“Strengthening is expected during the next couple of days, and the system is forecast to become a hurricane by Tuesday,” the hurricane center said.
The storm's center was located about 1,045 miles (1,680 kilometers) west-southwest of the southern tip of Baja California.
Its maximum sustained winds were clocked at 40 mph (65 kph). It is moving at a speed of 9 mph (15 kph).
Tropical storms have wind speeds of between 39 mph (about 63 kph) and 73 mph (about 117 kph). It becomes a hurricane when the wind speed reaches 74 mph (about 119 kph).