Tropical Storm Priscilla Forms Off Mexico's Coast, Watch Issued

Tropical Storm Priscilla Develops in Eastern Pacific

Tropical Storm Priscilla has officially formed in the Pacific Ocean off Mexico's southwestern coast, prompting a tropical storm watch for significant portions of the coastline. The storm, which is the 16th named system of the 2025 Eastern Pacific hurricane season, developed on Saturday, October 4, 2025.

According to the Miami-based National Hurricane Center (NHC), Priscilla was initially located approximately 285 miles (460 kilometers) south-southwest of Manzanillo. At the time of its formation, the storm exhibited maximum sustained winds of 45 mph (75 kph). The NHC characterized Priscilla as a 'large tropical storm,' with tropical storm-force winds extending outward up to 140 miles (220 kilometers) from its center.

Coastal Watch and Projected Path

A tropical storm watch has been issued for the southwestern Mexican coast, specifically from Punta San Telmo to Punta Mita. Residents and authorities in this region have been advised that tropical storm conditions are possible through Sunday and Monday.

Priscilla's initial movement was recorded as northwest at approximately 7 mph (11 kph), though some reports indicated a slower speed of 3 mph (6 kph). Forecasters anticipate a slow northward drift initially, followed by a faster northwestward motion beginning Monday. The storm's center is expected to remain offshore while tracking generally parallel to Mexico's southwestern coast over the coming days.

Expected Intensification and Potential Impacts

The NHC projects that Tropical Storm Priscilla is likely to strengthen, with forecasts indicating it could reach hurricane status by Sunday night or early Monday. Favorable conditions, including warm sea-surface temperatures and strong upper-level divergence, are expected to support this intensification.

Coastal areas are bracing for several potential impacts. Heavy rainfall associated with Priscilla is expected to affect southwestern Mexico through Monday, which could lead to flash flooding, particularly in higher terrain. Additionally, swells generated by the storm are affecting portions of the southwestern Mexican coast and are forecast to reach west-central Mexico and the southern Baja California peninsula by Monday. These swells are likely to create life-threatening surf and rip current conditions.

Broader Context of the Hurricane Season

Priscilla's formation occurs during a busy period for the Eastern Pacific. Another tropical storm, Octave, is also active in the Pacific, though it is meandering farther from shore and is not expected to make landfall, with no coastal watches or warnings in effect due to that system. The ongoing activity underscores the peak of the 2025 Eastern Pacific hurricane season.