HVO Mauna Loa Status

Recent Mauna Loa Status Reports, Updates, and Information Releases


HAWAIIAN VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Thursday, February 11, 2016 1:42 PM HST (Thursday, February 11, 2016 23:42 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 long-term background levels. In the last week, earthquakes at Mauna Loa occurred mostly beneath the volcano’s upper Southwest Rift Zone and southern caldera region at depths of less than 5 km (3 mi). Global Positioning System (GPS) measurements show continued 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, February 4, 2016 9:11 AM HST (Thursday, February 4, 2016 19:11 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. No significant change in seismicity was recorded beneath the volcano in the past week. In the past week, earthquakes at Mauna Loa occurred mostly beneath the volcano's south caldera and upper Southwest Rift Zone at depths less than 5 km (3 mi). Global Positioning System (GPS) measurements 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, January 28, 2016 9:46 AM HST (Thursday, January 28, 2016 19:46 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. No significant change in seismicity was recorded beneath the volcano in the past week, remaining elevated above long-term background levels. In the past week, earthquakes at Mauna Loa occurred mostly beneath the volcano’s upper Southwest Rift Zone at depths less than 5 km (3 mi). Global Positioning System (GPS) measurements 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, January 21, 2016 9:02 AM HST (Thursday, January 21, 2016 19:02 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. No significant change in seismicity was recorded beneath the volcano in the past week, remaining elevated above long-term background levels. In the past week, earthquakes at Mauna Loa occurred mostly beneath the volcano’s upper Southwest Rift Zone at depths less than 5 km (3 mi). Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir complex beneath the summit and upper Southwest Rift Zone.



_______________________________________________________________________________________________________________________________________

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, January 14, 2016 9:49 AM HST (Thursday, January 14, 2016 19:49 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. No significant change in seismicity was recorded beneath the volcano in the past week, remaining elevated above long-term background levels. In the past week, earthquakes at Mauna Loa occurred mostly beneath the volcano’s upper Southwest Rift Zone at depths less than 5 km (3 mi). Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir complex beneath the summit and upper Southwest Rift Zone.



_______________________________________________________________________________________________________________________________________

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, January 7, 2016 10:10 AM HST (Thursday, January 7, 2016 20:10 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. No significant change in seismicity was recorded beneath the volcano in the past week, remaining elevated above long-term background levels. In the past week, earthquakes at Mauna Loa occurred mostly beneath the volcano’s upper Southwest Rift Zone at depths less than 5 km (3 mi). Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir complex beneath the summit and upper Southwest Rift Zone.



_______________________________________________________________________________________________________________________________________

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, December 31, 2015 7:58 AM HST (Thursday, December 31, 2015 17:58 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 long-term background levels. In the last week, earthquakes at Mauna Loa occurred mostly beneath the volcano’s upper Southwest Rift Zone at depths less than 5 km (3 mi). Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir complex beneath the summit and upper Southwest Rift Zone.



_______________________________________________________________________________________________________________________________________

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 HVO Alert Archive Search.

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.