Jim Webster writes
yes, when you look at how much reserve stock is available in some towns, two
or three days cut off with snow would be a major issue

Hmmm...

More true than one would want to know about. Few people store more than
a few days of anything. Stocks of dried foods (flour, pulses etc) are
often zero these days.

A situation where vast areas of the country were cut off (eg 1963) would
actually be life threatening on a mass scale.

Also, people seem to hoard-buy things like bread rather than dried
foods.

--
Oz
This post is worth absolutely nothing and is probably fallacious.