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which monitors worldwide volcanic activity.

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Recent Volcano Observatory Activity Reports

Recent Updates from the U.S. Geological Survey Volcano Hazards Program

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HVO Kilauea ORANGE/WATCH - West vent continues to erupt in Halemaʻumaʻu lava lake. Elevated SO2 emission rates.
Jan 27, 2021 19:02 - Activity Summary: Kīlauea Volcano is erupting. Lava activity is confined to Halemaʻumaʻu with lava erupting from a vent on the northwest side of the crater. As of January 26 the lava lake was about 208 m (682 ft) deep and only the western half is active. SO2 emission rates remain elevated. Summit Observations: The most recent sulfur dioxide emission rate measurements from January 23, are about 2,200 t/d--lower than the emission rates from the pre-2018 lava lake (3,000--6,500 t/d). The summit tiltmeters are on an inflationary trend. Seismicity remains elevated ...

CALVO GREEN/NORMAL - CA volcanoes at normal background levels of seismicity and deformation during past week.
Jan 26, 2021 16:23 - Monitored CALIFORNIA VOLCANOES Current Volcano Alert Level: all NORMAL Current Aviation Color Code: all GREEN Activity Update: All volcanoes monitored by CalVO using telemetered, real-time sensor networks exhibit normal levels of background seismicity and deformation. Volcanoes monitored include Mount Shasta, Medicine Lake Volcano, Clear Lake Volcanic Field, Lassen Volcanic Center, Long Valley Volcanic Region, Coso Volcanic Field, Ubehebe Craters, and Salton Buttes. Observations for January 18, 2021 (0000h PST) through January 24, 2021 (2359h PST): Clear Lake ...

CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.
Jan 22, 2021 19:37 - 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: Over the past week earthquakes were located at Mount Rainier, Mount Hood, and Newberry volcanoes, consistent with background levels. At Mount Hood, a swarm of over 100 individual earthquakes occurred on January 17 in an area south of ...

HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Seismicity above background, summit inflation continues.
Jan 21, 2021 19:31 - 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, HVO seismometers recorded 56 small-magnitude earthquakes on the volcano's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 kilometers (~5 miles) below ground level. The largest recorded earthquake was a M2.9, just east of the summit caldera, on January 18, at 22:26 p.m. HST. Global ...

AVO Shishaldin UNASSIGNED/UNASSIGNED - Aviation Color Code and Volcano Alert Level changed to UNASSIGNED/UNASSIGNED
Jan 15, 2021 22:16 - The Shishaldin network has suffered several outages affecting GPS, seismic, and infrasound stations. Due to the impaired local monitoring stations, the Alaska Volcano Observatory changed the Aviation Color Code and the Volcano Alert Level UNASSIGNED/UNASSIGNED earlier today. The Alaska Volcano Observatory continues to monitor Shishaldin with satellite data, remote infrasound, and lightning networks.

AVO Veniaminof UNASSIGNED/UNASSIGNED - Aviation Color Code and Volcano Alert Level changed to UNASSIGNED/UNASSIGNED
Jan 15, 2021 22:16 - Data from the Veniaminof seismic network have not been received since December 8, 2020 due in part to an outage of a satellite link to Port Heiden. Repair efforts are planned, however, due to the absence of local seismic monitoring, the Alaska Volcano Observatory changed the Aviation Color Code and the Volcano Alert Level UNASSIGNED/UNASSIGNED earlier today. The Alaska Volcano Observatory continues to monitor Veniaminof with satellite data, remote infrasound, and lightning networks.

YVO Yellowstone GREEN/NORMAL - YVO Monthly Update: background seismicity and deformation
Jan 1, 2021 16:30 - Recent work and news 2020 is over"finally! During the year, there were 1,718 earthquakes located in the Yellowstone region, which is consistent with typical background levels (on average, 1500-2500 earthquakes are located every year). Steamboat Geyser was active throughout 2020, with 2 water eruptions during the past month, on December 11 and 20. There were 48 total eruptions at Steamboat Geyser in 2020, equaling the record for a calendar year that was set in 2019. The Yellowstone Volcano Observatory would like to wish everyone a Happy New Year. May your 2021 be ...