The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to Orange and the Volcano Alert Level to Watch for Veniaminof volcano at 21:29 UTC on September 4, 2018. The last known eruption of this volcano took place in 2013. The decision to raise alerts…
The Alaska Volcano Observatory raised the Aviation Color Code and Alert Level for Great Sitkin stratovolcano to Yellow/Advisory on July 1, 2018, following another increase in the number of earthquakes under the volcano. The last known eruptive episode of this…
The Alaska Volcano Observatory has raised the Aviation Color Code for Cleveland volcano from Yellow to Orange on June 26, 2018, after detection of small lava flow inside summit crater. The last detected explosive activity at Cleveland volcano occurred May 5, 2018….
Seismicity at Alaska's Great Sitkin volcano has been at elevated levels over the past couple of days, followed by a signal that may represent a short-lived steam explosion on June 11. The last known eruption of this stratovolcano took place in 1974. Seismicity…
A small explosion took place at 05:49 UTC at Cleveland volcano, Alaska on May 5, 2018. A small ash cloud was produced rising up to 6.7 km (22 000 feet) above sea level, drifting to the southeast. A few small earthquakes were also recorded at the volcano during the…
A new explosion was detected on Alaska's Cleveland volcano on April 4, 2018, prompting authorities to raise the Alert Level to Watch and the Aviation Color Code to Orange. It was a small explosion, detected using local seismic and infrasound sensors at 11:55 UTC…
A new explosion was detected at Cleveland volcano, Alaska at 13:20 UTC on December 13, 2017. AVO raised the Aviation Color Code back to Orange. The explosion produced an eruption cloud that was observed in satellite data to an altitude of 6 km (20 000 feet) a.s.l….
Due to increased seismic and infrasound activity recorded over the past few weeks at Shishaldin volcano, the Alaska Volcano Observatory (AVO) raised the Aviation Color Code for the volcano to Yellow and the Alert Level to Advisory on Wednesday, December 6, 2017. The…
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code and Volcano Alert Level to Yellow/Advisory on November 22, 2017, after recent reports of robust steaming and a several month period of elevated earthquake activity. Historical eruptions have…
Strong northwest winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes have picked up loose volcanic ash erupted during the 1912 Novarupta-Katmai eruption and carried it to the southeast over the past couple of days and especially on November 13….
