Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Wed Dec 3 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 0830 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N85W to 07N100W. The ITCZ runs from 07N100W to 12N119W, then resumes from 07N133W to beyond 07N140W. A surface trough breaks the ITCZ, analyzed from 19N118W to 08N130W. Scattered moderate convection is in the vicinity of the trough between 109W-123W, from 07N to 10N E of 104W, and from 06N to 11N W of 130W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A surface trough prevails SW of the Revillagigedo Islands is aiding in scattered moderate convection in the vicinity of Socorro Island. Moderate E winds are also present in this area. Fresh to strong gap winds are noted in the Gulf of Tehuantepec. Elsewhere, gentle winds dominate N of 18N, with light and variable winds to the south. Seas are moderate, except slight S of 18N and in the Gulf of California. For the forecast, fresh to strong N winds in the Gulf of Tehuantepec will subside to gentle this morning. The surface trough just southwest of the Revillagigedo Islands will keep thunderstorms near the islands through Thu. Moderate to fresh N winds will pulse nightly in the northern Gulf of California through Thu night. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Surface ridging extending across the northern Caribbean supports moderate to fresh NE winds and moderate seas in the Gulf of Papagayo. S of the monsoon trough, gentle to moderate S to SW winds and moderate seas prevail. Elsewhere, mainly winds with moderate seas in slight swells prevail. For the forecast, moderate to fresh gap winds will persist near the Papagayo region into Thu night. Moderate or lighter winds and slight to moderate seas are expected elsewhere through the weekend. ...REMAINDER OF THE AREA... A mid-level trough is noted N of 20N between 120W and 130W, inducing scattered moderate convection from 22N to 27N between 119W and 128W. A surface trough is from 20N119W to 11N123W. Scattered moderate convection is in the vicinity of the trough between 110W-124W. Broad and weak ridging extending south from a 1028 mb high pressure centered off Oregon is supporting gentle winds across the basin, with moderate seas. A zone of moderate NE winds and rough seas, in primarily NW swell, is noted W of 118W and N of 07N. For the forecast, the large NW swell causing rough seas W of 118W and N of 07N will gradually decay through today. Thereafter, moderate seas will prevail into the weekend. Moderate to fresh trades will dominate N of the ITCZ to 20N and W of 120W through the week, with moderate or weaker winds elsewhere.