Mauna Loa’s 1975 Eruption in Terms of Today’s Volcano Alert Level

Shortly before midnight on July 5, 1975, Mauna Loa Volcano awakened with a shudder.
July 12, 2019

USGS Volcano Notification Service Informs Residents About Hawaiian Volcanoes

HVO notifications include Volcanic Activity Notices (VANs), Status Reports, Volcano Observatory Notices for Aviation (VONAs) and Information Statements.
July 03, 2019

Getting in The (Rift) Zone: Why & How They Erupt

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.
June 28, 2019

Reading the Rainbow: How to Interpret an Interferogram

Interferometric Synthetic Aperture Radar calculates the difference between two radar images acquired by an orbiting satellite taken at different times.
June 21, 2019

How to Read a Seismogram: See the Earth Shake—on Your Screen

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.
June 13, 2019

New Eyes In the Sky Monitor Hawaiian Volcanoes

Unmanned Aircraft Systems (drone) enabled HVO to obtain crucial data that would otherwise have been difficult or impossible to obtain during the 2018 eruption.
June 06, 2019

USGS to Survey Kīlauea Volcano From Summit to Kumukahi

USGS HVO scientists plan to resurvey Kīlauea Volcano’s ground surface to document changes brought about by the 2018 eruption...
June 02, 2019

HPPA Releases 2018 Impact Report

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)
May 20, 2019

VOLCANO WATCH: Students Use Science to Benefit Communities

During the 2018 eruption of Kīlauea Volcano, when fissures erupted and lava flowed in the LERZ, many Puna residents were displaced from their homes.
May 16, 2019

HVO UPDATE: Kīlauea Remains an Active Volcano

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