Earthquake clouds are clouds claimed to be signs of imminent earthquakes. They have been described in antiquity: In chapter 32 of his work Brihat Samhita, Indian scholar Varahamihira (505–587) discussed a number of signs warning of earthquakes, including extraordinary clouds occurring a week before the earthquake. In modern times, a few scientists claim to have observed clouds associated with a seismic event, sometimes more than 50 days in advance of the earthquake. Some have even claimed to accurately predict earthquake occurrences by observing clouds. However, these claims have very little support in the scientific community.
- Curious cloud formations linked to quakes - Distinctive cloud formations were spotted above an active fault in Iran before each of two large earthquakes occurred (New Scientist, 11 April 2008)(subscription required)