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Mauna Loa volcano
Shield volcano 4170 m / 13,681 ft
Big Island, Hawai'i, 19.48°N / -155.61°W
Current status: restless (2 out of 5)
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Mauna Loa volcano eruptions:
1832, 1843, 1849, 1851, 1852, 1855-56, 1859, 1865-66, 1868, 1870(?), 1871, 1872, 1873, 1873-74, 1875, 1876, 1877, 1879, 1880, 1880-81, 1887, 1892, 1896, 1899, 1903, 1907, 1914-15, 1916, 1919, 1926, 1933, 1935-36, 1940, 1950, 1975, 1984
Typical eruption style:
Dominantly effusive.
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Volcano news: Mauna Loa volcano (Big Island, Hawaii)

Mauna Loa volcano (Hawai'i): HVO weekly report

Friday Jan 24, 2020 23:31 PM | BY: MATTHEW

Mauna Loa caldera, image captured from HVO's MLcam (C) U.S. Geological Survey
Mauna Loa caldera, image captured from HVO's MLcam (C) U.S. Geological Survey
During the past week, HVO seismometers recorded 99 small magnitude earthquakes beneath the upper elevations of the volcano; the strongest was a magnitude-3.1 earthquake on January 21. Most earthquakes occurred at shallow depths of less than 5 km (~3 miles) beneath the volcano's surface.

Global Positioning System (GPS) measurements show continued slow summit inflation, consistent with magma supply to the volcano's shallow storage system.

Gas concentrations at the Sulphur Cone monitoring site on the Southwest Rift Zone remain stable. Fumarole temperatures as measured at both Sulphur Cone and the summit have not changed significantly.
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Links / Sources:
  • https://volcanoes.usgs.gov/volcanoes/mauna_loa/status.html
Previous news
Sunday, Jan 12, 2020
During the past week, HVO seismometers recorded 56 small magnitude earthquakes beneath the upper elevations of the volcano. Most earthquakes occurred at shallow depths of less than 5 km (~3 miles) beneath the volcano. ... [more]
Thursday, Dec 19, 2019
HVO report that Mauna Loa volcano is not currently erupting. The deformation and seismicity rates have not changed substantially over the past week and remain above long-term background levels. ... [more]
Mauna Loa caldera, image captured from HVO's MLcam (C) U.S. Geological Survey
Sunday, Dec 08, 2019
HVO report that during the past week, approximately 70 small-magnitude earthquakes (nearly all smaller than M2.0) were detected beneath the upper elevations of Mauna Loa. Most of the earthquakes occurred at shallow depths of less than 6 km (around 4 miles) below sea level. ... [more]
Sunday, Nov 24, 2019
During the past week, HVO detected approximately 62 small-magnitude earthquakes (most of them were smaller than M2.0) beneath the upper elevations of Mauna Loa. Most of the earthquakes occurred at shallow depths of less than 5 km (~3 miles) below sea level. ... [more]
Mauna Loa caldera, image captured from HVO's MLcam (C) U.S. Geological Survey
Sunday, Nov 17, 2019
The seismicity and deformation levels on Mauna Loa volcano have not changed considerably over the past few weeks, but still remain elevated above background levels. ... [more]

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