When the Yellowstone Caldera goes it’’s good night Irene for pretty much the whole USA.
jm..it will be a global event.
Nobody knows when it will go and IF it will even be a VEI 8 event.
Like I posted. If you want a couple of REAL good youtube sites to watch it is GeologyHub or USGS.
The USGS, like the Army Corps of Engineers are two very good organizations.