Shortly before midnight on July 5, 1975, Mauna Loa Volcano awakened with a shudder.

HVO notifications include Volcanic Activity Notices (VANs), Status Reports, Volcano Observatory Notices for Aviation (VONAs) and Information Statements.

Rift zones are areas of weakness in the volcano which form early in its lifetime, likely due to spreading of the volcano as it settles.

Interferometric Synthetic Aperture Radar calculates the difference between two radar images acquired by an orbiting satellite taken at different times.

The USGS Hawaiian Volcano Observatory and its partners operate a network of seismic monitoring stations on the Island of Hawai‘i and throughout the state.

Unmanned Aircraft Systems (drone) enabled HVO to obtain crucial data that would otherwise have been difficult or impossible to obtain during the 2018 eruption.

USGS HVO scientists plan to resurvey Kīlauea Volcano’s ground surface to document changes brought about by the 2018 eruption...

HPPA has released a new PDF version of their 2018 Impact Report for a review of a year that truly fits the definition of hulihia (overturning and change)

During the 2018 eruption of Kīlauea Volcano, when fissures erupted and lava flowed in the LERZ, many Puna residents were displaced from their homes.

Hawaiian Volcano Observatory released an update on Tuesday, May 14, 2019.