Seismic activity and it could affect the US

There has been a earthquake off the coast of japan registered 5.7. Not bad right but look a bit deeper ... That activity sends ripples through the earth causing other activity... Right . Ok about 60 or so minutes after that activity off the coast of japan there was activity in the hawain islands ... Notably less on the rictor scale at 2. Something.
The danger lies in the wave caused by this activity that could wash away the central and southern California shores . Damages in the millions even billions and of course "known" casualties and the more plentiful and less talked about "unknown" casualties
Brace yourself it is just the beginning