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Recent Volcano Observatory Activity Reports
- : AVO Cleveland YELLOW/ADVISORY - Unrest continues; steaming from summit vent - Recent Volcano Observatory Activity Reports
Jan 27, 2020 21:35 - No significant activity was observed in seismic data over the past 24 hours. No activity observed in partly cloudy satellite images. Minor steaming from the summit vent was observed in partly cloudy web camera images. 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 less frequently. Cleveland ...
- : AVO Semisopochnoi YELLOW/ADVISORY - No significant activity observed in satellite data; seismicity low - Recent Volcano Observatory Activity Reports
Jan 27, 2020 21:35 - No significant activity was observed in seismic data over the past 24 hours. No significant activity was observed in cloudy satellite and web camera images. Semisopochnoi is monitored by local seismic sensors, satellite data and distant lightning networks. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.
- : AVO Pavlof YELLOW/ADVISORY - Seismic unrest continues; - Recent Volcano Observatory Activity Reports
Jan 27, 2020 21:35 - No significant activity recorded over the past 24 hours. No activity was observed in partly cloudy satellite and cloudy web camera images. No significant seismic activity occurred over the past 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. Pavlof is monitored by local seismic and infrasound sensors, satellite data, web cameras, and distant ...
- : AVO Shishaldin ORANGE/WATCH - Unrest continues; elevated seismicity; elevated surface temperatures - Recent Volcano Observatory Activity Reports
Jan 27, 2020 21:35 - No significant eruptive activity has occurred over the past 24 hours. Seismicity remains above background. Weakly elevated surface temperatures were observed in satellite data. No activity was observed in partly clear web camera images. It remains possible for unrest to escalate at any time with little warning, and additional lava flows, lahars, and ash-producing eruptive events may occur. Shishaldin is monitored by local seismic and infrasound sensors, satellite data, web cameras, a telemetered geodetic network, and distant infrasound and lightning networks.
- : CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels. - Recent Volcano Observatory Activity Reports
Jan 24, 2020 18:54 - 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: Wind noise from storms was apparent on many Cascade seismic stations during the past several days, but earthquake activity has been at background levels. Field crews visited Mount Hood this past week to maintain monitoring equipment.
- : HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Seismicity above background, summit inflation continues. - Recent Volcano Observatory Activity Reports
Jan 23, 2020 17:22 - 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 99 small magnitude earthquakes beneath the upper elevations of the volcano; the strongest was a magnitude-3.1 earthquake on January 21. Most earthquakes occurred at shallow depths of less than 5 km (~3 miles) beneath the volcano's surface. Global Positioning System (GPS) measurements show continued slow summit ...
- : AVO Takawangha GREEN/NORMAL - M6.2 earthquake near Takawangha & Tanaga volcanoes - Recent Volcano Observatory Activity Reports
Jan 23, 2020 07:55 - The USGS National Earthquake Information Center (NEIC) detected a large magnitude 6.2 earthquake 14 km east of Takawangha volcano and 22 km east of Tanaga volcano, north of Tanaga Island. The shallow (10 km depth) earthquake occurred at 05:53 UTC January 23 and followed a series of smaller magnitude 2-3 earthquakes in the same region earlier in the day. There is no clear evidence at this time that the M6.2 earthquake or earlier earthquakes are volcanic in nature, nor is there any indication that this seismic activity has any direct implications for future eruptive ...
- : HVO Kilauea GREEN/NORMAL - Low activity: no lava; slow inflation of summit + middle ERZ; water pond in summit crater - Recent Volcano Observatory Activity Reports
Jan 9, 2020 21:09 - Activity Summary: Kīlauea Volcano is not erupting. Monitoring data for December show variable rates of seismicity and ground deformation, low rates of sulfur dioxide emissions, and only minor geologic changes since the end of eruptive activity in September 2018. Observations: Monitoring data have shown no significant changes in volcanic activity during December. Rates of seismicity over the month were variable but within long term vales. Sulfur dioxide emission rates are low at the summit and are below detection limits at Puʻu ʻŌʻō and the lower East Rift ...
- : HVO Loihi Seamount UNASSIGNED/UNASSIGNED - No activity of concern for Lō‘ihi. - Recent Volcano Observatory Activity Reports
Jan 9, 2020 21:09 - Lō‘ihi's seismic activity remained very low over the past month with six earthquakes in the vicinity of the volcano's summit.
- : HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai. - Recent Volcano Observatory Activity Reports
Jan 9, 2020 21:09 - No significant activity was recorded at Hualālai Volcano over the past month. Five small earthquakes were recorded in the vicinity of the volcano. HVO's continuously recording Global Positioning System (GPS) receiver atop Hualālai recorded no significant deformation over the past month.
- : HVO Haleakala GREEN/NORMAL - No activity of concern for Haleakalā. - Recent Volcano Observatory Activity Reports
Jan 9, 2020 21:09 - No significant activity was recorded at Haleakalā Volcano over the past month. No earthquakes were recorded in the immediate vicinity of the volcano. The continuously recording Global Positioning System (GPS) instrument atop Haleakalā (MAUI) recorded no significant deformation during this time.
- : HVO Mauna Kea GREEN/NORMAL - No activity of concern for Mauna Kea. - Recent Volcano Observatory Activity Reports
Jan 9, 2020 21:09 - No significant activity was detected at Mauna Kea Volcano over the past month. Earthquake counts decreased compared to last month as aftershocks from the November 11. 2019 M4.9 event on Mauna Kea's east flank diminished in number. A single, continuously recording Global Positioning System (GPS) receiver atop Mauna Kea (operated by NASA’s Jet Propulsion Laboratory) recorded no significant changes in deformation during the first half of December. No data have been received since December 16.
- : CALVO GREEN/NORMAL - Activity Update: Volcanoes monitored by CalVO show normal levels of background seismicity and ... - Recent Volcano Observatory Activity Reports
Jan 2, 2020 18:10 - 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 December 1, 2019 (0000h PST) through December 31, 2019 (2359h PST): Mount ...
- : YVO Yellowstone GREEN/NORMAL - YVO Monthly Update: background seismicity and deformation - Recent Volcano Observatory Activity Reports
Jan 1, 2020 17:42 - Recent work and news Happy New Year, from the member agencies of the Yellowstone Volcano Observatory: U.S. Geological Survey, National Park Service, University of Utah, University of Wyoming, UNAVCO, Wyoming State Geological Survey, Idaho Geological Survey, and Montana Bureau of Mines and Geology. We hope that 2020 has started off well for everyone! Steamboat kept up its activity in December, with water eruptions on December 8, 18, and 26. This brings the total number of eruptions for 2019 to 48 and smashes the previous record of eruptions for a calendar year, ...
- : AVO Katmai GREEN/NORMAL - Resuspended ash due to high winds - Recent Volcano Observatory Activity Reports
Dec 26, 2019 19:23 - Strong northwest winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes have picked up loose volcanic ash erupted during the 1912 Novarupta-Katmai eruption and carried it to the southeast today. The resuspended ash cloud was first observed in satellite imagery around 2:00 a.m AKST (11:00 UTC) and is ongoing. The resulting resuspended ash cloud currently extends over Shelikof Strait and Kodiak Island and heights up to an altitude of 6000 feet. This phenomenon is not the result of recent volcanic activity and occurs during times of high winds and dry ...
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