The “Big One” will hit sooner than later. Can we predict when it will hit? The answer is, no. John Vidale, director of the Southern California Earthquake Center, warned the Big One will one day hit California. All we know that it will happen, and we have to be prepare for it and the aftermath of the earthquake.

For more info, please read the original article by Express UK:
https://www.express.co.uk/news/science/1021589/California-big-one-earthquake-san-andreas-fault-ring-of-fire