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Channelized ‘A‘ā flow at top of Pūlama pali

Typical lava lake activity at Kīlauea's summit, slowly rising lake level

The engagement of written history and geology, two ordinarily separated academic disciplines, has—once more—proven unexpectedly fruitful in our...

Pu‘u ‘Ō‘ō lava flow continues advancing downslope

Early on the morning of May 24, 2016, USGS Hawaiian Volcano Observatory scientists were alerted by text message that a tiltmeter on the Pu‘u ‘Ō‘ō cone...

Pu‘u ‘Ō‘ō lava flow still moving downslope

Lava flow southeast of Pu‘u ‘Ō‘ō

During the past 148 years, Mauna Loa Southwest Rift Zone eruptions have sent massive lava flows across Hawai‘i Island's main road six times: in 1868...

Island of Hawai‘i residents, especially those living in South Kona and Ka‘ū Districts, which are at particular risk from Mauna Loa's Southwest Rift...

Views of Pu‘u ‘Ō‘ō and its recent breakouts