HVO Mauna Loa Status

Recent Mauna Loa Status Reports, Updates, and Information Releases



HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, June 30, 2016, 9:55 AM HST (Thursday, June 30, 2016, 19:55 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Seismicity remains elevated above the long-term background level, but no significant changes were recorded during the past week. Global Positioning System (GPS) measurements continue to show ground surface deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with recently inferred inflation concentrated mainly in the southwestern part of this magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawai?i.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at K?lauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov

MORE INFORMATION

Daily Activity Summary also available by phone: (808) 967-8862

Subscribe to these messages: http://volcanoes.usgs.gov/vns/

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Sulfur dioxide emission rate discussion: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō¨) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawai'i (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf
Hawai'i Volcanoes National Park: http://www.nps.gov/havo/planyourvisit/lava2.htm

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.





HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Friday, June 24, 2016, 10:13 AM HST (Friday, June 24, 2016, 20:13 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Mauna Loa is not erupting. Seismicity rates have decreased significantly since the earthquake activity recorded in late-May, but they remain above previously established baselines. Global Positioning System (GPS) measurements continue to show ground surface deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with recently inferred inflation concentrated mainly in the southwestern part of this magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawai?i.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at K?lauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov

MORE INFORMATION

Daily Activity Summary also available by phone: (808) 967-8862

Subscribe to these messages: http://volcanoes.usgs.gov/vns/

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Sulfur dioxide emission rate discussion: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō¨) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawai'i (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf
Hawai'i Volcanoes National Park: http://www.nps.gov/havo/planyourvisit/lava2.htm

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.





HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, June 16, 2016, 10:36 AM HST (Thursday, June 16, 2016, 20:36 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Mauna Loa is not erupting. Seismicity rates have decreased significantly since the earthquake activity recorded in late-May, but they remain above previously established baselines. Global Positioning System (GPS) measurements continue to show ground surface deformations related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with recently inferred inflation concentrated mainly in the southwestern part of this magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawaiʻi.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at Kīlauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov



The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.





HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, June 9, 2016, 8:23 AM HST (Thursday, June 9, 2016, 18:23 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Mauna Loa is not erupting. A small earthquake swarm occurred beneath Mauna Loa’s west flank from Saturday, May 28, through Tuesday, May 31. Most of the earthquakes occurred at depths between 5-8 km (3-5 mi) below the surface and the largest event was a magnitude 2.8. This activity is part of the expected range of behaviors for Mauna Loa and does not represent a significant change. Seismicity rates have since decreased, though are nonetheless elevated above the long-term background. Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with inflation recently occurring mainly in the southwestern part of the magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawaiʻi.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at Kīlauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov

The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.





HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, June 2, 2016, 1:35 PM HST (Thursday, June 2, 2016, 23:35 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Mauna Loa is not erupting. A small earthquake swarm occurred beneath Mauna Loa’s west flank from Saturday, May 28 through Tuesday, May 31. Most of the earthquakes occurred at depths between 5-8 km (3-5 mi) below the surface and the largest event was a magnitude 2.8. This activity is part of the expected range of behaviors for Mauna Loa and does not represent a significant change. Seismicity rates have since decreased, though are nonetheless elevated above the long-term background. Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with inflation recently occurring mainly in the southwestern part of the magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawaiʻi.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at Kīlauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov

The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.





HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, May 19, 2016, 10:47 AM HST (Thursday, May 19, 2016, 20:47 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Mauna Loa is not erupting. Seismicity remains elevated above the long-term background level, but no significant changes were recorded over the past week. Deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone continues, with inflation recently occurring mainly in the southwestern part of the magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawaiʻi.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at Kīlauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov

The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.





HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, May 12, 2016, 1:58 PM HST (Thursday, May 12, 2016, 23:58 UTC)


MAUNA LOA VOLCANO (VNUM #332020)
19°28'30" N 155°36'29" W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Mauna Loa is not erupting. Seismicity remains elevated above the long-term background level, but no significant changes were recorded over the past week. Deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone continues, with inflation recently occurring mainly in the southwestern part of the magma storage complex.




Background: Mauna Loa is the largest active volcano on our planet, rising gradually to 4,170 m (13,681 ft) above sea level. Its long submarine flanks descend an additional 5 km (3 mi) below sea level to the ocean floor. The ocean floor directly beneath Mauna Loa is, in turn, depressed by the volcano's great mass another 8 km (5 mi). This places Mauna Loa's summit about 17 km (56,000 ft) above its base. The enormous volcano covers half of the Island of Hawaiʻi.

Mauna Loa has erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984.

MORE INFORMATION

For more information on Mauna Loa and its hazards, see the USGS Fact sheet available at:
http://pubs.usgs.gov/fs/2012/3104/fs2012-3104.pdf.

For information on activity at Kīlauea Volcano, please see:
http://hvo.wr.usgs.gov/activity/kilaueastatus.php

HVO Contact: askHVO@usgs.gov

The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.




Update Archive


Older updates can be found using the Volcano Archive Search page.

New Update Format


For more information about the Volcano Alert Level and Aviation Color Code, please see the U.S. Geological Survey's Alert Notification System for Volcanic Activity Fact Sheet (pdf) or the USGS Volcanic Activity Alert-Notification System web page.