Clearly all of these things would be considered SHTF.
Depending on which situation it is, I'd get my ass out of Urbania in different time frames.
For example:
Nuclear Attack - I'd be dead or severely burned by now, as Minnesota has a LOT of weapons R&D companies/facilities. If not dead, I'd get the hell out of dodge if able to do so. Then seek medical help.
Local Riot - Been there, done that. Genetics conventions 1.5 years ago caused rioting in downtown Minneapolis right outside my 1st floor office window. I witnessed police subduing (read beating) rioters who were ripping the shit out of our property & defacing nearby buildings. I brought my BOB to work and in the office that week. Also, cyanide cannisters were found in two downtown locations, placed there by these rioters. AKA I'd stand my ground.
Complete breakdown - Get the Fuck out of dodge with my BOB as fast as possible.
Invasion - See above (breakdown), but once I got to my REAL home, I'd gather up a local militia squad & save the lives of these retreaded liberals here in Urbania.
Other situations to consider for SHTF:
Airliners smashing buildings
Electrical meltdown (read massive electricity failure for potentially 1 week)
Someone breaking into my apartment (can we say "Bump Fire anyone coming through my door?")
Social/Societal breakdown.
Endoctrination of draconian gunlaws by Californistani copycat legislators (Read I'd leave the state & live in TX, AZ, or AK)
-inuhbadnayburhoodwheretshtfweeklyandimreadyforanything!