Increased seismicity at Pavlof volcano, Alaska

Increased seismicity at Pavlof volcano, Alaska

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…

Increased earthquake activity at Great Sitkin volcano, alerts raised, Alaska

Increased earthquake activity at Great Sitkin volcano, alerts raised, Alaska

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,…

Eruption at Shishaldin volcano, Aviation Color Code raised to Red, Alaska

Eruption at Shishaldin volcano, Aviation Color Code raised to Red, Alaska

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…

Eruption at Shishaldin intensifies, Aviation Color Code raised to Red, Alaska

Eruption at Shishaldin intensifies, Aviation Color Code raised to Red, Alaska

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…

Increased seismicity, alerts raised for Pavlof volcano, Alaska

Increased seismicity, alerts raised for Pavlof volcano, Alaska

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…

Shishaldin volcano alert levels raised, Alaska

Shishaldin volcano alert levels raised, Alaska

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…

Veniaminof volcano alerts raised, Alaska

Veniaminof volcano alerts raised, Alaska

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…

Increased seismicity, alerts raised for Shishaldin volcano, Alaska

Increased seismicity, alerts raised for Shishaldin volcano, Alaska

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…

Increased seismicity, alerts raised at Semisopochnoi volcano, Aleutians

Increased seismicity, alerts raised at Semisopochnoi volcano, Aleutians

Due to an increase in seismicity above background levels over at least the last 8 hours AVO is raising the Aviation Color Code to YELLOW and Alert Level to ADVISORY at Semisopochnoi. No explosive activity has been detected on the Adak infrasound array and clouds…