It will not be one or two catastrophic events that will mark an end to human species, it will be incremental steps towards destabilization and dehumanization. Very gradual and very calculated and systematic.
There will be devastation on large scales but it will not necessarily result in complete annihilation. Rather it is a series of events that will eventually lead to societal collapse such as more public shootings, more sickness and illness, and professionals and law enforcement will be overwhelmed. It will not be something that will be apparent to us while we are experiencing it, it will just seem like there is a lot of messed up shit happening. And once it reaches its pivotal point, there will be the ones who disguise themselves as saviors and healers but they will be the ones who direct you into the abyss.
Natural disasters are caused by collective human focus. Or collective focus through consciousness in general. We choose with our own free will to attract things such as earthquakes, tsunamis, hurricanes, asteroids and comets and meteors and such, and we are also in control of the volcanoes under the ground. The only reason there is this anticipation that one of these things will happen is because the human species is at a crossroads and is trying to decide on a collective level whether or not it wants to survive or not. And this uncertainty and disharmony within the human consciousness is what gives rise to natural disasters afflicted upon us in the first place.