Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Nothing observed in satellite data. A few small earthquakes over past day.

USGS Volcano Current Alerts - Sat, 02/09/2019 - 15:32
Feb 9, 2019 21:29 - Nothing significant was observed in mostly cloudy satellite images over the past day. A few small earthquakes have been 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.
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Nothing observed over past day at the summit.

USGS Volcano Current Alerts - Sat, 02/09/2019 - 15:32
Feb 9, 2019 21:29 - Nothing was observed in mostly cloudy satellite views of Cleveland Volcano over the past day. 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 ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Nothing observed in satellite data. Seismicity remains low.

USGS Volcano Current Alerts - Sat, 02/09/2019 - 15:32
Feb 9, 2019 21:29 - Satellite and webcam views of the volcano were obscured by clouds over the past day. The level of seismicity remains low, but above background. 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 significant explosive eruption. AVO combines seismic, infrasound, lightning, and satellite data for rapid ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Nothing observed in satellite data; a few earthquakes this week.

USGS Volcano Current Alerts - Fri, 02/08/2019 - 16:32
Feb 8, 2019 22:27 - Low level unrest is continuing at Great Sitkin Volcano. Nothing significant was observed in satellite data this week, but several small earthquakes have been detected on local seismic stations throughout the week, normally a few each day. A regional infrasound array on Adak Island did not pick up any indications of explosive activity. 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 ...
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Slightly elevated surface temperatures observed this week; no explosions detected.

USGS Volcano Current Alerts - Fri, 02/08/2019 - 16:32
Feb 8, 2019 22:27 - Slightly elevated surface temperatures were observed occasionally in satellite images throughout the week. No explosive activity was detected in regional seismic or infrasound data during the week. The most recent explosion of Cleveland occurred on January 9, 2018. 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 less likely and/or frequent. Local seismic and infrasound data at Cleveland have been ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - No evidence of eruptive activty; very low-level seismic unrest continues.

USGS Volcano Current Alerts - Fri, 02/08/2019 - 16:32
Feb 8, 2019 22:27 - Slightly elevated surface temperatures consistent with cooling lava flows were observed a few times this week during periods of clear weather. However, for most of the week the volcano has been obscured by clouds. Intermittent low-level seismicity characterized by occasional low frequency earthquakes and minor tremor was detected during the week. The level of unrest observed over the past several weeks indicates that eruptive activity has paused or stopped. Pauses in eruptive activity are common at Veniaminof. Lava effusion, ash emissions, or both could resume at any time ...
Categories: Volcano Reports

CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.

USGS Volcano Current Alerts - Fri, 02/08/2019 - 14:32
Feb 8, 2019 18:24 - 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: All geophysical, hydrologic, and geochemical monitoring systems show that activity at Cascade Range volcanoes remained at background levels throughout the week.
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Nothing observed in satellite data. A few small earthquakes over past day.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
Feb 7, 2019 21:20 - Nothing significant was observed in mostly cloudy satellite images over the past day. A few small earthquakes have been 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.
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Nothing observed over past day at the summit.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
Feb 7, 2019 21:20 - Nothing was observed in mostly cloudy satellite views of Cleveland Volcano over the past day. 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 ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Nothing observed in satellite data. Seismicity remains low.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
Feb 7, 2019 21:20 - Satellite and webcam views of the volcano were obscured by clouds over the past day. The level of seismicity remains low, but above background. 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 significant explosive eruption. AVO combines seismic, infrasound, lightning, and satellite data for rapid ...
Categories: Volcano Reports

HVO Mauna Loa GREEN/NORMAL - No significant changes for Mauna Loa; possible slow inflation continues.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
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 ...
Categories: Volcano Reports

HVO Lo`ihi UNASSIGNED/UNASSIGNED - No activity of concern for Lō‘ihi.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
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.
Categories: Volcano Reports

HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
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.
Categories: Volcano Reports

HVO Haleakala GREEN/NORMAL - No activity of concern for Haleakalā.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
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.
Categories: Volcano Reports

HVO Mauna Kea GREEN/NORMAL - No activity of concern for Mauna Kea.

USGS Volcano Current Alerts - Thu, 02/07/2019 - 15:32
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.
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Nothing observed in satellite data. A few small earthquakes over past day.

USGS Volcano Current Alerts - Wed, 02/06/2019 - 17:32
Feb 6, 2019 21:54 - Nothing significant was observed in mostly cloudy satellite images over the past day. A few small earthquakes have been 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.
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Nothing observed over past day at the summit.

USGS Volcano Current Alerts - Wed, 02/06/2019 - 17:32
Feb 6, 2019 21:54 - Nothing was observed in mostly cloudy satellite views of Cleveland Volcano over the past day. 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 ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Slightly elevated surface temperatures observed in satellite data.

USGS Volcano Current Alerts - Wed, 02/06/2019 - 17:32
Feb 6, 2019 21:54 - Clear satellite views of the volcano over the past day showed slightly elevated surface temperatures in the vicinity of the intracaldera cone. The above background temperatures are a result of the still hot lava flows on the flanks of the intracaldera cone. Webcam views of the volcano were obscured by clouds over the past day. The level of seismicity remains low, but above background. 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 ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Nothing observed in satellite data. A few small earthquakes over past day.

USGS Volcano Current Alerts - Tue, 02/05/2019 - 16:32
Feb 5, 2019 20:53 - Nothing significant was observed in mostly cloudy satellite images over the past day. A few small earthquakes have been 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.
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Nothing observed over past day at the summit.

USGS Volcano Current Alerts - Tue, 02/05/2019 - 16:32
Feb 5, 2019 20:53 - Nothing was observed in mostly cloudy satellite views of Cleveland Volcano over the past day. 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 ...
Categories: Volcano Reports

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