USGS Volcano Alerts

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Recent Volcano Observatory Activity Reports

  • : AVO Great Sitkin YELLOW/ADVISORY - Seismicity remains low. Nothing unusual activity observed in satellite data. - Recent Volcano Observatory Activity Reports
    Feb 23, 2019 20:13 - Nothing significant was observed in mostly cloudy satellite views of the volcano over the past day. Low-level activity detected on local seismic stations. No unrest or unusual activity noted on a nearby regional infrasound array located on Adak Island. 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, lightning, and satellite data.
  • : AVO Cleveland ORANGE/WATCH - Unrest continues. No unusual activity in seismic or satellite data. - Recent Volcano Observatory Activity Reports
    Feb 23, 2019 20:13 - No unusual activity was observed in cloudy satellite data over the past 24 hours. No activity was detected in regional seismic or infrasound data. The most recent explosion of Cleveland Volcano occurred on January 9, 2019. Cleveland explosions 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 unavailable since January 26, ...
  • : AVO Veniaminof YELLOW/ADVISORY - Seismicity remains low. Weakly elevated temperatures observed in satellite data. - Recent Volcano Observatory Activity Reports
    Feb 23, 2019 20:13 - Satellite views over the past data showed weakly elevated surface temperatures consistent with continued cooling of the lava flows. No activity observed in partially cloudy web camera images over the past 24 hours. The level of seismicity remains low. It remains possible for eruptive activity consisting of lava effusion, ash emissions or both to resume at any time without significant precursory seismic events. Veniaminof volcano is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to a more ...
  • : CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels. - Recent Volcano Observatory Activity Reports
    Feb 22, 2019 18:03 - 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. - Recent Volcano Observatory Activity Reports
    Feb 19, 2019 22:20 - Activity Summary: Kīlauea Volcano is not erupting. Rates of seismicity, deformation, and gas emissions have not changed significantly over the past week. Observations: Geophysical and geologic data indicate no significant change with 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. Sulfur dioxide emission rates from the summit and from Puʻu ʻŌʻō remain low. ...
  • : HVO Mauna Loa GREEN/NORMAL - No significant changes for Mauna Loa; possible slow inflation continues. - Recent Volcano Observatory Activity Reports
    Feb 7, 2019 20:10 - No significant changes in Mauna Loa's seismic activity were detected in January. Small earthquakes, mostly less than M2.0, continued in long-active areas including beneath the northwest flank and summit caldera. The largest earthquake for Mauna Loa in the past month was a M3.5 event, at a depth of approximately 3.5 km (2.2 mi) below ground level, near the summit on January 27. USGS received five felt-reports following this event. Data from Global Positioning System (GPS) instruments on Mauna Loa indicate possible slow inflation of the summit magma reservoir system. The ...
  • : HVO Lo`ihi UNASSIGNED/UNASSIGNED - No activity of concern for Lō‘ihi. - Recent Volcano Observatory Activity Reports
    Feb 7, 2019 20:10 - Lō‘ihi's seismic activity remained very low during January. One small earthquake, less than M2.0, was detected in the vicinity of the volcano.
  • : HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai. - Recent Volcano Observatory Activity Reports
    Feb 7, 2019 20:10 - No significant activity occurred at Hualālai Volcano in January. Six small earthquakes, all less than M3.0, were located in the vicinity of the volcano, with most of them occurring at depths greater than 20 km (12 mi) below ground level. 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
    Feb 7, 2019 20:10 - No significant activity was recorded at Haleakalā Volcano in January. One earthquake, a M2.3 event at a depth of 13.5 km (8.5 mi) below the ocean surface, was detected off the southeast flank of the volcano on January 14. The continuously recording Global Positioning System (GPS) instrument atop Haleakalā recorded no significant deformation over the past month.
  • : HVO Mauna Kea GREEN/NORMAL - No activity of concern for Mauna Kea. - Recent Volcano Observatory Activity Reports
    Feb 7, 2019 20:10 - No significant activity was detected at Mauna Kea Volcano in January. The largest earthquake was a M2.2 event, 5 km (3 mi) below ground level, under the north flank of the volcano on January 18. The USGS received no felt-reports following this event. 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 over the past month.
  • : AVO Dutton UNASSIGNED/UNASSIGNED - Dutton moved from GREEN to UNASSIGNED due to lack of functioning seismic network. - Recent Volcano Observatory Activity Reports
    Feb 2, 2019 00:31 - AVO can no longer seismically monitor Mount Dutton volcano due to the lack of a functioning seismic network there. As a result, AVO is unable to (1) assess whether Dutton may be building towards an eruption and (2) quickly confirm or dismiss reports of activity at the volcano. Because Dutton is no longer seismically monitored, it will move from volcano alert level Normal and aviation color code Green to "unassigned." As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, regional infrasound, lightning, and reports from pilots ...
  • : YVO Yellowstone GREEN/NORMAL - YVO Monthly Update: background seismicity and deformation - Recent Volcano Observatory Activity Reports
    Feb 1, 2019 20:36 - Recent work and news Steamboat geyser remains active in 2019, with three eruptions during the month—January 4, 16, and 25, the latter being one of the smallest (based on seismicity at station YNM and water discharge measured at the Tantalus stream gage) since the current sequence of water eruptions begain in March 2018. Yellowstone National Park scientists visited Norris Geyser Basin on January 30 and were able to restart the Norris temperature network (which had been off line since December 20). Stored data were downloaded, and new data are coming in from all ...
  • : CALVO GREEN/NORMAL - Activity Update: Volcanoes monitored by CalVO show normal levels of background seismicity and ... - Recent Volcano Observatory Activity Reports
    Feb 1, 2019 19:17 - 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 17, 2019 (0000h PST) through January 31, 2019 (2359h PST): Mt ...

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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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