Not necessarily, but yes, the common elements would all be included therein. Stuff like gravity, tide, wind, tectonics, combustion, and any combination of those. For instance, my favourite is the flaming hurricane wave; where there's a great outward compression caused by a circumstantial combination of tropical winds, arctic winds, an oceanic earthquake, and the spontaneous transformation of urine into white phosphorus caused by an undersea magma vent.
< Throw in a comet hitting the earth and I just invented the COOLEST DISASTER EVER.
Can you think of a cooler one?