The loss of the ENTIRE “bread basket” of North America (think zero corn or wheat… for starters)
Yellowstone “climate shift” would be the least of our worries
By E. M. Smith
Wiping out most everyone north of Texas and East of California would probably rank higher…
Ash would be FEET thick as far as Nebraska and deep enough in Chicago to kill of most folks. Even NYC and DC would likely be ashed up enough to cause massive respiratory disease.
Then the loss of the ENTIRE “bread basket” of North America (think zero corn or wheat… for starters) would be a big issue for anyone who survived the first blasts.
Yeah, anyone who made it to year 2 might care about how hot or cold it was, but frankly, without a functioning USA government, food supply, military, transport system, or energy system; not many folks will get through the first winter anyway.
How many people today in North Texas could survive without heating / AC / medical care / grocery stores / gasoline / and municipal water? In a minus-whatever winter?
Pretty much the “safe zone” is most of California maybe up to Washington coastal areas, then down across the very south of the south west and along the gulf coast to Florida. Even there, if the wind shifts you get some ash. Folks in Florida can likely survive by fishing and eating ‘gators; as long as the S. Americans and Mexicans are nice to them.