Yes, he nails it right: July 4th had a M6.4 (feels like a 6.9) and the next night a M7.1 (more like a 7.8). There have been quake swarms in Anza, Yucca and Imperial valleys surrounding the San Andreas zone in the Palm Springs area. The California desert has many active faults affected by the Ridgecrest double-event. M7.8 was the highest ever recorded in CA history 3 times: the 1857 Fort Tejon, 1906 San Francisco area and 1952 Kern county (Tejon pass) events. USGS and CalTech gave a week of a seismic watch that expired on the 11th and M7+ earthquake advisory, but a M5 was the strongest (10 aftershocks).
The 1990s was a very active period in seismic history for the Yucca valley-29 Palms: Apr 22, 1992 was a M6.1, June 28, 1992 was a M7.3-6 with a M6.4-6 within 3 hours that morning, and Oct 16, 1999 was a M7.1-3 predicted before the turn of the millennia. The US-Mexico border (Mexicali-Calexico) was where the M7.0-2 tremor shook on Easter sunday 2010, epicentered south of the border. The Anza-Borrego desert had 3 in the M5 range: 2005, 2010 and 2015. I live within the triangle formed by swarms in Landers to Hemet to Brawley. The San Jacinto and Emerson-Landers faults are branches of the San Andreas.
And finally, the San Andreas from Desert Hot Springs down to the Salton sea, as well breaking into more faults in Imperial county is the highest risk for a M7+ quake between now and the end of the year, just like USGS and Caltech believes, if the Ridgecrest-China Lake region isn't their only grave concern. The strongest quakes to hit Southern CA since 2010 and maybe 1882 with the Owens Lake valley event, 1892 Laguna Salada, Mexico, and 1989 Loma Prieta (M6.9-7.1?) events, not to mention the San Fernando Valley's M6'ers in Feb 9, 1971 and Jan 17, 1994 that devastated a metropolitan area like Los Angeles.
