Numbered on Richter scale
Levels 01-05 - 4.5
Parked cars rock
Levels 06-10 - 5.4
Trees shake, chairs fall over
Levels 11-15 - 6.5
Chimneys, columns, monuments and weak walls collapse
Levels 16-19 - 7.5
Many buildings destroyed; railway lines bend
Level 20 -Hero8.2
Nothing survives; the ground physically waves.
Your waves can effect 10 ft. + (10 ft./4 levels) around you.
After level 10, if your CoP is positive you can control what in your area of effect is hit; if it is negative you can not.