Last Year, Phoenix, Arizona experienced a large dust storm, also known as a haboob, that caused large amounts of damage and flight delays. The Huffington Post reports that the storm reached heights of around 8,000-10,000 feet and about 50 miles wide in certain areas. Images of the storm reveal what appears to be a huge wall of sand and dust engulfing the city or something out of an apocalyptic film.

A dust storm or sand storm is a meteorological phenomenon common in arid and semi-arid region...

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 t...