Forecast Contours near British Columbia Continue to Change

john's picture

Below are shown screen shots from before last saturday's M7.7 earthquake, compared to screen shots from yesterday and today.  It can be seen that the forecast contours continue to increase in size.  In the NTW forecast, this is because the large increase in the number of smaller earthquakes (aftershocks) must inevitably lead to larger events so that the Gutenberg-Richter relation must eventually be obeyed.