re: Possible North Korea nuclear test?
http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/ustqab.php
If this is to be trusted: http://en.wikipedia.org/wiki/Richter_scale
Then it was fairly small- a few kilotons
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http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/ustqab.php
If this is to be trusted: http://en.wikipedia.org/wiki/Richter_scale
Then it was fairly small- a few kilotons