4.6 Magnitude Earthquake in Santa Cruz Mountains Shakes Bay Area Awake
kqed.org • • general
Key Points:
- A magnitude 4.6 earthquake struck near Boulder Creek in the Santa Cruz Mountains early Thursday morning, jolting Bay Area residents around 1:40 a.m.
- The quake was initially recorded as magnitude 5.1 but was later downgraded by the U.S. Geological Survey (USGS).
- Tremors were felt strongly in South Bay, San Francisco, Oakland, and as far north as Santa Rosa, with reports of a sharp jolt followed by about 30 seconds of shaking.
- No significant damage or injuries have been reported, and no major aftershocks have occurred as of 8 a.m.
- The quake's fault is unclear, with both the San Andreas and Hayward Faults running through the region; USGS estimates a 25% chance of a magnitude 3.0+ quake in the next week, but only a 3% chance of a 4.0+ event.
