Hurricane Celia, the first of the 2010 Pacific season, has gained strength off the southeastern Mexican coast, the US-based National Hurricane Center said.
Packing winds of 150 kilometres per hour and higher gusts, Celia was centered some 830 km off Manzanillo, Mexico at 0230 IST.
However, Celia was located so far off land, that "there are no coastal watches or warnings in effect," the NHC said in a hurricane advisory.
The Category One storm was expected to continue its path and show some strengthening over the next 48 hours, it added.
The other major storm to strike the Pacific so far this season was Tropical Storm Agatha, which slammed into Guatemala in May, unleashing heavy rains and floods that left some 275 people dead or missing across Central America.