I’m not a TEOTWAWKI kind of guy by any stretch. Like most here, believe in a match-up between
likely risks in my little corner of the world and
reasonable preparations for those risks. It’s prudent, it’s fun – and it allows me to rationalize the occasional purchase (for my wife’s benefit).
But, the program reminded me that my planning mostly ignored those couple of events that, though far removed from my home, could somehow impact me in ways I hadn’t much considered. Whether or not you believe the Cumbre Vieja volcano will someday cause a giant dirt clod to slide into the ocean, causing a mega-tsunami, maybe isn’t the point.
Again, the OP was just an exercise to stimulate some thought about events outside our immediate environments, and whether they merit inclusion in our personal preparedness plans.
An aside: the disparity in impact-assessment among those posting is interesting. Ranging from "...it will really only be an inconvenience for most of us" to "...it would cripple us." All from people whose opinion I respect. Small wonder FEMA has a tough time.
For my own part, I think the after-effects would be far-reaching...impact on the economy, financial markets, supply chain etc.
One thing I think we can agree on — every time Mother Nature raises the bar, we're forced to re-examine our thinking and the sufficiency of our collective preparedness.