It's the most common unit for describing the explosive yield of a nuclear weapon. So, it's a lot smaller than the bombs dropped on Japan in WWII, but a lot bigger than a Davy Crockett. That's a sort-of-useful frame of reference.

The only other things I can think of that would create a similar kind of blast are a volcanic eruption or something like that fertilizer explosion in Beirut in 2020 (~1100 tons TNT equivalent.)