She says more than 3,000 of them have now been recorded in the Searles Valley sequence, including Friday's 7.1
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While some of the aftershocks were of lower magnitude, ranging from 2-3, there were also sizeable quakes registering as high as 5.4.
Here's a map of where the quakes have been striking, and their size:
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Experts predict the seismic activity to mellow out, but it never hurts to be prepared.
Here are some tips for what to pack in your earthquake emergency kit.