Gut Check: Will California be ready for the big one?

After a 5.1 earthquake hit Southern California on Friday, many are wondering when the next one will be

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March 31, 2014, 8:15 AM EDT / Updated March 31, 2014, 8:15 AM EDT

By MSNBC staff, MSNBC staff

After a 5.1 earthquake hit Southern California on Friday, many are wondering when the next one will be.