That would be on heck of a Black Swan Event.
We'd have a nationwide (worldwide) problem like hurricane Katrina was in New Orleans. Is it even practical for the government to try to have food stocks in storage for such an event?
A half a dozen or so Christian prophetic sources just in the last 3-5 days have sent yet another warning around about looming famine. They first did such with a relatively ‘distant’ in time perspective a decade or 2 ago.
This time, they weren’t sounding like they thought it was a long ways off.