Live Panorama of Kīlauea Caldera from HVO Observation Tower

  • AVO Cleveland YELLOW/ADVISORY - Unrest continues. No eruptive activity detected over the past week.
    on January 1, 1970 at 12:00 am

    Mar 22, 2019 21:26 - No eruptive activity was detected in regional seismic or infrasound data over the past week. Cloudy conditions obscured the volcano for most of the week, but a clear satellite view on March 17 showed slightly elevated temperatures and a steam plume at the summit. These observations are consistent with background degassing at the vent, and there is no evidence for renewed lava dome growth. Additional episodes of lava effusion and explosions are likely and will occur without advance warning. The most recent explosion of Cleveland occurred on January 9, 2019. These ... […]

  • AVO Veniaminof YELLOW/ADVISORY - No evidence of eruptive activity; very low-level seismic unrest continues.
    on January 1, 1970 at 12:00 am

    Mar 22, 2019 21:26 - Slightly elevated surface temperatures consistent with cooling lava flows were observed several times during periods of clear weather earlier this week. Steam was also observed at the front of the recent lava flow on March 17, likely due to interaction between the cooling lava and snow/ice. Low-level seismicity characterized by weak seismic tremor occurred throughout the past week. The level of unrest observed over the past two months indicates that eruptive activity has paused or stopped. Pauses in eruptive activity are common at Veniaminof. Lava effusion, ash emissions, ... […]

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

    Mar 22, 2019 17:15 - 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 Cascade Range volcanoes remained at background levels throughout the week. […]

  • HVO Kilauea YELLOW/ADVISORY - Low activity levels; no lava at the surface, low gas emission rates.
    on January 1, 1970 at 12:00 am

    Mar 19, 2019 22:56 - Activity Summary: Kīlauea Volcano is not erupting. Rates of seismicity, deformation, and gas emissions have not changed significantly over the past week. Observations: This past week saw no significant change in volcanic activity. Low rates of seismicity continue across the volcano, with earthquakes occurring primarily in the summit and south flank regions. GPS stations and tiltmeters continue to show motions consistent with refilling of the deep East Rift Zone magma reservoir. Sulfur dioxide emission rates from the summit and from Puʻu ʻŌʻō remain low. These ... […]

  • 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

    Mar 7, 2019 03:14 - No significant changes in Mauna Loa's seismic activity were detected in February. Small earthquakes, mostly less than M2.0, continued in long-active areas including beneath the northwest flank, summit region, and east flank. Data from Global Positioning System (GPS) instruments on Mauna Loa indicate slow inflation of the summit magma reservoir system. The rates of deformation are lower than during the period of more intense unrest from 2014-2017. Gas and temperature data from a station on the Southwest Rift Zone and within the summit caldera showed no significant ... […]