I heard in the middle of the night that this volcano has begun a violent eruption phase. It is located on the Alaskan Peninsula. What I heard was that the ash plume has risen to over 20,000 feet and will present dangers to air traffic in that part of the globe. The topography of the volcano is nearly a perfect cone shape. It is historically eruptive toward the South. To the Southwest, about 20 kilometers away is another volcano, named Little Pavlof. The warm ground area (2007 data) indicates any pyroclastic flows this time might head Eastward. Just thought I'd send out a heads up since the news is all war and political skullduggery coverage.
The links below depict an aerial photograph (courtesy of the USGS) and a topographical map (courtesy of Peakbagger)

http://www.avo.alaska.edu/images/image.php?id=13729
Citation Information:
Image courtesy of AVO/USGS.
Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.

http://www.peakbagger.com/peak.aspx?pid=403
This map and data courtesy of Peakbagger.com and Googlemaps

Today's news had one brief citing of this event.
An update: Mt Pavlof is still spewing it's ash plume to 20,000 feet. Alongside it, Little Pavlof has begun erupting too! I could find no text detailing simultaneous eruptions of the two volcanoes (though I admit I didn't look too hard). This may yet turn into a much larger historical event. And maybe not.