About 10 years ago we had Hurricane Katrina and the tsunami overseas. News journalists and pundants (as well as many everyday average citizens) were describing these events as "of BIBLICAL proportions". I don't even have to suggest to you what the average JW was thinking.
And of course, this was just a few years after 9/11. A lot of people, not just JW's, were thinking "this has just got to be the end!"
Well within the next ten years there will be new events, bigger events, that will have people believing that "this has just got to be the end!"