Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - No explosive activity observed. Nothing observed in seismic or satellite data.

USGS Volcano Current Alerts - Sun, 01/20/2019 - 14:32
Jan 20, 2019 20:16 - Unrest continues at Great Sitkin volcano. No unusual activity was observed in seismic data or mostly cloudy satellite views over the past 24 hours. No explosive activity was detected on a regional infrasound array 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 - Unrest continues. Strongly elevated surface temperatures observed at summit.

USGS Volcano Current Alerts - Sun, 01/20/2019 - 14:32
Jan 20, 2019 20:16 - Unrest continues at Cleveland. Strongly elevated surface temperatures were observed in several satellite images over the past 24 hours. This is consistent with the presence of a growing lava dome first observed in the summit crater on January 12. No explosions have been detected since January 9, although the presence of the new lava dome may increase the likelihood of explosive activity at the volcano. Most explosions have a short duration and only present a hazard to aviation in the immediate vicinity of the volcano. Larger explosions that present a more ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Unrest continues. Elevated surface temperatures observed in satellite data.

USGS Volcano Current Alerts - Sun, 01/20/2019 - 14:32
Jan 20, 2019 20:16 - Unrest at Veniaminof continues. Seismic tremor remains at low levels. Moderately elevated surface temperatures were observed in several clear satellite images over the past 24 hours, mostly likely associated with the presence of a cooling lava flow. A weak steam plume was observed in web camera views today. Eruptive activity consisting of lava effusion and/or ash emissions could resume at any time without significant seismic precursors. Veniaminof volcano is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - No explosive activity observed. Steam plume observed in or satellite data today.

USGS Volcano Current Alerts - Sat, 01/19/2019 - 13:32
Jan 19, 2019 19:02 - Unrest continues at Great Sitkin volcano. No unusual activity was observed in seismic data today. A steam plume was observed in satellite data over the past 24 hours. No explosive activity was detected on a regional infrasound array 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 - Unrest continues. Strongly elevated surface temperatures observed at summit.

USGS Volcano Current Alerts - Sat, 01/19/2019 - 13:32
Jan 19, 2019 19:02 - Unrest continues at Cleveland. Strongly elevated surface temperatures were observed in several satellite views over the past 24 hours. This is consistent with the presence of a growing lava dome first observed in the summit crater on January 12. No explosions have been detected since January 9, although the presence of the new lava dome may increase the likelihood of explosive activity at the volcano. Most explosions have a short duration and only present a hazard to aviation in the immediate vicinity of the volcano. Larger explosions that present a more widespread ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Unrest continues. Elevated surface temperatures observed in satellite data.

USGS Volcano Current Alerts - Sat, 01/19/2019 - 13:32
Jan 19, 2019 19:02 - Unrest at Veniaminof continues. Seismic tremor remains at low levels. Moderately elevated surface temperatures were observed in several clear satellite images over the past 24 hours. A possible weak steam plume was observed in web camera views today. Eruptive activity consisting of lava effusion and/or ash emissions could resume at any time without significant seismic precursors. 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. ...
Categories: Volcano Reports

AVO Semisopochnoi UNASSIGNED/UNASSIGNED - No eruptive activity observed; seismic network offline

USGS Volcano Current Alerts - Fri, 01/18/2019 - 19:32
Dec 21, 2018 23:30 - No eruptive activity has been detected at Semisopochnoi since November 1 when a satellite link for transmitting seismic data failed. Since that time, no changes have been observed in satellite data, and no explosions have been detected from the Adak Island infrasound array; the last explosion detected by infrasound was October 31. On Wednesday, December 19, AVO lowered the Aviation Color Code to UNASSIGNED and Alert Level to UNASSIGNED for Semisopochnoi due to the lack of evidence for ongoing eruptive activity. Seismic unrest may be continuing undetected. Pauses in ...
Categories: Volcano Reports

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

USGS Volcano Current Alerts - Fri, 01/18/2019 - 15:32
Jan 18, 2019 21:02 - 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: Cascade Range volcanoes remained at background activity levels throughout the week. During the lapse in appropriations, CVO continues to maintain networks and issue updates and notifications of volcanic activity. Volcano monitoring ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Unrest continues. Seismicity has declined over the week.

USGS Volcano Current Alerts - Fri, 01/18/2019 - 14:32
Jan 18, 2019 20:04 - Low-level unrest continues at Great Sitkin Volcano. Throughout the week, small earthquakes were detected although none have been observed in the the past 3 days. Nothing unusual was observed in most cloudy satellite observations this week. 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 - Unrest continues. Lava dome observed in summit crater as of January 12.

USGS Volcano Current Alerts - Fri, 01/18/2019 - 14:32
Jan 18, 2019 20:04 - Unrest continues at Cleveland. Satellite data showed that a new lava dome was present in the summit crater on January 12, and continued to grow slowly through January 16. This prompted AVO to increase the Color Code to ORANGE and the Alert Level to WATCH on January 17. No explosions have been detected since January 9, although the presence of the new lava dome may increase the likelihood of explosive activity at the volcano. Periodic explosions are common at Cleveland and will likely occur without warning. Most explosions have a short duration and only present a ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Eruption has paused or stopped. Seismic events indicative of unrest continue.

USGS Volcano Current Alerts - Fri, 01/18/2019 - 14:32
Jan 18, 2019 20:04 - Low level unrest at Veniaminof volcano continues. Weakly elevated surface temperatures were observed in satellite data on January 16 and 17 of this week, which is consistent with the cooling of lava emplaced in December. Weak steam emissions could be seen in occasionally clear web camera views. Seismicity in the form of low-amplitude tremor and discrete events indicatives continuing unrest. Pauses in eruptive activity are common at Veniaminof and lava effusion and/or ash emissions could resume at any time without significant seismic precursors.
Categories: Volcano Reports

CALVO GREEN/NORMAL - Activity Update: Volcanoes monitored by CalVO show normal levels of background seismicity and ...

USGS Volcano Current Alerts - Thu, 01/17/2019 - 16:32
Jan 17, 2019 22:03 - 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 21, 2018 (0000h PST) through January 17, 2018 (1200h PST): Mt ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - No significant activity observed in seismic or satellite data today.

USGS Volcano Current Alerts - Thu, 01/17/2019 - 16:32
Jan 17, 2019 21:10 - Unrest continues at Great Sitkin volcano. No unusual activity was observed in seismic data or partly cloudy satellite views over the past 24 hours. No explosive activity was detected on a regional infrasound array 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 - Unrest continues. New lava dome observed at summit.

USGS Volcano Current Alerts - Thu, 01/17/2019 - 16:32
Jan 17, 2019 21:10 - A new lava dome was observed in the summit crater of Cleveland volcano prompting AVO to upgrade the Color Code/Alert Level to ORANGE/WATCH earlier today. According to satellite data this lava dome was observed as early as January 12 and likely began extruding after the last explosion at the volcano on January 9. No explosive activity has been detected or observed in seismic or infrasound data today. The presence of the lava dome may increase the likelihood of explosive activity at the volcano. Periodic explosions are common at Cleveland and will likely occur without ...
Categories: Volcano Reports

AVO Veniaminof YELLOW/ADVISORY - Unrest continues. Elevated surface temperatures observed in satellite data.

USGS Volcano Current Alerts - Thu, 01/17/2019 - 16:32
Jan 17, 2019 21:10 - Unrest at Veniaminof continues. Seismic tremor remains at low levels. Weak to moderately elevated surface temperatures were observed in satellite views and a steam plume was observed in web camera views over the past 24 hours. Eruptive activity consisting of lava effusion and/or ash emissions could resume at any time without significant seismic precursors. 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, ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - No significant activity observed in seismic or satellite data today.

USGS Volcano Current Alerts - Wed, 01/16/2019 - 15:32
Jan 16, 2019 20:31 - Unrest continues at Great Sitkin volcano. No unusual activity was observed in seismic data or mostly cloudy satellite views over the past 24 hours. No explosive activity was detected on a regional infrasound array 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 YELLOW/ADVISORY - Unrest continues. Elevated surface temperatures observed in satellite data.

USGS Volcano Current Alerts - Wed, 01/16/2019 - 15:32
Jan 16, 2019 20:31 - No eruptive activity detected or observed in seismic or infrasound data today. Moderately elevated surface temperatures were observed in several satellite views over the past 24 hours. Periodic explosions are common at Cleveland and will likely occur without warning. Most explosions have a 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. Cleveland volcano is monitored by only one seismic station, which ...
Categories: Volcano Reports

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

USGS Volcano Current Alerts - Wed, 01/16/2019 - 15:32
Jan 16, 2019 20:31 - Unrest at Veniaminof continues. Seismic tremor remains at low levels. Weakly elevated surface temperatures were observed in satellite views and a weak steam plume was observed in web camera views over the past 24 hours. Eruptive activity consisting of lava effusion and/or ash emissions could resume at any time without significant seismic precursors. 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

HVO Kilauea YELLOW/ADVISORY - Low activity across the volcano. No lava at the surface. Low levels of gas emissions.

USGS Volcano Current Alerts - Tue, 01/15/2019 - 21:33
Jan 16, 2019 01:12 - Activity Summary: Kīlauea Volcano is not erupting. Rates of seismicity, deformation, and gas release have not changed significantly over the past week. Deformation signals are consistent with slow magmatic recharge within the middle East Rift Zone (ERZ). Observations: Low rates of seismicity continue across the volcano, with events occurring primarily in the summit and south flank regions. Slow inflationary tilt continues in the middle ERZ. Sulfur dioxide emission rates have been below detection limits in the LERZ since early September, though minor amounts of ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Seismicity remains elevated.No significant activity observed in satellite data.

USGS Volcano Current Alerts - Tue, 01/15/2019 - 14:35
Jan 15, 2019 19:58 - Unrest continues at Great Sitkin volcano. Small earthquakes are occurring. No unusual activity was observed in cloudy satellite views over the past 24 hours. No explosive activity was detected on a regional infrasound array 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

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