Mount St. Helens, Washington, USA

On 21 February, CVO lowered the Alert Level for Mount St. Helens from Watch to Advisory and the Aviation Color Code from Orange to Yellow. Comparison of photographs taken by remote cameras during late January to mid-February 2008 showed no evidence of extrusion. In addition, very few earthquakes were recorded since late January, gas emissions were barely detectable, and daily ground-tilt events stopped.

Source: Cascades Volcano Observatory – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”

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