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Originally Posted by Spregovori

http://earthquake.usgs.gov/earthquak...uakes_all.html

This site has some info. Seems that in past days there has been a lot of seismic "happening" It might be that this is "common" or not...would need to ask an "expert"

i have asked a couple of "amateur experts" , and they assure me this is normal...

a necessary release of tension