Updated

A pair of minor-to-moderate offshore earthquakes have struck the northern California coast, but there were no reports of any damage or injury.

The U.S. Geological Survey says in a revised preliminary report that the first quake had a magnitude of 5.1 and struck at 2:27 a.m. Sunday at a depth of about 11 miles.

It was centered some 41 miles southwest of Eureka and 208 miles northwest of Sacramento.

The second was a magnitude-4.1 quake that struck one minute later farther south about 40 miles west of Santa Rosa and 74 miles northwest of San Francisco at a depth of about 3 miles.

Sheriff's dispatchers in the nearest affected counties of Humboldt and Sonoma say they have received no word of injuries or damage.

Click here for more from the USGS Web site.