USGS - Recent Volcano Activity

Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program
  1. AVO Great Sitkin ORANGE/WATCH - Slow lava effusion continues.

    May 25, 2022 20:52 - Eruption of lava continues with elevated surface temperatures and steam emissions. No significant seismic activity was detected over the past day. It is possible that new explosive activity could occur with little or no warning.Great Sitkin is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.
  2. AVO Cleveland YELLOW/ADVISORY - Elevated surface temperatures, steaming, and sulfur dioxide emissions observed.

    May 25, 2022 20:52 - Elevated surface temperatures and a steam and sulfur dioxide gas plume were observed in satellite data over the past day. No significant seismic or infrasound activity was detected.Episodes of lava effusion and explosions can occur without advance warning. Explosions from 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 operational, Cleveland volcano is monitored by only ...
  3. AVO Pavlof ORANGE/WATCH - Low-level eruption continues.

    May 25, 2022 20:52 - Elevated surface temperatures were observed in satellite images over the past day consistent with a continued low-level eruption and effusion of short lava flows on the upper flank. Seismic tremor continues but no explosions or ash emissions were detected.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 can change quickly and the progression to more significant eruptive activity can occur with little or no warning.Pavlof is ...
  4. AVO Semisopochnoi ORANGE/WATCH - Low-level eruption continues. Explosions detected.

    May 25, 2022 20:52 - Low-level eruptive activity continues. Clouds obscured satellite and web camera views of the volcano over the past day. Seismicity remains elevated with intermittent tremor. Several explosions were detected in seismic data over the past day.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 may continue and could be difficult to detect, especially when thick cloud ...
  5. HVO Kilauea ORANGE/WATCH -  Kīlauea Volcano is erupting within Halemaʻumaʻu crater. The current situations are ...

    May 25, 2022 19:00 - Activity Summary: The summit eruption of Kīlauea Volcano, within Halemaʻumaʻu crater, continued over the past 24 hours. All recent lava activity has been confined to the crater, and current data indicate that this scenario is likely to continue. No significant changes have been noted in the summit or East Rift Zone.Halemaʻumaʻu Lava Lake Observations: Eruption of lava from the Halemaʻumaʻu western vent into the active lava lake and onto the crater floor has continued over the past 24 hours. The active lava lake has shown continuous surface activity, with lake level ...

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