Tropical Storm Hernan gained strength on Thursday as it churned far off Mexico's Pacific coast.
Hernan could reach hurricane strength over the next two days, the National Hurricane Center in Miami reported.
The storm's winds have increased to almost 60 mph (95 kph), but it was moving west-northwest at about 11 mph (17 kph) and heading further out to sea, the AP reported.
Early Thursday, Hernan was located about 650 miles ( 1,050 kilometers) south-southwest of the southern tip of the Baja California peninsula.
Hernan is the eighth named storm of the Pacific hurricane season.