USGS Volcano Current Alerts

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Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program
Updated: 14 min 48 sec ago

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

Mon, 02/18/2019 - 15:32
Feb 18, 2019 20:02 - Nothing significant was observed in mostly cloudy satellite views of the volcano 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 ...
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - No activity observed in satellite data.

Mon, 02/18/2019 - 15:32
Feb 18, 2019 20:02 - No activity observed in mostly 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, 2019. ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Seismicity remains low. No activity observed in satellite data.

Mon, 02/18/2019 - 15:32
Feb 18, 2019 20:02 - No activity observed in partially cloudy satellite and web camera images. 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 significant explosive eruption. AVO combines seismic, infrasound, lightning, and satellite data for rapid detection of such events.
Categories: Volcano Reports

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

Sun, 02/17/2019 - 17:33
Feb 17, 2019 21:04 - Nothing significant was observed in mostly cloudy satellite views of the volcano 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 ...
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Elevated surface temperatures observed in satellite data.

Sun, 02/17/2019 - 17:33
Feb 17, 2019 21:04 - Elevated surface temperatures observed in one satellite image of Cleveland Volcano over the past day, but observations were limited by cloud cover. 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 ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Seismicity remains low. No activity observed in satellite data.

Sun, 02/17/2019 - 17:33
Feb 17, 2019 21:04 - No activity observed in cloudy satellite and web camera images. 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 significant explosive eruption. AVO combines seismic, infrasound, lightning, and satellite data for rapid detection of such events.
Categories: Volcano Reports

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

Sat, 02/16/2019 - 17:32
Feb 16, 2019 21:52 - Nothing significant was observed in mostly cloudy satellite views of the volcano 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 ...
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Elevated surface temperatures observed in satellite data.

Sat, 02/16/2019 - 17:32
Feb 16, 2019 21:52 - Elevated surface temperatures observed in partially 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 ...
Categories: Volcano Reports

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

Sat, 02/16/2019 - 17:32
Feb 16, 2019 21:52 - Weakly elevated surface temperatures seen in satellite images overnight consistent with cooling lava. No activity observed in web camera images. 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 significant explosive eruption. AVO combines seismic, infrasound, ...
Categories: Volcano Reports

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

Fri, 02/15/2019 - 18:33
Feb 15, 2019 23:38 - 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 ...
Categories: Volcano Reports

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

Fri, 02/15/2019 - 18:33
Feb 15, 2019 23:38 - Elevated surface temperatures at the summit of the volcano 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 ...
Categories: Volcano Reports

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

Fri, 02/15/2019 - 18:33
Feb 15, 2019 23:38 - Slightly elevated surface temperatures consistent with cooling lava flows were observed several times this week during periods of clear weather. Intermittent low-level seismicity characterized by occasional low frequency earthquakes was detected during 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 without significant associated seismicity. Veniaminof volcano is monitored with a ...
Categories: Volcano Reports

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

Fri, 02/15/2019 - 16:32
Feb 15, 2019 20:43 - 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: Seismicity and other monitoring results were at background levels at Cascade Range volcanoes during the past week.
Categories: Volcano Reports

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

Thu, 02/14/2019 - 17:32
Feb 14, 2019 20:50 - Nothing significant was observed in mostly cloudy satellite views of the volcano 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 ...
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Elevated surface temperatures observed in satellite data

Thu, 02/14/2019 - 17:32
Feb 14, 2019 20:50 - Weakly elevated surface temperatures observed in mostly 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 ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Seismicity remains low. Weakly elevated surface temperatures in satellite data.

Thu, 02/14/2019 - 17:32
Feb 14, 2019 20:50 - Weakly elevated surface temperatures seen in satellite images overnight consistent with cooling lava. No activity observed in web camera images. 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 significant explosive eruption. AVO combines seismic, infrasound, ...
Categories: Volcano Reports

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

Wed, 02/13/2019 - 15:32
Feb 13, 2019 20:15 - Nothing significant was observed in mostly cloudy satellite views of the volcano 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 ...
Categories: Volcano Reports

AVO Cleveland ORANGE/WATCH - Elevated surface temperatures observed in satellite data

Wed, 02/13/2019 - 15:32
Feb 13, 2019 20:15 - Moderately elevated surface temperatures observed in clear 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 ...
Categories: Volcano Reports

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

Wed, 02/13/2019 - 15:32
Feb 13, 2019 20:15 - No activity observed in mostly cloudy satellite images or web camera images. 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 significant explosive eruption. AVO combines seismic, infrasound, lightning, and satellite data for rapid detection of such events.
Categories: Volcano Reports

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

Tue, 02/12/2019 - 17:32
Feb 12, 2019 20:40 - Nothing significant was observed in mostly cloudy satellite views of the volcano 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 ...
Categories: Volcano Reports

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