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The Volcano Adventure Guide
: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
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Shield volcano 4170 m / 13,681 ft
Big Island, Hawai'i, 19.48°N / -155.61°WCurrent status
: normal or dormant
(1 out of 5)
Mauna Loa webcams / live data
| ReportsMauna Loa volcano books | ToursMauna 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, 1984Typical eruption style:
Dominantly effusive.Last earthquakes nearby
Mauna Loa volcano toursHawaii - Birthplace of Islands
(14 days walking and study tour to Oahu, Kauai, Maui, Hawai'i)Latest satellite images
Volcano news: Mauna Loa volcano (Big Island, Hawaii)
Fri, 22 Jun 2018, 06:30
Volcanic unrest at the volcano has ceased (at least for now), and the volcano observatory lowered the alert level of the volcano back to "normal" (green): ...more
Tue, 6 Sep 2016, 14:58
M4.0 earthquake under Mauna Loa today
A magnitude 4.0 earthquake
occurred at 2.4 km depth beneath the summit caldera of the volcano half an hour ago (04:25 am in Hawaii). ...more
Mon, 25 Jul 2016, 06:02
Weekly earthquake rate of Mauna Loa during the past year (HVO)
The volcano is not erupting, but continues to show unrest. Deformation and seismic activity remain above long-term background levels. ...more
Fri, 30 Oct 2015, 06:45
Seismic unrest continues at the volcano, but at lower levels than during mid-late summer, HVO reports: ...more
Fri, 18 Sep 2015, 06:47
The alert level of the world's largest volcano was raised a notch to "ADVISORY", and the Aviation Color code to "YELLOW" becuase shallow earthquakes have recently appeared in increasing numbers under the volcano. There is no sign that the volcano is about to erupt in a very near future, but it could be a medium- or long-term precursor of a next eruption. ...more
Wed, 18 Sep 2013, 10:51
Recent earthquakes under Mauna Loa volcano
A small earthquake swarm occurred last week under the volcano. During 5-7 September, HVO detected about 350 small earthquakes up to magnitude 2.4 in a tightly clustered area at about 7 km depth west of the summit caldera. Only about 25 were strong enough to be located (map). ...more
Fri, 5 Jul 2013, 15:26
Very weak unrest in the form of inflation and seismic activity continues at the largest active volcano of our earth, which has not erupted since 1984. However, this activity is not strong enough to justify a raise of the alert level from green "normal" to yellow "unrest". There is currently no sign that Mauna Loa will erupt any time soon. ...more
Wed, 12 Jun 2013, 14:39
The latest update of the USGS mentions that minor inflation of a shallow magma reservoir beneath Mauna Loa may be occurring. Seismicity rates were slightly elevated. However, the level of observed seismicity is far from alarming and the alert level remains at green. No eruption is expected in the near future. ...more
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: A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category.