Hawai'i Volcano Blog
Mauna Loa Eruption: What you need to know
Big Island Now will provide information about the Mauna Loa eruption as it is made available. This information will be updated regularly.
First flight over Mauna Loa shows several lava flows in Northeast Rift Zone
The first flight over the volcano was conducted at about 6:30 a.m. on Monday and it confirmed that the eruption of Mauna Loa has migrated from the summit to the Northeast Rift Zone.
Big Island’s Mauna Loa erupts for first time in 38 years
The National Weather Service has issued an Ashfall Advisory for all districts of Hawaiʻi Island through today. Trace amounts of ashfall and volcanic gas is expected.
Volcano Watch: What are the Volcano Alert Level and Aviation Color Code?
The Hawaiian Volcano Observatory sets the two designations for volcanoes in Hawaii and American Samoa.
Volcano Watch: Learning from the impacts of Kīlauea’s 2018 LERZ lava flows
More than 8,000 photographs taken before, during and after the eruption, along with satellite imagery, make up the largest available dataset of lava flow impacts in the world.
Volcano Watch: Volcanoes of American Samoa
Ta‘ū volcano in American Samoa experienced volcanic unrest in the form of an earthquake swarm that was felt throughout the Manuʻa Islands (Ofu-Olosega and Ta‘ū Islands) from late July through early September 2022.
Volcano Watch: Inflating volcanoes or cloudy data? Discerning deformation from noise with InSAR
Satellites orbiting the Earth can provide normal “pictures” of a place, but can also provide thermal images, measure amounts and types of gases, changes in gravity and topography.
Alert level for Mauna Loa erupting remains at yellow (advisory), despite the hype
There’s a whole lot of warning going on when no warnings have been issued.
Volcano Watch: Aftershock forecasts let you know what to expect after a large earthquake
After damaging earthquakes, response and recovery take place under the threat of aftershocks.
The message Ocean View residents were told about Mauna Loa: Be prepared
Emotions ran high Saturday afternoon in Ocean View as residents living in the community on Mauna Loa’s Southwest Rift Zone got an update on the sleeping giant’s status and had a chance to speak with and ask questions.
Volcano Watch: A year of continuous eruption at Halemaʻumaʻu? Close, but not quite
During the late fall and winter of 2021–2022, the eruption would episodically pause for periods lasting from hours to days.
Volcano Watch: Earthquakes and volcanoes, a recipe for preparedness
Feeling occasional earthquakes is part of the experience of living in Hawai‘i, especially on the Island of Hawai‘i.
Volcano Watch: Recent events at Mauna Loa remind us to be prepared for quick changes
The last eruption of Mauna Loa occurred in 1984 and began in a style typical of the volcano.
Volcano Watch: How Kīlauea volcano fills its craters
Crater filling at Kīlauea is sometimes like pouring liquid into a mug, but more often it is like injecting haupia crème into a crispy malasada.
Volcano Watch: Where’s That Lava Headed and When Will it Get There?
Although there is a great deal we do not know about what a volcano is about to do, we can make some short-term forecasts based on what is currently happening.
Volcano Watch: Ahuʻailāʻau Gets Geophysical ‘X-ray’ Using Ground Penetrating Radar
Scientists from the USGS Hawaiian Volcano Observatory (HVO) and collaborators from the University of South Florida had the unique opportunity to get a peek at the layers inside Ahuʻailāʻau
Volcano Watch: Recent Eruptions in Iceland Sparked Interest Far And Wide
Footage of Iceland’s Fagradalsfjall eruption on Reykjanes Peninsula in 2021 showed glowing lava flows and bubbling cones that were evocative of Hawaiian eruptions.
Volcano Watch: A Bright Future for HVO’s Geodetic Network
The USGS Hawaiian Volcano Observatory’s geodetic network is actively being upgraded to help scientists monitor and respond to volcanic activity.
Volcano Watch: HVO Responds to American Samoa Earthquake Reports
Earthquakes have been felt since late July in the Manuʻa Islands of American Samoa in the South Pacific. These earthquakes are likely associated with magmatic activity beneath the islands. The USGS Hawaiian Volcano Observatory (HVO) is working closely with federal partners, American Samoan officials, and local residents to better understand the source and potential hazard implications of these ongoing earthquakes.
