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Mount St. Helens

Mount St. Helens
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Mount St. Helens

Published Mar 16, 2005

Volcanoes

Mount St. Helens
Image

Mount St. Helens

Published Mar 15, 2005

Image of the Day Land Volcanoes

Mount St. Helens
Image

Mount St. Helens

Published Oct 15, 2004

Volcanoes

Mount St. Helens
Image

Mount St. Helens

Published Oct 13, 2004

Volcanoes

Lava Dome on Mount St. Helens
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Lava Dome on Mount St. Helens

After more than a decade of inactivity, Mount St. Helens rumbled back to life in September 2004. An ongoing series of tremors within the volcano coupled with upward movement of magma toward its caldera prompted geologists to issue a Level 3 alert on October 2, stating that Mount St. Helens could experience a moderately severe eruption at any time. In order to help geologists and volcanologists assess the nature and magnitude of the risk, on September 24, 2004, NASA flew a low-altitude aircraft carrying the MODIS/ASTER Airborne Simulator (MASTER) directly over the volcano to obtain high-resolution images of its caldera.

Published Oct 7, 2004

Image of the Day Heat Land Volcanoes

Mount St. Helens
Image

Mount St. Helens

Published Oct 5, 2004

Volcanoes

Mount St. Helens
Image

Mount St. Helens

Published Oct 5, 2004

Land Volcanoes Remote Sensing