To the surprise of many, CA has not had a major earthquake for about 25 years. If you are curious about earthquake history in CA, you might want to check out this chart: Earthquake Planning in CA ( 1906- 2008);  the time line chart is available to browse here: CAEQ.

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Eric Holdeman is already offering Lessons Learned on his blog; and the ‘quake only happened 2 days ago!