The USGS reported that during 29 December-5 January 2008, low-level steaming and sulfur dioxide emission from Anatahan were visible on satellite imagery. Seismicity briefly increased on 2 January and then diminished. A report suggested that the lake level in the E crater had been dropping since September. The Volcanic Alert Level remained at Advisory and the Aviation Color Code remained at Yellow.
Source: Emergency Management Office of the Commonwealth of the Mariana Islands and the US Geological Survey Hawaiian Volcano Observatory “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”