaying on Fri. Rough seas of 8 to 11 ft are likely to prevail into the weekend. Please read the latest High Seas Forecast issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more information. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N81W to 06N95W. The ITCZ extends from 06N95W to 09N123W to beyond 08N140W. No significant convection is noted near the monsoon trough or ITCZ. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section for information on a Gale Warning in the Gulf of Tehuantepec. Outside of the Gulf of Tehuantepec, fresh S winds are ongoing in the northern Gulf of California. Also, fresh SW winds are occurring E of a stationary front well offshore Baja Norte. Otherwise, winds are moderate or weaker. Rough seas in NW swell are ongoing well offshore Baja California Norte, elsewhere slight to moderate seas prevail. For the forecast, aside from the Gulf of Tehuantepec, NW swell over the waters north of Punta Eugenia will be reinforced by a new set of NW swell tonight into Fri, spreading rough seas southward across the offshore waters of the Baja California peninsula. Fresh to locally strong NW winds are likely to develop in the Gulf of California Sun into Mon as high pressure builds southward toward toward the region. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong winds are over the Papagayo region. Moderate to fresh winds are in the Gulf of Panama. Light to gentle winds are elsewhere N of 05N. Gentle to moderate winds are found south of 05N. Seas are in the 3-5 ft range, except reaching 6 to 7 ft in the Gulf of Papagayo. For the forecast, the pressure gradient between high pressure north of the area and the eastern north Pacific monsoon trough will support pulsing fresh to locally strong northeast to east gap winds in the Gulf of Papagayo through the weekend. Mainly gentle to moderate north winds are expected in the Gulf of Panama during the period. Gentle or lighter winds and slight to moderate seas are expected elsewhere through the period. ...REMAINDER OF THE AREA... Please read the Special Features section for details on significant swell impacting much of the northern waters. A cold front has stalled from 30N117W to 20N128W. Convection previously associated with this feature has diminished overnight. Another cold front is noted from 30N128W to 27N140W. E of this front, fresh to strong SW winds are ongoing, with fresh to strong W to NW winds behind it. A mid-level trough along 115W is inducing scattered moderate convection just SW of the Revillagigedo Islands. Rough seas encompass waters NW of a line from 28N119W to 15N140W. Elsewhere across the waters, generally moderate or weaker trades dominate, with moderate seas.