Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Sat Oct 31 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 1800 UTC surface analysis and satellite imagery through 2200 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 01N133W. Scattered moderate convection is depicted S of 11N and E of 135W. Scattered moderate to strong convection is S of 07N between 100W and 115W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Fresh to strong N to NE gap winds are occurring over the Gulf of Tehuantepec with seas of 5-8 ft. The pressure gradient between higher pressures over Mexico and a trough along the Gulf of California is supporting moderate to locally fresh S to SE winds over southern portions of the Gulf. Elsewhere, winds are moderate or weaker with 4-6 ft over the Pacific waters, 2-5 ft over the N and central Gulf of California. For the forecast, fresh to strong N gap winds over the Gulf of Tehuantepec will continue through early next week, diminishing Mon night. A developing extratropical cyclone should move into the waters west of the Baja California peninsula and over the N Gulf of California tonight into Sun with strong to near-gale SE to SW winds and seas to 8 ft. Fresh to strong SW winds along with seas of 5-6 ft should occur over the Gulf of California on Sun in the wake of the extratropical cyclone. Moderate or weaker winds will likely return to the offshore waters Sun into Mon. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE to E gap winds are occurring over the Gulf of Papagayo region with seas 5 to 7 ft. Moderate N winds along with seas of 4 to 6 ft are present over the Gulf of Panama. Elsewhere, winds are moderate or weaker. Scattered moderate convection is occurring S of 08N east of 93W. For the forecast, fresh to strong NE to E gap winds over the Gulf of Papagayo region will continue through Mon. Fresh N winds over the Gulf of Panama should continue today before weakening on Sat. Large, long-period SW swell has reached the equatorial waters, and will gradually diminish on Sun. ...REMAINDER OF THE AREA... A 1006 mb low is centered near 26N125W, with a cold front extending southwestward to 15N135W, and a warm front extending from the low to 18N134W. Fresh to strong winds in counter- clockwise flow surrounds the low from 20N to 30N between 119W and 129W, with seas to 8 ft. Moderate to fresh southwest winds are found farther southwest along the cold front. Elsewhere, the pressure gradient between weak ridging north of the region and lower pressure near the monsoon trough is supporting only moderate or weaker trades across the forecast waters. Large, long-period SW swell is expanding northward across the equator to 09N between 87W-134W. Elsewhere, seas are 4-7 ft. For the forecast, the low will become a strong extratropical cyclone and then move slowly eastward through the weekend. The system should move over the offshore zones west of the Baja California peninsula on Sun with winds and seas diminishing by Sun night.