Volcano Reports

AVO Cleveland YELLOW/ADVISORY - Unrest continues. No significant activity in seismic data or satellite images.

USGS Volcano Current Alerts - Sat, 09/15/2018 - 16:32
Sep 15, 2018 20:51 - Low-level unrest continues at Cleveland Volcano. No significant activity was observed in cloudy satellite images or detected in seismic or pressure sensor (infrasound) data. Cleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.
Categories: Volcano Reports

AVO Veniaminof ORANGE/WATCH - Eruption of lava flow likely continues. No significant ash emissions.

USGS Volcano Current Alerts - Sat, 09/15/2018 - 16:32
Sep 15, 2018 20:51 - Eruption of a lava flow from Veniaminof volcano's summit cone likely continues, as suggested by continued observations of elevated seismic activity, nighttime incandescence in webcam images, and elevated surface temperatures in thermal satellite data. No significant ash emissions were observed. 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 an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, ...
Categories: Volcano Reports

HVO Kilauea ORANGE/WATCH - Minimal incandescence, fume from Fissure 8; Summit quiet.

USGS Volcano Current Alerts - Sat, 09/15/2018 - 14:32
Sep 15, 2018 18:52 - Kīlauea summit and lower East Rift Zone On Kīlauea Volcano's lower East Rift Zone (LERZ), the collapse pit is the central part of a slowly subsiding lava surface that previously filled the fissure 8 cone. Mininimal incandescence, less than yesterday, is still visible overnight while minor fuming is visible during the day. Seismicity and ground deformation remain low at the summit of Kīlauea. A magnitude-2.9 long-period earthquake, similar to those that accompanied collapses prior to Aug. 4th, occurred yesterday at about 2 pm below the collapse and was felt in ...
Categories: Volcano Reports

HVO Kilauea ORANGE/WATCH - Minor incandescence, fume from Fissure 8; Summit quiet.

USGS Volcano Current Alerts - Fri, 09/14/2018 - 16:31
Sep 14, 2018 20:06 - Kīlauea summit and lower East Rift Zone On Kīlauea Volcano's lower East Rift Zone (LERZ), the collapse pit is the central part of a slowly subsiding lava surface that previously filled the fissure 8 cone. Minor incandescence is still visible overnight while minor fuming is visible during the day. What appeared to be a small slow lava flow yesterday was probably a layer of incandescence that was gradually exposed yesterday morning in the collapse pit. Since the beginning of September, small lava flows have been observed within the fissure 8 cone, however none have ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Low-level unrest continues. Earthquake activity elevated.

USGS Volcano Current Alerts - Fri, 09/14/2018 - 16:31
Sep 14, 2018 19:19 - Low-level unrest continues at Great Sitkin Volcano. Earthquake activity has been elevated over the past week. No significant activity was observed in satellite images, which were mostly obscured by clouds over the past 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 YELLOW/ADVISORY - Unrest continues. Seismicity low. Elevated surface temperatures observed.

USGS Volcano Current Alerts - Fri, 09/14/2018 - 16:31
Sep 14, 2018 19:19 - Weakly to moderately elevated surface temperatures in the summit crater of Cleveland volcano were observed throughout the week in satellite data during periods of clear weather. This is typical of Cleveland volcano and indicates that low-level unrest continues. Satellite observations of the summit area show no significant change to a pancake-like lava flow that was emplaced in late June. No significant activity was detected in seismic and infrasound (pressure) sensor data throughout the week. Future explosive activity is likely and is expected to occur without ...
Categories: Volcano Reports

AVO Veniaminof ORANGE/WATCH - Eruption of lava flow continues from summit cone. No significant ash emissions.

USGS Volcano Current Alerts - Fri, 09/14/2018 - 16:31
Sep 14, 2018 19:19 - Veniaminof continues to erupt, feeding a lava flow that extends about 800 m (0.5 mi) down the south flank of its summit cone. The lava flow is confined to the summit caldera. Images from an FAA Web camera in Perryville recorded incandescence at night throughout the week, when visibility was good, and a gas plume has been visible sporadically, during clear daytime conditions. No significant ash emissions are being produced. Satellite data have shown elevated surface temperatures throughout the week as well, and seismicity remains elevated.
Categories: Volcano Reports

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

USGS Volcano Current Alerts - Fri, 09/14/2018 - 11:31
Sep 14, 2018 14:45 - 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: A few small earthquakes were recorded at Mount Rainier and Mount St. Helens over the past week. All monitoring systems show that activity at these and the rest of the Cascade Range volcanoes remained at background levels throughout ...
Categories: Volcano Reports

HVO Mauna Loa GREEN/NORMAL - Seismicity slightly elevated. No clear evidence of resumed magmatic recharge.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 17:31
Sep 13, 2018 22:22 - Over the month of August, earthquake activity has declined at Mauna Loa after a slight increase during the month of July. The current seismicity rate is similar to the rate during prior months. Small earthquakes were recorded mainly beneath the summit caldera, upper west flank, and upper Southwest Rift Zone. The largest was a magnitude-2.9. HVO deformation monitoring instruments on Mauna Loa have shown motion related to the strong deflation of the Kīlauea summit that was occurring there during the period of caldera collapse. There is no clear evidence of resumed ...
Categories: Volcano Reports

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

USGS Volcano Current Alerts - Thu, 09/13/2018 - 17:31
Sep 13, 2018 22:22 - No significant activity in August. HVO recorded 1 earthquake in the vicinity of Lō‘ihi.
Categories: Volcano Reports

HVO Hualalai GREEN/NORMAL - No activity of concern.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 17:31
Sep 13, 2018 22:22 - No significant activity in August and no earthquakes were recorded in the vicinity of the volcano. HVO's continuously recording Global Positioning System (GPS) receiver atop Hualālai recorded no significant deformation.
Categories: Volcano Reports

HVO Haleakala GREEN/NORMAL - No activity of concern.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 17:31
Sep 13, 2018 22:22 - No significant activity in August. No earthquakes were recorded in the vicinity of the volcano and the continuously recording Global Positioning System (GPS) instrument atop Haleakalā volcano recorded no significant deformation.
Categories: Volcano Reports

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

USGS Volcano Current Alerts - Thu, 09/13/2018 - 17:31
Sep 13, 2018 22:22 - No significant activity in August. 3 felt earthquakes were recorded 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 deformation.
Categories: Volcano Reports

HVO Kilauea ORANGE/WATCH - Weak lava activity from Fissure 8; Summit quiet.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 14:32
Sep 13, 2018 19:16 - Kīlauea summit and lower East Rift Zone On Kīlauea Volcano's lower East Rift Zone (LERZ), the collapse pit within the fissure 8 cone was no longer incandescent last night but a glowing spot just west of the pit that first appeared on Sept. 11th got wider last night and may be a very small, slow lava flow moving along the west edge of the collapse pit. Since the beginning of September, small lava flows have been observed within the fissure 8 cone, however none have extended outside the walls of the cone. Seismicity and ground deformation remain low at the summit ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Unrest continues. Small earthquakes recorded. No activity seen in satellite data.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 14:32
Sep 13, 2018 18:30 - Low-level unrest continues at Great Sitkin Volcano. Earthquake activity remains elevated. No significant activity was observed in partly cloudy satellite images. 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. No significant activity in seismic data or satellite images.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 14:32
Sep 13, 2018 18:30 - Low-level unrest continues at Cleveland Volcano. No significant activity was observed in cloudy satellite images or detected in seismic or pressure sensor (infrasound) data. Cleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.
Categories: Volcano Reports

AVO Veniaminof ORANGE/WATCH - Eruption of lava flow likely continues. No significant ash emissions.

USGS Volcano Current Alerts - Thu, 09/13/2018 - 14:32
Sep 13, 2018 18:30 - Eruption of a lava flow from Veniaminof volcano's summit cone likely continues, as suggested by continued observations of elevated seismic activity, nighttime incandescence in webcam images, and elevated surface temperatures in thermal satellite data. No significant ash emissions were observed. 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 an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Unrest continues. Small earthquakes recorded. No activity seen in satellite data.

USGS Volcano Current Alerts - Wed, 09/12/2018 - 16:31
Sep 12, 2018 19:36 - Low-level unrest continues at Great Sitkin Volcano. Earthquake activity remains elevated. No significant activity was observed in cloudy satellite images. 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. No significant activity in seismic data or satellite images.

USGS Volcano Current Alerts - Wed, 09/12/2018 - 16:31
Sep 12, 2018 19:36 - Low-level unrest continues at Cleveland Volcano. No significant activity was observed in cloudy satellite images or detected in seismic or pressure sensor (infrasound) data. Cleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.
Categories: Volcano Reports

AVO Veniaminof ORANGE/WATCH - Eruption continues, with lava flow in summit caldera. No significant ash emissions.

USGS Volcano Current Alerts - Wed, 09/12/2018 - 16:31
Sep 12, 2018 19:36 - Veniaminof volcano continues to erupt, feeding a lava flow confined to the ice-filled summit caldera. No significant ash emissions were observed. Elevated seismic activity, nighttime incandescence in webcam images, and elevated surface temperatures in thermal satellite data continue to be recorded. 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 an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, ...
Categories: Volcano Reports

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