Tag Archives: AVO

Timing is everything

An eruption plume from the Great Sitkin volcano on the Aleutian Chain

Volcanos world-wide seem to be getting a bit anxious of late, and Alaska has three rumbling right now. The Great Sitkin volcano, which dominates the skyline of Great Sitkin Island, erupted on May 25. Lauren Flynn of the U.S. Fish & Wildlife Service captured this image as Great Sitkin erupted. Flynn was aboard the Research Vessel Tiglax at the time.

Great Sitkin Island was a fuel depot during WWII. The island lies between Adak and Atka, and is roughly 11 miles long by 10-1/2 miles wide. The Great Sitkin volcano rises to a height of 5710 feet above sea level.

Photo credit: Lauren Flynn/USF&WS/AVO


Veniaminof goes Orange

Mount Veniaminof; Photo credit: AVO/Allan Lerner

Mount Veniaminof, which is located on the Alaska Peninsula, erupted last Thursday. The ash plume that exploded from the volcano did not reach 10,000 feet. Veniaminof last erupted in the fall of 2018.

Mount Veniaminof is a rather active stratovolcano, having erupted at least 14 times in the past 200 years. It is surrounded by a 25 square mile ice field. According to the National Park Service, the glacier is the only one known in North America with an active volcano at its center.

Image credit: AVO/Hannah Dietterich

As of 7 March, Veniaminof continued to show an ash plume via satellite imagery. Mount Veniaminof rarely shows itself for the camera. The volcano is visible only one or two days a year, the rest of the time, Veniaminof is shrouded in clouds and fog.


Mount Veniaminof


Mount Veniaminof letting off some steam, 25 September 2018; Photo credit: AVO/Mari Peterson

Mount Veniaminof, the glacier covered volcano on the Alaska Peninsula, has been erupting since early September. The Alaska Volcano Observatory reports that lava is still flowing from the caldera this week. The volcano last erupted in 2013.


ESA Sentinel-2 image of Veniaminof, showing lava flow on the south flank of the volcano. Photo credit: AVO/USGS

Veniaminof sent a plume of ash, 13,000′ into the air in late November, but that action has come to a stop, at least for now.

Currently joining Veniaminof on AVO’s Orange Alert List, is the seemingly always active Mount Cleveland.