News

Three deposits from explosive eruptions at the summit of Mauna Loa are located west, northwest, and east of Moku‘āweoweo, the volcano's summit caldera...

Already reeling from a destructive earthquake and deadly tsunami and mud flow on April 2, 1868, Ka‘ū residents on the Island of Hawai‘i hoped for a...

In this new USGS Open-File Report, artwork is matched with the approximate date and volcanological context of the scene, showing eruptions at Kīlauea...

On March 14, HVO's webcam [MLcam] captured this image of a double rainbow.

On January 3, 2018, Pu‘u ‘Ō‘ō on Kīlauea Volcano's East Rift Zone reaches its 35th birthday. 

Lava erupting from the active vent on the east flank of Pu‘u ‘Ō‘ō has not entered the ocean or reached the Kamokuna lava delta during the past month...

Where do we stand today with big-picture knowledge of Kīlauea and Mauna Loa acquired in the past few decades?

January 2018 is Hawai‘i Island's 9th annual Volcano Awareness Month. 

A new HVO webcam provides improved views of Mauna Loa's summit caldera, Moku‘āweoweo, from the northwest rim. 

A widely-held belief is that Thomas Jaggar, founder of the Hawaiian Volcano Observatory, was able to stop a Mauna Loa lava flow in 1935. But is it...