USGS Volcano Alerts

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Recent Volcano Observatory Activity Reports

  • : AVO Great Sitkin YELLOW/ADVISORY - Seismicity slightly elevated; weakly elevated surface temps in satellite data - Recent Volcano Observatory Activity Reports
    Jun 18, 2019 20:15 - Weakly elevated surface temperatures were observed at Great Sitkin in clear satellite views of the volcano over the past day. The level of seismic activity remains slightly above background. Nothing noteworthy was detected in seismic and regional infrasound data during the last 24 hours. Great Sitkin volcano is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, ...
  • : AVO Cleveland YELLOW/ADVISORY - Unrest continues; nothing noteworthy seen in mostly cloudy satellite data - Recent Volcano Observatory Activity Reports
    Jun 18, 2019 20:15 - No activity was observed in mostly cloudy satellite images over the past day. Nothing significant detected in regional seismic or infrasound data. 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 been ...
  • : HVO Kilauea GREEN/NORMAL - Low activity levels; no lava at the surface, modest inflation of summit magma reservoir. - Recent Volcano Observatory Activity Reports
    Jun 18, 2019 18:56 - Activity Summary: Kīlauea Volcano is not erupting. Monitoring data from the past nine months have shown steady rates of seismicity, deformation, and low rates of sulfur dioxide emissions at the summit and East Rift Zone, including the area of the 2018 eruption. As of June 18, 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 ...
  • : AVO Pavlof GREEN/NORMAL - Unrest has dropped to background levels; volcano moved to GREEN/NORMAL this week - Recent Volcano Observatory Activity Reports
    Jun 14, 2019 19:00 - Seismic activity has declined to background levels and the Aviation Color Code and Alert Level was lowered to GREEN/NORMAL on June 12, 2019. Vapor emissions from the summit vent may be observed occasionally and elevated surface temperatures may be detected in high-resolution satellite data. These outward signs of unrest are common and are considered normal background behavior for Pavlof Volcano. Rapid escalation of unrest can occur with only subtle changes in the level of seismic activity and it remains possible for the volcano to become active at any time. Pavlof is ...
  • : CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels. - Recent Volcano Observatory Activity Reports
    Jun 14, 2019 16:24 - 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. Earthquakes were recorded at Mount St. Helens, Mount Rainier, and Crater Lake. Crater Lake has been seismically quiet ...
  • : HVO Lo`ihi UNASSIGNED/UNASSIGNED - No activity of concern for Lō‘ihi. - Recent Volcano Observatory Activity Reports
    Jun 7, 2019 23:12 - Lō‘ihi's seismic activity remained very low over the past month. Four earthquakes were detected in the vicinity of the volcano.
  • : HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai. - Recent Volcano Observatory Activity Reports
    Jun 7, 2019 23:12 - No significant activity was recorded at Hualālai Volcano over the past month. Four earthquakes were recorded in the vicinity of the volcano. Seismic activity is back to background level following the April 13th M5.3 earthquake. 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
    Jun 7, 2019 23:12 - No significant activity was recorded at Haleakalā Volcano over the past month. No earthquakes were recorded in the vicinity of the volcano. The continuously recording Global Positioning System (GPS) instrument atop Haleakalā recorded no significant deformation during this time.
  • : HVO Mauna Kea GREEN/NORMAL - No activity of concern for Mauna Kea. - Recent Volcano Observatory Activity Reports
    Jun 7, 2019 23:12 - No significant activity was detected at Mauna Kea Volcano over the past month. A dozen earthquakes were detected in the vicinity of the volcano. 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 this time. HVO's GPS station MKPM (Mauna Kea Permanent) is back online.
  • : HVO Mauna Loa GREEN/NORMAL - No significant changes for Mauna Loa; slow inflation of the summit continues. - Recent Volcano Observatory Activity Reports
    Jun 6, 2019 20:42 - 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 under the summit caldera at depths around 1-4 km (0.6-2.5 mi) below ground level. Seismicity was low in other areas of the volcano. The largest earthquake for Mauna Loa over the past month was a M2.8 event on May 15, which occurred under the summit caldera at a depth of approximately 3.5 km (2.2 mi) below ground level. Data from Global Positioning System (GPS) instruments on Mauna Loa indicate slow inflation of the ...
  • : CALVO GREEN/NORMAL - Activity Update: Volcanoes monitored by CalVO show normal levels of background seismicity and ... - Recent Volcano Observatory Activity Reports
    Jun 6, 2019 16:33 - 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 May 1, 2019 (0000h PST) through May 31, 2019 (2359h PST): Mt Shasta: Five ...
  • : YVO Yellowstone GREEN/NORMAL - YVO Monthly Update: background seismicity and deformation - Recent Volcano Observatory Activity Reports
    Jun 1, 2019 18:19 - Recent work and news In May 2019, Steamboat geyser returned to its pattern of more frequent activity, with water eruptions occurring almost weekly, on May 3, 8, 13, 20, and 27. Field work by YVO scientists during the month involved the deployment of semipermanent GPS stations to 15 locations around Yellowstone National Park, as well as maintenance of the Norris temperature network—including the datalogger at Steamboat geyser, which had not been operating due to an equipment failure. Seismicity During May 2019, the University of Utah Seismograph Stations, ...

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Updated: March 11, 2011 — 12:28 am

The Author

Rich Fleetwood

Rich is the founder of SurvivalRing, now in it's 20th year, author of multimedia CDs and DVDs, loves the outdoors, his family, his geeky skill-set, and lives in rural Missouri, just a few miles from the Big Muddy. Always ready to help others, he shares what he learns on multiple blogs, social sites, and more. With a background in preparedness and survival skills, training with county, state, and national organizations, and skills in all areas of media and on air experience in live radio and television, Rich is always thinking about the "big picture", when it comes to helping individuals and families prepare for life's little surprises. Since 1997, he has provided guidance, authentic government survival history, and commentary on why we all need to get ready for that fateful day in the future, when we have to get our hands dirty and step in to save the day. He is an award winning videographer (2005 Telly Award), has received state and national scholarly recognition (2006 New Century Scholar and All USA Academic Team), and is a natural with computers, technology, gadgets, small furry mammals, and anything on wheels. Rich likes making friends, solving problems, and creating solutions to everyday issues. He doesn't mind mixing things up, when there is a teaching moment ready to happen. As a constitutional conservative, he's staying quite busy these days. The SurvivalRing Radio Show at www.survivalringradio.com will be coming back SOON!

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