Tropical Weather Discussion
Issued by NWS
Issued by NWS
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409 AXPZ20 KNHC 020901 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Nov 2 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 0900 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A cold front will move across the Gulf of America on Sun and a strong ridge will settle across Mexico and the Gulf in the wake of the front. Strong winds will funnel through the Chivela Pass and gap winds in Tehuantepec will resume, reaching near gale force speeds and rough seas by Sun afternoon and gale force winds by Sun evening with seas reaching very rough ranges Sun night through Tue. Gales will prevail through Tue night, however strong to near gale force winds will gradually diminish through Thu evening. 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 07N77W to a 1010 mb low near 12N112W to 09N122W. The ITCZ stretches from that point to 08N137W. Scattered moderate isolated strong convection is ongoing from 04N to 10N E of 99W, from 07N to 14N between 106W and 125W, and from 05N to 10N W of 136W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak pressure gradient across the region is supporting moderate or weaker winds, and moderate seas, except for slight seas in the Gulf of California. For the forecast, a cold front will move across the Gulf of America on Sun and a strong ridge will settle across Mexico and the Gulf in the wake of the front. Strong winds will funnel through the Chivela Pass and gap winds in Tehuantepec will resume, reaching near gale force speeds and rough seas by Sun afternoon and gale force winds by Sun evening with seas reaching very rough ranges Sun night through Tue. Gales will prevail through Tue night, however strong to near gale force winds will gradually diminish through Thu evening. Otherwise, long period NW swell will move into the Baja California Norte offshore waters this morning, and spread to Cabo San Lucas by tonight before gradually subsiding through Tue evening. A second set of large NW swell is forecast to enter the waters N of Punta Eugenia late Thu. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh NE winds are ongoing in the Gulf of Papagayo with moderate seas to 7 ft. Gentle to moderate SW to W winds and moderate seas are elsewhere south of the monsoon across the Central America offshores. Between Ecuador and the Galapagos Islands, winds are mainly moderate from the SE to S, and seas are moderate to 7 ft in SW swell. For the forecast, moderate to fresh gap winds and moderate seas are expected to pulse across the Papagayo region through Thu. A strong Tehuantepec gap wind event starting this afternoon will result in moderate N to NE winds and moderate to rough seas in the far western offshore waters of Guatemala and El Salvador Mon through Tue night. ...REMAINDER OF THE AREA... A 1025 mb high pressure centered near 32N132W extends a ridge across the E Pacific subtropical waters. Long period NW swell continues to spread across the waters N of 20N and W of 120W ahead of a frontal boundary NW of the region. Rough seas in the 8 to 11 ft range are associated with this swell event. Moderate or weaker winds and seas are elsewhere N and south of the ITCZ/monsoon trough W of 100W. For the forecast, the subtropical ridge will dominate the waters W of 120W into early next week. Large NW swell will continue to spread SE through Mon night and then gradually subside late Tue. A cold front will enter the NW region Tue night preceded by fresh to strong winds and rough seas. Otherwise, shower and thunderstorm activity associated with a broad area of low pressure located several hundred miles south-southwest of the Baja California Peninsula is currently disorganized. Any additional development of this system appear unlikely as it moves slowly westward across the central part of the eastern Pacific during the few couple of days. $$ Ramos