6.8 Magnitude quake off Japan


A shallow 6.8 quake (Updated: 6.5) occurred just offshore from Japan, about 125km/78 miles from the Fukushima Daiichi NPS.  A small tsunami, one meter or less, should have just hit the shoreline (about 4pm EDT, 5am Japan time).  Damage should be light, however, the acceleration forces on the contaminated water storage tank “shantytown” was in the neighborhood of .05g, which might cause problems with the piping and connections, as well as sloshing around and causing damage that way.  Probably nothing major unless something broke that shouldn’t have – which, given the history of the site, is not comforting.

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