its on a major fault line
they get 2-3 over 5 in that area every week
and have for 1000s of years
it is one of 7 five plusses in the last 24 hours globally
relax
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you can cause earthquakes by fracking.. ask oklahomans. they get 4-5 a week
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the earthquake that anon was all giddy about.. well it is on a fault line and they get around 200 or so a year in that area over 5
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a nuclear incident above ground.. easily get you a 5.. below ground.. possible 6