Tropical Storm Sergio strengthened into the 10th hurricane of the year in the eastern Pacific on Wednesday, but was projected to remain well out at sea.

Sergio, with winds of nearly 75 mph, was located 480 miles south of Manzanillo, Mexico, and was creeping southeastward at 2 mph, the U.S. National Hurricane Center in Miami said.

Sergio was expected to stay over water, parallel to the Mexican coast, over the next five days. A small, compact hurricane, its winds extended only 45 miles out from the center. Tropical storms become hurricanes when wind speeds reach 74 mph.

Click here to track Sergio at the NOAA.

The Associated Press contributed to this report.