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Recent Volcano Observatory Activity Reports
- : YVO Yellowstone GREEN/NORMAL - YVO Monthly Update: background seismicity and deformation - Recent Volcano Observatory Activity Reports
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 ...
- : HVO Mauna Kea GREEN/NORMAL - A magnitude-4.4 earthquake was located on the northeast flank of Mauna Kea. - Recent Volcano Observatory Activity Reports
Dec 14, 2020 20:36 - MAUNA KEA INFORMATION STATEMENT ACTIVITY SUMMARY The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.4 earthquake located beneath Mauna Kea's northwest flank on Monday, December 14, at 9:27 a.m., HST. OBSERVATIONS The earthquake was centered about 20 km (12 miles) southeast of Waimea, Hawai‘i at a depth of 25 km (16 miles). A map showing its location is posted on the HVO website at http://volcanoes.usgs.gov/hvo/earthquakes. More details are available at the National Earthquake Information Center website at ...
- : CALVO GREEN/NORMAL - CA volcanoes at normal background levels of seismicity and deformation during past week. - Recent Volcano Observatory Activity Reports
Jan 12, 2021 19:03 - 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 4, 2021 (0000h PST) through January 10, 2021 (2359h PST): Clear Lake ...
- : HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Seismicity above background, summit inflation continues. - Recent Volcano Observatory Activity Reports
Jan 14, 2021 19:28 - 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. The ongoing eruption at Kīlauea Volcano is not affecting Mauna Loa. Observations: During the past week, HVO seismometers recorded approximately 50 small-magnitude (below M2.5) earthquakes beneath Mauna Loa Volcano's summit and upper flanks. The majority of these earthquakes occurred at shallow depths of less than 8 kilometers (~5 miles) below sea level. The largest recorded ...
- : CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels. - Recent Volcano Observatory Activity Reports
Jan 15, 2021 19:38 - 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 near Mount Rainier, consistent with background levels. Field crews worked at Mount St. Helens this week to make streamflow measurements in association with passing storm systems.
- : AVO Veniaminof UNASSIGNED/UNASSIGNED - Aviation Color Code and Volcano Alert Level changed to UNASSIGNED/UNASSIGNED - Recent Volcano Observatory Activity Reports
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.
- : HVO Kilauea ORANGE/WATCH - West vent continues to erupt in Halemaʻumaʻu lava lake. Elevated SO2 emission rates. - Recent Volcano Observatory Activity Reports
Jan 16, 2021 19:00 - Activity Summary: Lava activity is confined to Halemaʻumaʻu with lava erupting from a vent on the northwest side of the crater. This morning, January 16, the lava lake is about 200 m (656 ft) deep and remains stagnant over its eastern half. SO2 emission rates remain elevated. Summit Observations: The most recent sulfur dioxide emission rate measurements from January 14, show an increase to about 4,700 t/d—within the range of emission rates from the pre-2018 lava lake (3,000–6,500 t/d). The summit tiltmeters have recorded variable tilt over the past few days, ...
- : AVO Shishaldin UNASSIGNED/UNASSIGNED - Aviation Color Code and Volcano Alert Level changed to UNASSIGNED/UNASSIGNED - Recent Volcano Observatory Activity Reports
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.
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