Live Panorama of Kīlauea Caldera from HVO Observation Tower

  • AVO Pavlof YELLOW/ADVISORY - Low-level seismic tremor; cloudy conditions in webcam and satellite images
    on January 1, 1970 at 12:00 am

    May 22, 2019 19:14 - Low-level seismic tremor continues at Pavlof but has declined since last week. Webcam and satellite images were consistently cloudy in the last day. The level of unrest at Pavlof can change quickly and the progression to eruptive activity can occur with little or no warning. We continue to monitor Pavlof closely and will provide any new information about the status of the volcano when or if it becomes available. […]

  • AVO Cleveland YELLOW/ADVISORY - Cleveland remains restless; elevated surface temperatures in satellite data
    on January 1, 1970 at 12:00 am

    May 22, 2019 19:14 - No seismic or infrasound activity was detected in regional geophysical data. Elevated surface temperatures were detected in an overnight satellite image. Additional episodes of lava effusion and explosions are likely and will 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. Local seismic and infrasound data at Cleveland have ... […]

  • HVO Kilauea GREEN/NORMAL - Low activity levels; no lava at the surface, modest inflation of summit magma reservoir.
    on January 1, 1970 at 12:00 am

    May 21, 2019 19:22 - Activity Summary: Kīlauea Volcano is not erupting. Monitoring data over the past nine months have shown relatively low rates of seismicity, deformation, and sulfur dioxide emissions at the summit and East Rift Zone, including the area of the 2018 eruption. As of March 26, Kīlauea Volcano is at NORMAL/GREEN. For definitions of USGS Volcano Alert Levels and Aviation Color Codes, see: https://volcanoes.usgs.gov/vhp/about_alerts.html Despite this classification, Kīlauea remains an active volcano, and it will erupt again. Although we expect clear signs prior to a ... […]

  • CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.
    on January 1, 1970 at 12:00 am

    May 17, 2019 15:37 - 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: Monitoring systems show that activity at Washington and Oregon Cascade Range volcanoes remained at background levels throughout the week. […]

  • HVO Mauna Loa GREEN/NORMAL - No significant changes for Mauna Loa; slow inflation of the summit continues.
    on January 1, 1970 at 12:00 am

    May 3, 2019 20:54 - A slight increase in the number of detected earthquakes at Mauna Loa was noted over the past month. Small earthquakes, mostly less than M2.0, continued in long-active areas including beneath the northwest flank, summit region, and east flank. The largest earthquake for Mauna Loa over the past month was a M3.4 event on May 1st, which occurred north of the summit at a depth of approximately 10.4 km (6.5 mi) below ground level. USGS received three felt-reports following this event. Data from Global Positioning System (GPS) instruments on Mauna Loa indicate slow inflation ... […]