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Random pictures
Mauna Loa volcano with gentle slopes typical of a shield volcano.
Mauna Loa volcano with gentle slopes typical of a shield volcano.

Mauna Loa activity update:
Earthquakes under Manua Loa during the past week (image: HVO / USGS)
Wednesday, Jul 03, 2019
The alert level for the volcano has been raised to yellow two days ago. This doesn't mean that an eruption is expected to occur in a near future, but acknowledges that the volcano is currently preparing itself for its next eruption, which will come, sooner or later, but currently without possibility to indicate a specific time frame. ... [more]
5-years trend of inflation of Mauna Loa volcano (image: HVO / USGS)
Saturday, Jun 08, 2019
The Hawaiian volcano observatory (HVO) reported a slight increase in tiny earthquakes at shallow depths beneath the summit caldera as well as continuing trend of inflation. However, even though these are likely long-term precursors of the volcano preparing itself for its next eruption, current unrest does not merit an increase of the official alert level (green), and no eruption is expected in the near to medium-term future (weeks to months). ... [more]
 

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)
Mauna Loa webcams / live data | Reports
Mauna Loa volcano books | Tours
Last update: 3 Jul 2019 (elevated seismic activity, continuing slow inflation)
Typical eruption style: Dominantly effusive.
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
TimeMag. / DepthDistanceLocation
Tue, 16 Jul 2019
Tue, 16 Jul 08:48 UTCM 1.0 / 7.9 km18 km19km N of Pahala, Hawaii (USA)
Sun, 14 Jul 2019
Sun, 14 Jul 15:25 UTCM 1.9 / 8.7 km13 km26km W of Volcano, Hawaii (USA)
Sun, 14 Jul 10:09 UTCM 2.2 / 2.3 km17 km15km NNW of Pahala, Hawaii (USA)
Sun, 14 Jul 03:05 UTCM 2.1 / 2.8 km16 km13km ENE of Honaunau-Napoopoo, Hawaii (USA)
Sun, 14 Jul 02:34 UTCM 2.2 / 9.3 km13 km22km N of Pahala, Hawaii (USA)
View all recent quakes
Mauna Loa is the world's largest and one of its most active volcanoes - a giant shield volcano on the Big Island of Hawai'i.

Background:

Mauna Loa, world's largest mountain and volcano, is a archetype of a basaltic shield volcano in its late mature stage of life, and only about 600,000-1,000,000 years old. Although not erupting as frequently as its younger neighbor Kilauea, it is also one of the most active volcanoes of the world. When it erupts, its eruptions are usually huge and produce large rivers of lava that have repeatedly threatened the town of Hilo.
Mauna Loa rises almost 9 km above the sea floor and the weight of the massive mountain has depressed the oceanic crust down by about 8 kilometers, so the whole pile of volcanic rocks produced from Mauna Loa is probably about 8+5+4=17 kilometers! It has eruptions both from its summit, occupied by a large caldera, and its NE and SW rift zones on the flanks. Almost 90% of Mauna Loa's surface is is covered by lavas less than 4000 years old, while about 50% of its surface is covered by lavas no older than about 1500 years old, while about 25% are covered by lava flows younger than about 750 years, i.,e. emplaced after the formation of the Mokuaweoweo summit caldera.

Mauna Loa Photos:




Mauna Loa volcano tours
Hawaii - Birthplace of Islands (14 days walking and study tour to Oahu, Kauai, Maui, Hawai'i)

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