News

What exactly do volcano threat rankings mean?

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.7 earthquake north of the Island of Hawai‘i and east of the...

Hawai‘i is the quintessential "hotspot." The geologic definition of a "hotspot" is that region of the Earth beneath an area that has experienced high...

Molten lava flows downhill. This simple fact has spurred many residents on the Island of Hawai‘i, where Kīlauea Volcano has been erupting for more...

A magnitude-3.5 earthquake beneath Haleakalā Volcano on Maui was recorded by the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) on Sunday...

Hawaiian Volcano Observatory geophysicists are conducting a routine GPS survey of Haleakalā Volcano on the island of Maui this week as part of the U.S...

A new geologic map of the State of Hawai`i became publicly available this week. The publication is free online as U.S. Geological Survey Open-File...

A beautiful sunrise of the mountainside. Photo taken from the top of Hualālai volcano.

Haleakalā volcano, on Maui, is still in its postshield stage of volcanic evolution, as determined by 50 new isotopic ages. The volcano was long...

Every few months HVO receives a phone call from a concerned citizen explaining that steam is billowing from a new hole in a yard or pasture. Is this...