The current eruption of Great Sitkin Volcano began with a single explosive event in May 2021. The ongoing eruption of lava at the summit began shortly afterward, in July 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data and web cameras, and regional infrasound and lightning networks.

2 days ago · ALASKA VOLCANO OBSERVATORY DAILY UPDATE U.S. Geological Survey Monday, February 10, 2025, 12:47 PM AKST (Monday, February 10, 2025, 21:47 UTC). GREAT SITKIN (VNUM #311120) 52°4'35" N 176°6'39" W, Summit Elevation 5709 ft (1740 m) Current Volcano Alert Level: WATCH Current Aviation Color Code: ORANGE. Lava continues to erupt slowly in the summit crater of Great Sitkin Volcano.

5 days ago · A map of Mount Spurr, Alaska, showing monitoring stations operated by the Alaska Volcano Observatory and hypocenters of earthquakes that occurred from Jan. 1, 2024, through Feb. 6, 2025. Mount Spurr is about 75 miles (120 km) west of Anchorage. The seismic activity shown on the map is higher than normal and likely reflects intrusion of new ...

Alaska’s volcanoes are distributed under Pacific great circle aircraft routes (traversed by more than 50,000 people per day), and can erupt ash clouds into commercial and recreational airspace. Learn About Hazards

Dec 30, 2024 · A clear webcam view of the volcano from yesterday afternoon showed some bare rock at the actively growing lava dome. No activity was seen in satellite images. The current eruption of Great Sitkin Volcano began with a single explosive event in May 2021.

Field crews from the Alaska Volcano Observatory (AVO) have completed work on seismic monitoring equipment at Mt. Wrangell, bringing enough local stations back online to locate small volcanic earthquakes and detect potential activity above background at the volcano.

Alaska contains about 140 volcanoes and volcanic fields active within the last 2.6 million years (the Quaternary). About 90 of these volcanoes have been active within the last 11,000 years (the Holocene), and more than 50 have been very recently active, within the last 300 years or so.

Sep 16, 2023 · Ash emissions from Shishaldin Volcano captured on an Alaska Volcano Observatory webcam on Sept. 15, 2023. (Courtesy of AVO/USGS) Mount Shishaldin in the eastern Aleutians is erupting, marking...

6 hours ago · Now, scientists say the volcano has about at 50-50 shot of erupting (Alaska Volcano Observatory/Facebook) “Clear views of the volcano showed no unusual activity over the past day.

Jul 26, 2023 · UNIMAK ISLAND, Alaska – The eruption of Shishaldin Volcano in Alaska's Aleutian Islands has slowed down, after explosive eruptive activity occurred at the volcano Wednesday morning. The Alaska Volcano Observatory (AVO) said meteorological clouds up to 20,000 to 25,000 feet above sea level began obscuring views of the volcano beginning at ...