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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...

The long-lived eruption on Kīlauea's East Rift Zone took a short break starting Tuesday, August 22. Before the pause in activity, we observed that the...

A recent visitor to the Hawaiian Volcano Observatory was involved with the removal of abandoned vehicles from the area surrounding the Sand Hill cone...

The rapidly changing geology in the Hawaiian Islands has profound consequences for the plants and animals in Hawai'i on several time scales.

The eruption on Kīlauea's East Rift Zone continues with little change. Lava is erupting from two vents located on the south and west flanks of the Pu...

The mission of the U.S. Geological Survey's Hawaiian Volcano Observatory is to monitor the volcanoes of Hawaii, to study the geological processes...

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...