Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Nov 6 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 1800 UTC surface analysis and satellite imagery through 2000 UTC. ...SPECIAL FEATURES... NW Significant Swell Event: Large long-period NW swell generated by a storm force low well north of the area is propagating across the far NW discussion waters, with wave periods of 12 to 14 seconds. Currently, seas over the discussion waters with this swell are peaking near 13 ft (4.0 M). Seas greater than 12 ft will continue across the waters N of 24N and W of 120W into tonight before subsiding below 12 ft. Mariners should use extreme caution in this area, depending on vessel type and cargo. 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 details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N85W to 10N93W to 08N113W. The ITCZ continues from 08N113W to 09N122W and resumes from 09N125W to 09N140W. Scattered moderate and isolated strong convection is noted from 06N to 12N between 94W and 107W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Fresh to strong north to northeast winds, and seas of 6 to 7 ft, are over and downstream the Gulf of Tehuantepec. Moderate to locally fresh winds prevail west of the Baja California peninsula. Light to gentle winds are over the remainder of the open waters off Mexico. Gentle to moderate winds are in the Gulf of California. Seas are in the 6 to 8 ft range west of the Baja California peninsula and southward to the Revillagigedo Islands. Elsewhere over the open waters off Mexico, seas are in the 4 to 6 ft range. Seas are 3 ft or less in the Gulf of California. For the forecast, fresh to strong winds in the Gulf of Tehuantepec will diminish through Fri. Large northwest swell over the waters N of Punta Eugenia will propagate through the remainder of the offshore waters of Baja California through Fri night, then subside during the weekend. The next gap wind event for the Gulf of Tehuantepec region is expected to begin Sun night, with winds possibly reaching gale- force by early Mon morning. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to northeast to east winds are over and downstream the Gulf of Papagayo region. Light to gentle winds prevail elsewhere N of the monsoon trough. Gentle to moderate winds are S of the monsoon trough. Seas are in the 4 to 6 ft range over the discussion waters. For the forecast, moderate northeast to east winds in the Gulf of Papagayo region will diminish to light to gentle on Fri through Sun. Winds in the Papagayo region will then freshen by early next week. Otherwise, relatively quiet conditions are expected throughout the region for much of the forecast period. ...REMAINDER OF THE AREA... Please see SPECIAL FEATURES section above for details on a large set of NW swell is moving through the far NW discussion waters that will continue over the northern waters through tonight before subsiding. Aside from the NW swell discussed in the SPECIAL FEATURES section above, high pressure dominates the waters N of 20N, anchored by a 1025 mb high centered near 27N130W. Light to gentle winds are in the vicinity of the high center and over the NW waters. The pressure gradient between the area of high pressure and lower pressure within the monsoon trough, and in the vicinity of the ITCZ, is supporting moderate to fresh trade winds from 10N to 20N and west of 117W. Moderate winds prevail south of the monsoon trough/ITCZ. Seas are in the 8 to 9 ft range from 10N to 20N and W of 115W in a mix of NW swell and NE wind waves. Seas are in the 6 to 8 ft range elsewhere. For the forecast, the NW swell over the NW waters will propagate southeastward during the rest of the week, with seas greater than 8 ft covering much of the waters N of 10N and W of 113W by Fri evening before starting to slowly subside. Another set of NW swell will begin to move into the NW waters on Sun and into early next week.