Tag Archives: semisopochnoi

Great Sitkin & other rumblings

The growing lava dome on Great Sitkin; Photo credit: AVO/Dave Ward (8/4/21)

I had to share this shot from the Alaska Volcano Observatory and photographer Dave Ward. Great Sitkin has been at Level Orange and the lava dome has been growing since mid-July. According to AVO, the dome is now 100 meters across. What are the odds of having such a clear day out on Great Sitkin Island? Wonderful shot by Mr Ward.

Great Sitkin has been active most of the summer, although that lava dome build up has occurred in the last couple of weeks.

The glow of Great Sitkin at night. Photo credit: AVO/Peggy Kruse

Both Pavlof and Semisopochnoi Volcanos are also at Level Orange. Pavlof is known to erupt with little to no warning, and it is showing elevated seismic activity, and at least one ash eruption. Explosions and elevated seismic activity on Semisopochnoi Island also continues. At least one ash eruption dissipated quickly, and sulfur dioxide emissions have been detected by satellite.

Cleveland Volcano rounds things out at a Level Yellow. Some seismic activity, but no reported ash eruptions.