Talk:Earthquake swarm
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Are we swarming? 12-20-2006 3.7 ESE of Berkeley, CA (plus 1 small shock later in the night) 12-22-2006 3.7 ESE of Berkeley, CA (plus 2 small shocks later in the day) 12-23-2006 3.6 ESE of Berkeley, CA (too soon to tell!)
Or is this a precursor to the Hayward Fault ripping open?