Not a dumb q coming from outside of equake-country, but the answer is definitely "Yes!" When the earth moves, it makes noise. When megatons of rock are breaking and shifting against one another and the shockwaves go billowing outwards through what we otherwise think of as solid matter, yes, it makes noise. The ones I've experienced sounded, and felt, like a heavily loaded but short freight train, or an 18-wheeler, rumbling by.
5.6 is considered moderate, but "moderate" starts in the mid-3's and the scale is logarithmic, so 5.6 is getting up there in the vicinity of "big".



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On the 6th floor Oakland, did not feel it.
