September 3, 2013:
Update: 8:45pm Eastern Time
A 6.5 earthquake has struck Japan and a 2nd significant quake has hit the same Canadian location.
The watch score is raised to 7, with the west coast of North America having a local watch of 8.
Update: 5:45pm Eastern Time
Earthquake Watch Score: 6, trending up. Per this morning’s news, the trend upward has begun. This should be a shortlived uptick over the next 24-48 hours.