USGS - Recent Volcano Activity

Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program
  1. AVO Great Sitkin ORANGE/WATCH - Low-level eruption of lava likely continues.

    Oct 2, 2022 19:38 - Low-level eruption of lava likely continues at Great Sitkin Volcano. Seismicity was very low, and satellite and webcam views were obscured by clouds.The terrain is steep near the terminus of the current eruption's lava flows, and blocks of lava could detach without warning and form small rock avalanches in these valleys. These avalanches may liberate ash and gas and could travel several hundred meters beyond the lava flows; they would be hazardous to anyone in those areas.  Great Sitkin Volcano is monitored by local seismic and infrasound sensors, satellite data,...
  2. AVO Cleveland YELLOW/ADVISORY - Ongoing seismic network outage. No activity observed in satellite views.

    Oct 2, 2022 19:38 - An ongoing outage is affecting the seismic network at Mount Cleveland. No activity was seen in satellite data over the past day. Episodes of lava effusion and explosions can occur without advance warning. Explosions from Mount Cleveland are normally short duration and only present a hazard to aviation in the immediate vicinity of the volcano. Larger explosions that present a more widespread hazard to aviation are possible but are less likely and occur less frequently.When the seismic network is operational, Mount Cleveland is monitored by only two seismic stations, ...
  3. AVO Pavlof ORANGE/WATCH - Low-level eruptive activity continues, with ongoing tremor, elevated surface temperatures, ...

    Oct 2, 2022 19:38 - Low-level eruptive activity continues from a vent just below the summit of Pavlof Volcano, on its east flank. Elevated surface temperatures were seen in cloudy satellite views, and a weak steam plume was visible in webcam views. Seismic tremor continued over the past day.Small explosions associated with the current eruption could happen at any time and may be accompanied by small ash plumes within the immediate vicinity of the volcano. The level of unrest at Pavlof Volcano can change quickly and the progression to more significant eruptive activity can occur with little or ...
  4. AVO Semisopochnoi YELLOW/ADVISORY - Seismicity was low; no ash emissions or explosions were observed.

    Oct 2, 2022 19:38 - Seismicity was low over the past day at Semisopochnoi volcano. Satellite and webcam views were mostly cloudy. No ash emissions were observed.Small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity. Small explosions and associated ash emissions could resume and may be difficult to detect during periods of high winds and/or when thick cloud cover obscures the volcano. Ash emissions over the past several years of activity ...
  5. AVO Trident YELLOW/ADVISORY - Elevated seismic activity continues.

    Oct 2, 2022 19:38 - Low-level seismic activity beneath Trident Volcano continues. No activity was observed in coudy satellite and webcam views.Increases in seismic activity have been detected previously at Trident Volcano and other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and other signs of unrest, such as gas emissions, elevated surface temperatures, and surface deformation to precede any future eruption, if one were to occur. AVO monitors Trident Volcano with a local network of seismometers, a webcam, remote sensing data, and regional ...

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