Forecasters say Hurricane Jova is gaining strength out in the eastern Pacific Ocean.
The U.S. National Hurricane Center in Miami said early Sunday that Jova had maximum sustained winds of 90 mph (145 kph) and was centered about 350 miles (563 kilometers) west-southwest of Manzanillo, Mexico.
It was moving east at 6 mph (9 kph).
No coastal watches or warnings had been issued, but forecasters expect Jova could become a major hurricane by Monday night or Tuesday and urged those in southwestern Mexico to monitor its progress.
Meanwhile, Tropical Storm Irwin continued swirling in the eastern Pacific, about 835 miles (1345 kilometers) southwest of the southern tip of Baja California.
Irwin had maximum sustained winds of about 45 mph (75 kph) but has prompted no coastal watches or warnings.