Yeah normal for here, way over cautious, warnings & panic
I'd guess better to be a false alarm than something like that crap
in Indonesia happen Christmas a couple/10 years back
Most of the northern coast or Calif as a whole
most beaches are down below, 50' to 100' or a bunch more in some cases...
Yeah It could cause erosion & slides, wash out roads etc.
they have a lot of that on the 'well beaten coastline' too...
Where most people live is pretty high above sea level, to ground surface too...
There's lots of cliffs & steep rockfaces along the coast,
with a quite a few exception here & there...
Touristy right on the beach & beach oriented communities,
tourist stuff/board walks etc.
Most down south of from San Jose/really Santa Cruze to San Diego,
but still just here & there...
It's not like an Island, in most places here, it has cliffs...
But **** happens though...
I think they mean well, just overly cautious (borderline panic mode) IMO...