As far as I can tell, this expected earthquake has not yet occurred.

Some additional data need to be processed before Chart A on the Data.html Web page is updated.

That Web page has now been updated with the following drawing that proposes how strain builds in fault zones and how EM Signals are being generated. It shows one of the reasons why it can be so difficult to make accurate time window determinations for expected earthquakes.

• Fault Zone Strain and EM Signals