Heavy rains are hitting parts of western Mexico as Hurricane Olaf moves north along the country's Pacific coast.

The U.S. National Weather Service warns that the storm, located about 120 kilometers southwest of Cabo Corrientes, could cause dangerous flash floods and mudslides.

Meanwhile, another hurricane that threatened to collide with Hurricane Olaf has been downgraded to a tropical storm.

Forecasters say that system, Tropical Storm Nora, is hovering in the Pacific Ocean, off the Baja California peninsula.

On Mexico's Gulf coast, Tropical Storm Larry on Sunday forced hundreds of people in the southern state of Tabasco to seek emergency shelter before weakening into a tropical depression.