Live Panorama of Kīlauea Caldera from HVO Observation Tower

  • AVO Cleveland YELLOW/ADVISORY - Unrest continues. Seismicity is low. Steam plume seen in satellite and webcam.
    on November 16, 2019 at 9:32 pm

    Nov 16, 2019 21:18 - A steam plume was observed in partly cloudy satellite and web camera views over the past day, but no elevated surface temperatures were observed. No unusual activity was observed in the local seismic or infrasound data at Cleveland over the past day. 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 ...

  • AVO Semisopochnoi YELLOW/ADVISORY - No eruptive activity observed in seismic, infrasound or satellite data
    on November 16, 2019 at 9:32 pm

    Nov 16, 2019 21:18 - Seismicity remains low. No eruptive activity has been detected by regional infrasound data, and no anomalous activity was observed in partly cloudy satellite data over the past day. Semisopochnoi is monitored with an on-island seismic network and remotely by satellite and lightning sensors. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.

  • AVO Shishaldin ORANGE/WATCH - Strongly elevated temperatures and steaming. Overnight incandescent flow on NE flank
    on November 16, 2019 at 9:32 pm

    Nov 16, 2019 21:18 - Low-level eruption continues at Shishaldin Volcano. Strongly elevated surface temperatures and a steam plume extending more than 100 km (>60 miles) to the southeast were observed yesterday afternoon and evening. An incandescent flow down the northeast flank of the volcano could be seen in web camera views overnight. No ash plumes have been detected at Shishaldin over the past day and seismicity declined steeply overnight. Shishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant ...

  • CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.
    on November 16, 2019 at 9:32 pm

    Nov 15, 2019 19:08 - Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of activity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State; and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon. Recent Observations: Activity at the Cascade Range volcanoes remained at background levels throughout the week. Small earthquakes were detected at Mount St. Helens and Rainier, and field crews performed maintenance on monitoring stations at Newberry.

  • HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Seismicity above background; continued summit inflation.
    on November 16, 2019 at 9:32 pm

    Nov 14, 2019 20:06 - Activity Summary: Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly over the past week and remain above long-term background levels. Observations: During the past week, approximately 180 small-magnitude earthquakes (nearly all smaller than M2.0) were detected beneath the upper elevations of Mauna Loa. Most of the earthquakes occurred at shallow depths of less than 5 km (~3 miles) below sea level. Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) measurements show continued summit ...