Increased seismicity and recent satellite detections of significant sulfur dioxide emissions forced the Alaska Volcano Observatory (AVO) to increase alert levels for Korovin volcano on October 28, 2020. The Aviation Color Code was raised to Yellow and Alert Level to…
Seismic activity at Pavlof volcano has increased on September 21, 2020, prompting the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and Alert Level to Advisory. While this does not necessarily mean that an eruption is likely or…
Earthquake activity at Great Sitkin volcano has increased over the past month and is now above background levels, forcing the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and the Alert Level to Advisory at 20:58 UTC on February 26,…
A series of small explosions and tremor bursts have been detected in seismic data at Semisopochnoi over the past 7 hours and are continuing, representing a significant uptick in activity, the Alaska Volcano Observatory (AVO) reported at 09:19 UTC on February 15,…
Starting at about 09:30 UTC (00:30 AKST) on January 19, 2020, the eruption at Shishaldin volcano in Alaska intensified, and about 13:30 UTC began generating a more ash-rich volcanic plume. The Aviation Color Code was raised to RED and the volcano Alert Level to…
Ash eruption at Shishaldin continues and has intensified as shown in satellite and lightning data, the Alaska Volcano Observatory (AVO) reported at 21:33 UTC on January 7, 2020. Satellite data suggest the ash cloud is as high as 8.2 km (27 000 feet) above sea level…
Seismic activity at Pavlof volcano, Alaska has increased over the past several days, forcing the Alaska Volcano Observatory to raise the Alert Level to Advisory and the Aviation Color Code to Yellow at 20:43 UTC on December 28, 2019. Pavlof is a snow- and…
The Alaska Volcano Observatory (AVO) raised the Aviation Color Code for Shishaldin volcano to ORANGE and the Alert Level to WATCH on October 17, 2019. Satellite observations indicated that a lava effusion event began on October 13 and is likely continuing. The…
The Alaska Volcano Observatory (AVO) raised alerts for Veniaminof volcano after pilot reports of steaming coincided with low-level tremor recorded at the volcano at 20:30 UTC (12:30 AKDT). These observations mark a departure from recent background activity – the…
The Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano, the observatory said 21:09 UTC on July 12, 2019. The last eruption of this volcano took place in 2015 (VEI 1). This change is based on…
