Tropical Storm Vance remains offshore near Jalisco

Tropical Storm “Vance” remains far from land, but its slow movement is strengthening conditions for heavy rain, wind, and high waves across parts of western and southern Mexico. At 21:00 Central Mexico time, one report placed Vance’s center approximately 550 kilometers south of Cabo Corrientes, Jalisco, while another placed it approximately 474 kilometers south of Cihuatlán. Reports also differed on the storm’s position south of Manzanillo: one placed it approximately 455 kilometers south-southwest of Manzanillo, while CONAGUA Clima stated that Vance was 445 kilometers south-southwest of Manzanillo, Colima. Vance was moving west at 7 kilometers per hour, with maximum sustained winds of 85 kilometers per hour and gusts of up to 100 kilometers per hour. The vortex had active cloud bands and was moving over Pacific waters off the Jalisco coast. Its slow movement means that it remains for several hours off the Mexican Pacific coast.

Along the coasts of Jalisco and Guerrero, sustained winds of 10 to 20 kilometers per hour and gusts of 30 to 50 kilometers per hour are expected. Waves are expected to reach 2 to 3 meters. Along the coasts of Colima and Michoacán, sustained winds of 20 to 30 kilometers per hour, gusts of 40 to 60 kilometers per hour, and waves of 3 to 4 meters are expected. Heavy rainfall of between 25 and 50 millimeters is forecast for southern Nayarit, western Jalisco, Colima, the Michoacán coast, and southwestern Guerrero. The forecast rainfall could cause landslides, while rainfall associated with Vance was expected to affect portions of western Mexico during much of the week. The storm’s moisture flow continues to feed precipitation over the coast.

Preventive work includes patrols in vulnerable coastal localities, assessments of landslide-prone areas and low-lying settlements, and continuous monitoring of accumulated rainfall and water levels in the main tributaries. Operational brigades are also monitoring waves on public beaches. The coordination takes place in strategic municipalities including La Huerta and Cihuatlán, directly with personnel from the Coordinación Nacional de Protección Civil. Rescue specialists said preventive patrols in Costa Sur would continue until risks from wind, storm surges, or landslides affecting road infrastructure were ruled out. Aid authorities asked the public to avoid crossing swollen rivers during rainfall and to obtain information only through official channels such as the Jalisco Alerta platform.

Vance recently weakened from a Category 1 hurricane to a tropical storm. Its structure degraded significantly, and its center became separated from the convection. The storm was forecast to weaken only gradually over the next several days, although strong westerly to southwesterly wind shear was expected to persist and increase. The forecast called for Vance to become post-tropical around 72 hours, with a forecast of dissipation at 0000 UTC on October 31.

For visitors in or near Costa Sur, the practical next step is to check Jalisco Alerta before traveling, avoid swollen rivers during rainfall, and monitor conditions at public beaches.