The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to Red and the Alert Level to Warning for Semisopochnoi volcano on Friday, April 16, 2021, after sustained ash emissions rose up to 6 km (20 000 feet) a.s.l. Satellite data suggest ash emissions…
Low-level ash emissions from the summit of Veniaminof volcano, Alaska were observed in web camera views on April 5, 2021, the Alaska Volcano Observatory (AVO) reported at 20:49 UTC. Because of the renewed activity, AVO has raised the Aviation Color Code to ORANGE…
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code for Cleveland volcano to Yellow and the Volcano Alert Level to Advisory at 21:44 UTC on March 20, 2021. Satellite detections of increased volcanic gas emissions and elevated surface temperatures…
Regional infrasound sensors detected a small explosion at Semisopochnoi volcano, Alaska on March 19, 2021, indicating an increase in eruptive activity. As a result, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to ORANGE and the Volcano…
A high-resolution satellite image acquired on February 7, 2021, shows a second small ash deposit extending at least 3 km (1.8 miles) to the northeast from North Cerberus Crater on Semisopochnoi Island, similar to the first observed on February 6. Clouds obscured…
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…
