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The source for the isotopically-enriched Hawaiian magmas contains peridotites that experienced near-surface melting prior ...

The known sequence of Maunaloa’s 1868 events began with an eruptive phase beginning at about dawn March 27 at the summit, lasting a couple of hours. Seismicity escalated thereafter, with Kaʻū ...

March 27 marks the anniversary of the onset of Mauna Loa’s dramatic 1868 eruption, when lava flows from the Southwest Rift Zone severely impacted the Ka‘u district. However, this may not have been the ...

March 27 marks the anniversary of the onset of Mauna Loa’s dramatic 1868 eruption, when lava flows from the Southwest Rift ...

A Hawaii County program offering to purchase Puna residents’ lava-damaged properties should finally wrap up this year. The Voluntary Housing Buyout Program launched in 2021 to offer residents whose ...

In the shadow of Alaska's bustling city, Mount Spurr whispers of its ancient power. Elevated gas emissions suggest a restless ...

Stay updated on the ever-changing atmospheric conditions with our comprehensive Weather category. From local forecasts to global climate patterns, we bring you the latest insights ...

Observatory leaders have assured local emergency officials their public service will continue, but questions linger about how ...

The eruption lasted 29 hours between 9:26 a.m. Hawaiian time Wednesday through 1:49 p.m. Thursday, according to the U.S. Geological Survey. During the last eight hours, fountains shot up to 600 feet ...