This is quite the graphical display of the shock wave of the Anchorage earthquake felt across the country.

This is another ground motion visualization showing the motion of the ground recorded by the USArray during the Anchorage earthquake (https://t.co/RIcNz4bgWq). #AnchorageEarthquake #earthquake pic.twitter.com/5ZbzvXOj5l

— IRIS Earthquake Sci (@IRIS_EPO) December 1, 2018