Disaster-Causing Demons

Japanese Belief in Disaster-Causing Demons Demons in Japanese lore wander between the living and the dead; some demons do good, and some wreak havoc. Demons have supernatural powers, but they also have the magical ability to affect natural phenomena. According to Japanese belief, demons are the root of all disasters, both natural and man-made. – Pad of Definitions (1.04 Phantom Traveler), Official Website

Episodes

1.04 Phantom Traveler

"Well, that's not exactly true. You see according to Japanese beliefs, certain demons are behind certain disasters, both natural and man-made. One causes earthquakes, another causes disease."

Sam and Dean deal with a particular demon that has an affinity for causing disasters, specifically crashing planes. Sam and Dean are able to stop the demon on a flight, by restraining the possessed co-pilot and attempting to exorcise it. The demon escapes into the plane, causing it to nose dive, but is stopped from causing another crash when Sam finishes the exorcism rites.

8.07 A Little Slice of Kevin

"And at the same time he vanished, a surprise tornado hit, lasted maybe 20 seconds, then, uh... shazam! Back to perfect weather."

In Crowley's bid to kidnap all known future prophets, disasters are caused by demonic omens as the demons take the potential prophets.