Hawaii Volcano Blog

Thursday, October 21, 2021

VOLCANO WATCH: The Canary Islands ‘Mega-Tsunami’ Hypothesis And Why it Doesn’t Carry Water

The recent eruption on La Palma, in the Canary Islands, has stimulated speculation that the volcano might collapse, creating a tsunami that would devastate the east coast of North and South America. But is such a scenario possible or likely?
Friday, October 15, 2021

Volcano Watch: Large Earthquake reminds us to ‘Drop, Cover, and Hold On’

The large earthquake, caused by bending of the oceanic plate, serves as a stark reminder that the State of Hawaiʻi is no stranger to potentially damaging earthquakes.
Friday, October 08, 2021

What’s That Rising From the Lava Lake?

Recent activity at Kīlauea has USGS Hawaiian Volcano Observatory (HVO) scientists reflecting on prior observations and how they compare to recent activity.
Monday, October 04, 2021

Eruption Update: Kīlauea Calming Down

HVO scales back warning levels at eruption site due to new data Monday.
Wednesday, September 29, 2021

Kīlauea Awakens as New Eruption Commences Wednesday

Kīlauea volcano has stirred awake yet again.
Friday, September 24, 2021

Observations and Impacts of the 2017–18 Ambae, Vanuatu Eruption

The island of Ambae, in Vanuatu, is a large basaltic shield volcano that lies along the subduction zone between Fiji and Papua New Guinea in the South Pacific.
Saturday, September 18, 2021

Volcano Watch: How Does HVO Determine Regions Most Threatened by Lava Flows?

Most residents of the Island of Hawaiʻi live on one of four potentially active volcanoes and probably have wondered about the threat of lava flows at one time or another. 
Sunday, September 12, 2021

Volcano Watch: Mapping Kīlauea’s Gas Emissions

Over the summer of 2021, USGS Hawaiian Volcano Observatory (HVO) scientists conducted a detailed gas survey of the caldera floor and rim in order to understand the distribution of current emissions.
Saturday, September 04, 2021

Eruption? Intrusion? What’s the difference?

HVO explains the difference between an intrusion and eruption following a flurry of activity south of the Kīlauea caldera a week ago.
Friday, August 27, 2021

Volcano Watch: New Kīlauea Summit Intrusion Draws Comparison to Past Activity

Late Monday afternoon, earthquake activity picked up at Kīlauea’s summit.
Thursday, August 26, 2021

Kīlauea Update: Earthquake Swarm has Waned

The earthquake swarm that began beneath the south part of Kīlauea caldera, within Hawaiʻi Volcanoes National Park has waned.
Saturday, August 21, 2021

Volcano Watch: ‘Ailā‘au—the Largest Subaerial Kīlauea Lava Flow

Kīlauea volcano alternates between periods dominated by lava flows, such as the one we are currently in, and periods of explosive activity.
Friday, August 13, 2021

Volcano Watch: 1790 Was a Bad Year at Kīlauea

More people were probably killed by the 1790 eruption of Kīlauea than by any other eruption in what is now the United States.
Friday, August 06, 2021

Spaceborne Sentinel Keeps Watch Over Hawaiian Volcanoes

Many imaging satellites are polar orbiting, staying closer to Earth’s surface in a low orbit.
Thursday, July 29, 2021

VOLCANO WATCH, Under the Radar: Using Weather Stations to Study Kīlauea’s Plume

The water lake in Halema‘uma‘u was 164 feet deep and growing when Kīlauea summit erupted on Dec. 20.
Friday, July 23, 2021

Volcano Watch: Hawaiian Volcanoes are Heavy

As Hawaiian volcanoes erupt and grow, they add more and more weight to the Earth’s surface.
Friday, July 09, 2021

Remembering Mauna Loa’s Eruption in July 1975

Mauna Loa erupted 46 years ago this week, on July 5–6, 1975, in a 20-hour event.
Friday, July 02, 2021

Volcanoes in Canada, Eh?

Happy Canada Day/Bonne Fête du Canada! While some past “Volcano Watch” articles have had a July 4th theme for the USA, this year we’re taking the opportunity to ensure readers know that our neighbors to the north have volcanoes, too — including potentially active ones.
Thursday, June 24, 2021

Volcano Watch: Seismic Halfalogues; Earthquakes Only Part of the Conversation

The journey from volcanic repose to a climactic eruption is like a mystery movie that keeps you at the edge of your seat.
Friday, June 18, 2021

New Instrument Measures Lava Lake with Laser

This newly-developed instrument monitors lava lake dynamics with unprecedented resolution.
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