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Eruption of Anatahan
This page contains archived content and is no longer being updated. At the time of publication, it represented the best available science. However, more recent observations and studies may have rendered some content obsolete.
On June 25, 2005, Anatahan Volcano erupted again, continuing its state of elevated seismic activity. According to the U.S. Geological Survey (USGS), the volcano sent a plume of ash and steam 3,600 meters (12,000 feet) in the air. Authorities have placed Anatahan Island off limits until further notice.
In this picture, ash drifts westward across the Pacific from the volcano’s summit. Acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite, this satellite image shows a red outline near the volcano’s summit. The outline indicates an area that is significantly hotter than its surroundings. This thermal spike could result from a fire sparked by the volcano, or by the volcano itself.
Anatahan continues to steam after its largest eruption in recorded history on April 6, 2005. This major eruption was a continuation of its third historical eruption, which began early in January 2005. Anatahan is located in the Northern Mariana Islands in the North Pacific Ocean and has been responsible for blanketing Guam and other nearby islands with volcanic haze.