It is likely there will be a major earthquake hitting west coast at any time. All signs are now pointing to an imminent quake, which will significantly change the topography of the west coast. This is truely an earth-shaking event. The impact on the US and world economies will be incalculable.
There may well be such an event on the west coast in the near future. However, there has never been a truly major one within 20 miles of where I live. The closest was the Long Beach temblor in 1933 which was 22 miles from where my 1.377 square-foot mansion lies. Other good-sized shakers have occurred in the north end of the San Fernando Valley which is about 30 miles away.