California earthquake: San Francisco hit by 4.5 earthquake – Threat of BIGGER quake rises?

In Walnut Creek, the shaking was violent enough to knock CDs from a shelf.

Assistant Chief Chris Bachman of the Contra Costa County Fire Protection District said there were no reports of injuries or property damage related to the earthquake as of 11pm local time.

Following this earthquake, one seismologist has warned this could be a precursor to a larger earthquake.

Seismologist Lucy Jones said on Twitter: “Because any quake can be a foreshock, there’s a slight increase in the chance of a bigger quake for the next few days, at the same location near the Calaveras fault.”