MIAMI (AP) -- Tropical Storm Blanca is forecast to rapidly strengthen and become a major hurricane later this week over the eastern Pacific.
The storm's maximum sustained winds early Tuesday are near 50 mph (85 kph). The U.S. National Hurricane Center says the storm is expected to become a major hurricane by Wednesday night or early Thursday.
Blanca is centered about 365 miles (585 kilometers) southwest of Zihuatanejo, Mexico, and is moving west around 1 mph (2 kph). A slow and erratic motion is expected over the next few days.
Meanwhile, swells generated by Hurricane Andres are affecting the west coast of Mexico's Baja California peninsula. Andres is headed toward cooler waters and its maximum sustained winds have decreased to near 105 mph (165 kph) with continued weakening expected.
Andres is centered about 890 miles (1,430 kilometers) west-southwest of the southern tip of Baja California.