Veniaminof Volcano Alert

Veniaminof volcano, Alaska update – (GV – June 10 10:39 UTC)
At daylight the activity cloud can well be seen on the FAA webcam at Perryville. The image below dates from 05:22 Local time (=13:22 UTC).

FAA image

Veniaminof volcano, Alaska alert increase – (GV – June 10 10:39 UTC)
Over the past two days, AVO has detected gradually increasing seismic tremor beneath Veniaminof. They therefore raised the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. Clear web-camera and satellite views currently show nothing unusual at the volcano. Similar seismic activity has been associated with ash emissions at Veniaminof in the past, most recently in 2005.
Yesterday seismic tremor continues at Veniaminof. Clear web camera views showed a steam plume over the past 24 hours, though it is difficult to see in daytime views. AVO has received no other reports of activity.
Update at the time of writing : Activity continues like we can see on the webcam images below. A smoke plume (steam and/or ash is difficult to see) is visible on these webcam picture (Perryville NW).
The seismogram shows a serious earthquake a little after 8 UTC. This is a far out in the sea earthquake which has nothing to do with the volcano. This was the earthquake which is viewable on the seismogram.

Some history : The volcano was the site of a colossal (VEI 6) eruption around 1750 BC. This eruption left a large caldera. In modern times the volcano has had numerous small eruptions (over ten of them since 1930); these are located at a cinder cone in the middle of the caldera.
Veniaminof has one of the highest elevations of Alaskan volcanoes. Partly for this reason, it is covered by a glacier that fills most of the caldera. Because of the glacier and the caldera walls, there is the possibility of a major flood from a future glacier run.