Two Quakes Strike Where San Andreas Meets Garlock Fault
USGS logged a magnitude 4.1 and a 4.3 within hours of each other, well short of any historic rupture threshold.
- The 4.1 struck near Frazier Park, the 4.3 near Johannesburg, both in Kern County.
- USGS's July 12, 2026 catalog entries carry no 'unlocked' designation or warning level.
- The 'fault unlocked' claim traces to a geophysicist's social media post, not USGS.
Why it matters: The agency responsible for monitoring this fault recorded two moderate quakes and issued no warning.
USGS Earthquake Hazards Program (event catalog) ↗ · Jul 14, 20267/14/26 · ✓ Checked✓ Check