The West has been rocking lately, and it has nothing to do with loud guitar music.

Several earthquakes have struck the region this week, including two more Friday near the California-Mexico border.

The first quake struck at 11:31 a.m. Friday in an area about 16 miles south of Mexicali, a Mexican border town. Its magnitude was measured at 4.7.

The second quake, a magnitude 4.1 temblor, hit three minutes later about 8 miles west of Ocotillo, an unincorporated community in east San Diego County.

That comes on the heels of a magnitude 5.0 quake on Tuesday that hit an area about 21 miles southeast of Mexicali. No injuries were reported in that quake.

The West's largest recent quake registered 6.0 magnitude in northeastern Nevada. That quake struck Thursday and damaged hundreds of homes, toppled chimneys and reduced part of a historic district to rubble, but no serious injuries were reported.

In the two quakes that struck Friday, San Diego Sheriff's Lt. William Donahue says there were no immediate damage or injury reports on the U.S. side of the border.

The Associated Press contributed to this report.