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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 (Big Island, Hawaii): weekly volcanic activity report 23-30 Apr 2020

Friday May 01, 2020 10:58 AM | BY: MARTIN

Southwest Rift Zone at Mauna Loa volcano (image: HVO)
Southwest Rift Zone at Mauna Loa volcano (image: HVO)
During the past week the Hawaiian Volcano Observatory (HVO) recorded 62 small-magnitude earthquakes on the volcano's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 kilometers (~5 miles) below ground level.
Slow summit inflation continues to be detected by the GPS, consistent with magma supply to the volcano's shallow storage system.
Gas concentrations and fumarole temperatures remain stable.
Source: Hawaiian Volcano Observatory volcano activity update 1 May 2020
Previous news
Thursday, Apr 23, 2020
The Hawaiian Volcano Observatory (HVO) recorded 78 small-magnitude earthquakes on Mauna Loa’s summit and upper-elevation flanks over the past week. The largest of these earthquakes measured at magnitude 2.3 beneath the south caldera. Most of these earthquakes occurred at depths of less than 8 kilometers (~5 miles) below ground level. ... [more]
Saturday, Apr 04, 2020
Over the past week, HVO recorded 47 small-magnitude earthquakes on the Mauna Loa's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 kilometers (~5 miles) below ground level, with the largest measuring magnitude 2.1 on the volcano's northwest flank. There is continued slow summit inflation, which HVO state it consistent with magma supply to the volcano's shallow storage system. Gas concentrations and fumarole temperatures remain stable. [more]
Friday, Mar 27, 2020
The Hawaiian Volcano Observatory (HVO) recorded around 42 small-magnitude earthquakes beneath the Mauna Loa’s upper elevations. Most of these events occurred at shallow depths of less than 5 km (~3 miles) below ground level. There were no events on Mauna Loa above magnitude 2.0. There is continued slow summit inflation, which HVO say is consistent with magma supply to the volcano's shallow storage system. Gas concentrations and fumarole temperatures remain stable. [more]
Location of earthquakes under Mauna Loa over the past week (C) U. S. Geological Survey
Thursday, Mar 19, 2020
The Hawaiian Volcano Observatory (HVO) recorded around 87 small-magnitude earthquakes beneath the volcano's upper elevations over the past week. Most of these events occurred at shallow depths of less than 5 kilometers (~3 miles) below ground level, with the strongest earthquake measuring magnitude 2.3 on the morning of March 19. This earthquake was located in the radial vents area west of the summit caldera within the volcano. There is continued summit inflation which HVO assert is due to “consistent with magma supply to the volcano's shallow storage system.” Both gas concentrations and fumarole temperatures remain stable. [more]
Friday, Mar 13, 2020
The Hawaiian Volcano Observatory (HVO) recorded around 156 small-magnitude earthquakes beneath the volcano's upper elevations over the past week. Most of these earthquakes occurred at shallow depths of less than 5 kilometers (~3 miles) below ground level. The strongest even was a magnitude 2.27 in the morning of March 8. This particular earthquake was located in the radial vents west of the summit caldera within the volcano 0.5 km (0.4 miles) above sea level. Last week's flurry just south on known fault structures south of the northeast rift zone is tapering off. ... [more]
 

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