© NASANASA's Aqua satellite captured Nabro's ash plume blowing westward into Ethiopia on Wednesday.
Air transport was disrupted in the immediate region, and briefly threatened to stream into airways of the Middle East.
The Toulousse Volcanic Ash Advisory Center and the Joint Air Force & Army Weather Information Network reported that the plume rose to an altitude of 35,000 feet, and consisted mainly of sulfur dioxide.
The bright white color of the plume suggests it contains a high concentration of water vapor as well.
Nabro is one of many ancient volcanic calderas in the most northeastern part of the East Africa Rift Valley region.
Nabro is one of the RIFT volcanoes that are candidates for the traumatic die off that reduced the early hominid population down to ONE mitochondrial EVE and her family / tribal relatives.