The yellowstone supervolcano will erupt relatively soon
when that happens
well
It's pretty bad, the sun won't be here for a few months. Read the "Ashfall" series
iirc, it's only supposed to totally blot out the sun across a portion of central North America, mostly "flyover states"
that's based off of a ten year old source, though. I don't know if the predicitons are different now.
but yeah asteroids are terrifying
that's why there are so many crazy plans for artificially diverting ones that are on an immediate collision course with earth
literally anything would be better than an asteroid, so governments are more or less willing to spend lots of money to make sure we're all able to not be flattened by space rocks from space.