Hawaii's Kilauea Volcano, one of the most active in the world, has erupted again after a brief pause in activity. This is now Kilauea's third eruption this year.
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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.
Kilauea, Hawaii's youngest volcano, formed underwater around 280,000 years ago, according to the National Park Service. It had erupted almost continuously from 1983 to 2018, and again from 2020 onward.
We know that Mount St.Helens is the volcano in the Cascades most likely to erupt again in our lifetimes. It is likely that the types, frequencies, and magnitudes of past activity will be repeated in the future.
Keep in mind that conditions can change very quickly at the eruption site, both the weather and the behavior of the eruption. It can stay quiet for a while and then suddenly turn on. Stay alert and do not leave the designated routes. Keep your gear, cellphone and safety equipment close.
Rising gradually to more than 4 km (2.5 mi) above sea level, Hawaii's Mauna Loa is the largest active volcano on our planet. Its submarine flanks descend to the sea floor an additional 5 km (3 mi), and the sea floor in turn is depressed by Mauna Loa's great mass another 8 km (5 mi).