It began Wednesday, July 2 with an unusual “swarm” of small quakes in the Frazier Mountain Communities region west of the Interstate 5 Grapevine. On Thursday, the 4th of July, a magnitude 6.4 earthquake hit. Then at 8:19 p.m. Friday, July 5 a magnitude 7.1 quake struck 11 miles northeast of Ridgecrest near the China Lake Naval Testing Grounds, as shown in this CalTech seismographic readout transmitted by KGET-TV Bakersfield.