Hernan was located 585 kilometers (more than 360 miles) southwest of the tourist port of Manzanillo and was moving in a northwesterly direction, parallel to the coastline, at a speed of 22 kilometers per hour, Mexico's National Meterological Service (SMN) reported at 0300 GMT.
The storm was packing maximum winds of 65 kilometers per hour, with gusts up to 85 kilometers per hours, the SMN said.
The Miami-based National Hurricane Center, which had slightly different figures, warned that Hernan was picking up strength. "Additional strengthening is expected" overnight Saturday to Sunday, "and Hernan could be near hurricane strength by Sunday afternoon," the NHC said....
NASA image of Hernan, July 27, 2014