USGS Volcano Current Alerts

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Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program
Updated: 1 hour 28 min ago

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

1 hour 28 min ago
Jun 18, 2018 19:24 - Kīlauea Volcano Lower East Rift Zone The eruption from vents in the lower East Rift Zone (LERZ) continues with little change. Fissure 8 fountains, encircled by a spatter cone, continue to feed lava into the well-established channel that flows to the ocean at Kapoho. Occasionally, minor amounts of lava briefly spill over the channel levees. The lava flow is rather broad at the coast and lava is entering the ocean at a single point with an upwelling area offshore and with laze blown onshore. Fissures 16/18 continue to ooze lava and Fissure 6 shows some incandescence ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

11 hours 28 min ago
Jun 18, 2018 08:28 - Kīlauea Volcano Lower East Rift Zone The Lower East Rift Zone (LERZ) eruption in Leilani Estates continues with little change. Fountains ranging between 60 - 165 ft from the Fissure 8 spatter cone continue to feed lava into the well-established channel that flows to the ocean at Kapoho. Occasionally, minor amounts of lava briefly spill over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16/18 continue to ooze lava. Incandescence (visible in PGcam to the left of fissure 8 most nights) and mild spattering were observed ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sun, 06/17/2018 - 23:30
Jun 18, 2018 02:40 - Kīlauea Volcano Lower East Rift Zone The Lower East Rift Zone (LERZ) eruption in Leilani Estates continues with little change. Fountains as high as 165 ft rise from the Fissure 8 spatter cone and continue to feed lava into the well-established channel that flows to the ocean at Kapoho. Occasionally, minor amounts of lava briefly spill over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16/18 continue to ooze lava. Incandescence (visible in PGcam to the left of fissure 8 most nights) and mild spattering were observed ...
Categories: Volcano Reports

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

Sun, 06/17/2018 - 16:30
Jun 17, 2018 19:36 - Seismic activity over the past 24 hours has remained at background levels. No activity was observed in cloudy satellite views over the past 24 hours.
Categories: Volcano Reports

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

Sun, 06/17/2018 - 16:30
Jun 17, 2018 19:36 - Low-level unrest continues at Cleveland volcano. No unusual activity was observed in cloudy satellite images over the past 24 hours. No unusual activity was observed in seismic or pressure sensor 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

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sun, 06/17/2018 - 14:30
Jun 17, 2018 19:09 - Kīlauea Volcano Lower East Rift Zone The Lower East Rift Zone (LERZ) eruption in Leilani Estates continues with little change. Fountains from the Fissure 8 spatter cone continue to feed lava into the well-established channel that flows to the ocean at Kapoho. Occasionally, minor amounts of lava briefly spill over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16/18 continue to ooze lava and incandescence and mild spattering were observed from Fissure 6/15 vicinity yesterday. The flow field is relatively stable with ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sun, 06/17/2018 - 03:30
Jun 17, 2018 08:15 - Kīlauea Volcano Lower East Rift Zone The Lower East Rift Zone (LERZ) eruption in Leilani Estates continues with little change. Fountains from the Fissure 8 spatter cone continue to feed lava into the well-established channel that flows to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16 and 18 continue to ooze lava and mild spattering from Fissure 15 was observed late in the day. The flow field is relatively stable with little change to its size and shape for the ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sun, 06/17/2018 - 00:30
Jun 17, 2018 03:41 - Kīlauea Volcano Lower East Rift Zone The Lower East Rift Zone (LERZ) eruption in Leilani Estates continues with little change over the past few days. Lava fountains from the 170 ft-tall Fissure 8 spatter cone pulsed to heights of 185 to 200 ft overnight. Lava continues to flow through the well-established channel to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16 and 18 continue to ooze lava. Fissure 8, the channel, and the ocean entry are relatively stable with only ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Seismic activity is declining.No significant activity observed in satellite data.

Sat, 06/16/2018 - 15:30
Jun 16, 2018 19:45 - Seismic activity over the past 24 hours has decline to background levels after the steam explosion six days ago. No activity was observed in cloudy satellite views over the past 24 hours.
Categories: Volcano Reports

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

Sat, 06/16/2018 - 15:30
Jun 16, 2018 19:45 - Low-level unrest continues at Cleveland volcano. No unusual activity was observed in cloudy satellite images over the past 24 hours. No unusual activity was observed in seismic or pressure sensor 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

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sat, 06/16/2018 - 15:30
Jun 16, 2018 18:38 - Kīlauea Volcano Lower East Rift Zone The East Rift Zone (LERZ) eruption in Leilani Estates continues with little change over the past few days. Lava fountains from the 170 ft-tall Fissure 8 spatter cone pulsed to heights of 185 to 200 ft overnight. Lava continues to flow through the well-established channel to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16 and 18 continue to ooze lava. Fissure 8, the channel, and the ocean entry are relatively stable with only a ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sat, 06/16/2018 - 04:30
Jun 16, 2018 08:27 - Kīlauea Volcano Lower East Rift Zone The East Rift Zone (LERZ) eruption in Leilani Estates continues with little change over the past few days. This afternoon, lava fountains from Fissure 8 spatter cone pulsed to heights of 180 ft at times. Lava continues to flow through the well-established channel to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16 and 18 continue to ooze lava. Fissure 8, the channel, and the ocean entry are relatively stable with only a small ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Sat, 06/16/2018 - 00:30
Jun 16, 2018 02:59 - Kīlauea Volcano Lower East Rift Zone The eruption of lava continues from the lower East Rift Zone (LERZ) in Leilani Estates with little change relative to the past few days. Today, lava fountains from Fissure 8 reached heights between 100 and 130 ft with bursts up to 180 ft while the cinder and spatter cone that is building around the fissure is now about 170 ft at its highest point. Lava is flowing through the well-established channel from fissure 8 to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad ...
Categories: Volcano Reports

AVO Great Sitkin YELLOW/ADVISORY - Small steam explosion detected in the past week.

Fri, 06/15/2018 - 17:31
Jun 15, 2018 22:14 - A small steam explosion was detected in seismic data at 11:39 AKDT (19:39 UTC) on June 10, 2018 followed by a series of small earthquakes. The Color Code/Alert Level for Great Sitkin was raised to YELLOW/ADVISORY. No infrasound signal from this event was detected. Meteorological clouds at 8000 feet a.s.l. obscured satellite views of the volcano and no volcanic clouds from this explosion were observed in satellite images above the cloud deck. Subsequent clear-sky satellite observations did not indicate elevated surface temperatures. Minor changes in the vicinity of the ...
Categories: Volcano Reports

AVO Cleveland YELLOW/ADVISORY - Unrest continues. Elevated temperatures observed when clear.

Fri, 06/15/2018 - 17:31
Jun 15, 2018 22:14 - Low-level unrest continues at Cleveland Volcano. Moderately elevated surface temperatures at the summit were observed on five days during the past week when viewing conditions were cloud free. No significant activity was detected on the seismic and pressure sensors throughout the week. Future explosive activity is likely and is expected to occur without warning. Previous explosions have produced hazardous conditions primarily near the summit crater, but occasionally they have been large enough to produce a drifting ash cloud. Cleveland volcano is monitored by ...
Categories: Volcano Reports

HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Deformation and seismicity rates remain low.

Fri, 06/15/2018 - 15:31
Jun 15, 2018 19:55 - Activity Summary: Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly. Observations: During the past week, only a few small-magnitude earthquakes occurred beneath the volcano. The number of weekly earthquakes recorded beneath the volcano during the past several months has decreased to near background levels. Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) measurements show no significant changes related to the magma reservoir beneath the summit and upper Southwest Rift Zone. GPS ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Fri, 06/15/2018 - 15:31
Jun 15, 2018 19:03 - Kīlauea Volcano Lower East Rift Zone The eruption of lava continues from the lower East Rift Zone (LERZ) in Leilani Estates with little change relative to the past few days. Lava fountains from Fissure 8 reached heights of 200 ft overnight. The cinder and spatter cone that is building around the fissure is now about 165 ft at its highest point. Lava is flowing through the well-established channel from fissure 8 to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16 and ...
Categories: Volcano Reports

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

Fri, 06/15/2018 - 13:31
Jun 15, 2018 17:56 - 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. Small earthquakes were detected at Mount St. Helens, Mount Rainier, and Mount Baker, which is typical background ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Fri, 06/15/2018 - 03:31
Jun 15, 2018 08:27 - Kīlauea Volcano Lower East Rift Zone The eruption of lava continues from the lower East Rift Zone (LERZ) in Leilani Estates with little change relative to the past few days. Fissure 8 lava fountains reached heights of 200 ft in the afternoon, and the cinder and spatter cone that is building around the fissure is now about 160 ft at its highest point. Lava is flowing through the well-established channel from fissure 8 to the ocean at Kapoho. Occasionally, lava spills over the channel levees. The ocean entry remained fairly broad with laze blown onshore. Fissures 16 ...
Categories: Volcano Reports

HVO Kilauea RED/WARNING - LERZ lava eruption ongoing; sporadic ash emissions continue from Halema'uma'u

Thu, 06/14/2018 - 23:32
Jun 15, 2018 02:14 - Kīlauea Volcano Lower East Rift Zone The eruption of lava continues from the lower East Rift Zone (LERZ) in Leilani Estates with little change over the past few days. Fissure 8 lava fountains continue to reach heights of 200 ft from within the growing cone of cinder and spatter, which is now about 160 ft at its highest point. Lava from Fissure 8 continues to flow through the well-established channel to the ocean at Kapoho, with rare, small overflows of the channel levees. An early afternoon overflight confirmed that activity at the vent and channel continued with ...
Categories: Volcano Reports

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