When was the last time Mauna Loa and Kilauea erupted at the same time?

Simultaneous eruption of both volcanoes has been rare except at times when Kilauea was continuously active before 1924. The only post-1924 occurrence of simultaneous eruption was in March 1984, when activity at both volcanoes overlapped for one day.



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Mauna Loa is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaii in the Pacific Ocean. The largest subaerial volcano in both mass and volume, Mauna Loa has historically been considered the largest volcano on Earth, dwarfed only by Tamu Massif.



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The eruption that began on September 10, 2023 has ended. No lava fountains, flows, or glow are visible at this time. Read the activity summary of Kilauea, courtesy of USGS. Read the activity summary of Mauna Loa, courtesy of USGS.

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Photo and Video Chronology – Kilauea summit eruption continues – September 13, 2023. The Kilauea summit eruption that began on September 10th, continues. Eruptive activity is confined to the downdropped block and Halema?uma?u crater within Kilauea's summit caldera.

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Made up of more than 450 volcanoes, the Ring of Fire stretches for nearly 40,250 kilometers (25,000 miles), running in the shape of a horseshoe (as opposed to an actual ring) from the southern tip of South America, along the west coast of North America, across the Bering Strait, down through Japan, and into New Zealand ...

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There are no active volcanoes in the United Kingdom of Great Britain and Northern Ireland, although a few do exist in some British Overseas Territories, including Queen Mary's Peak in Tristan da Cunha, Soufrière Hills volcano on the Caribbean island of Montserrat, as well as Mount Belinda and Mount Michael in the ...

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Could It Erupt Again? Yes! Mount Vesuvius is considered an active volcano that sits on top of an extremely deep layer of magma—154 miles into the earth. Geologists think the volcano is overdue for an eruption, so it is likely to happen and it won't be pretty.

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