These structures give us absolutely the most protection of any structure that can be built at a reasonable price. The worst tornadoes will bounce off the Monolithic Dome. It may take out the windows, doors and tear up the surface, but the concrete structure will still be there. A hurricane means absolutely nothing to a Monolithic Dome. It is only an inconvenience to the shell itself.
Hurricane shutters are available to cover the windows and mitigate losses from wind borne objects.
Earthquakes don't even bring a Monolithic Dome up to design loads. Even beyond its actual safety is the feeling of safety. The feeling of safety may be the best reason for building a Monolithic Dome. You find yourself watching and enjoying the thunderstorms because you are not afraid of them. You are inside your rock - safe and secure.