This earthquake is the largest instrumentally recorded earthquake in the eastern United States in the last 100 years. The Cornwall, Ontario - Messina, New Earthuake of 1944 and other earthquakes in eastern Canada have been as large and larger. It is timely to compare observed ground motions to various model based predictions. To do this, I will assume an Mw=5.7, which is smaller than the "official" NEIC magnitude, but is a mean of the global GCMT and W-phase Mw=5.8 and the regional moment tensor inversion Mw=5.6.

The format follows that used by Herrmann in his 2011 Seismological Society of America presentation in Memphis.