News

On November 5, 1880, 115 years ago this week, an eruption began on Mauna Loa's northeast rift zone that would eventually send lava closer to Hilo Bay...

The Island of Hawai'i consists of five coalesced volcanoes, a submarine volcano that has already subsided below sea level, and another, Lō‘ihi...

The 15 volcanoes that comprise the eight principal Hawaiian Islands are the youngest in a linear chain of about 125 volcanoes that stretches for about...

Last week we discussed the different land surveying techniques HVO scientists use to monitor the swelling and movement of active volcanoes.
 

The ground around an active volcano swells, deflates, or shifts as magma moves in and out of the volcano's underground plumbing system. The...

Hawaii is a land of rugged beauty and untamed natural forces swathed in a beguiling gentleness that is unmatched anywhere else on Earth.
 

Hawaii is seismically very active. During a typical month, there are invariably several earthquakes that are large enough to be felt. This past month...

Maps showing volcanic hazard zones for the Big Island were first prepared in 1974 by the U.S. Geological Survey.

Many of the islands that dot the center of the Pacific Ocean are made up of active, dormant, or extinct volcanoes, whose geologic histories are...

April 10th marks the aniversary of the 1926 eruption of Mauna Loa Volcano. The eruption was preceded by several widely felt earthquakes about one hour...