What Comes After Four?

LA Times reports The Big Quake Question: What Comes After Four?

A 4.9 magnitude earthquake centered in San Bernardino County rattled a large section of Southern California on Thursday, the third significant temblor to hit the state in less than a week. While the quake did not cause major injuries or damage, it shook nerves across the region just two days after a 7.2 quake off the Northern California coast prompted a tsunami warning and four days after many residents were jolted awake by a 5.2 quake centered near Anza.

It looks like much of California, and possibly a couple of other blue states, is about to break off and fall into the Pacific