Near-shore tsunamis, those triggered by earthquakes just off the coast, could pose a particularly dire risk for California's heavily populated coastal communities.

A near-certain disaster looms for California, but there are real things people can do to prepare. Here's what to know about the risks.

The Big One: Is California 'overdue' for a devastating major earthquake? A near-certain disaster looms for California, but there are real things people can do to prepare. Here's what to know about ...

California is overdue for a devastating earthquake. Here are some tips if it hits A near-certain disaster looms for California, but there are real things people can do to prepare.

A long-feared monster earthquake off the coast of California, Oregon and Washington could cause some areas to sink by more than 6 feet, dramatically heightening the risk of flooding.

An earthquake with a preliminary magnitude of 5.2 hit Southern California on Monday morning.

California has been rocked by at least nine earthquakes since Thursday, raising fears that the "Big One" could be near.

Northern California residents posted reactions and videos about the earthquake and potential tsunami.

A 7.0 magnitude earthquake was reported in northern California on Thursday, according to the United States Geological Survey.

A 7.0-magnitude earthquake off the California coast briefly triggered a tsunami warning for parts of Northern California and southern Oregon, but the warning was canceled just before noon.

A magnitude 7.0 earthquake was recorded in Northern California, the United States Geological Survey said.