Unified Interior Regions


The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

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View of a spatter cone
June 15, 2018

Kīlauea Volcano — Spatter Cone Building

Lava fountains from Fissure 8 reach heights of 200 ft overnight. The cinder and spatter cone that is building around

June 15, 2018

Kīlauea Volcano — Halema`uma`u Crater Enlargement

This animated GIF shows a sequence of radar amplitude images that were acquired by the Agenzia Spaziale Italiana CosmoSkyMed satellite system. The images illustrate changes to the 

June 14, 2018

Kīlauea Volcano — Fissure 8 Flow: From Vent to Sea

A helicopter overflight video of the lower East Rift Zone on June 14, 2018, around 6:00 AM, shows lava 

View of a fissure with lava and steam coming out
June 14, 2018

Kīlauea Volcano — Fissure 8 Cone Building

The Fissure 8 viewed from the north at 7:50 AM. The cone is roughly 50 m (165 ft) high at is peak, and a plume of sulfur dioxide and other volcanic gases rises as an orange tinge from the erupting lava fountains (hidden within the cone). Lava is still flowing out of the ventunabated as a full channel. To the left of the cone, a standing wave of lava can be seen in the

Aerial view of laze plumes at ocean entry point
June 14, 2018

Kīlauea Volcano — Laze Plumes

Several laze plumes rise along the ocean entry margin as break outs feed many small and large flows. The largest Pāhoehoe breakout area is on the northern margin of the flow.

Aerial of lava breakouts along ocean entry.
June 14, 2018

Kīlauea Volcano — Pāhoehoe Breakouts

A close up view of the pāhoehoe breakouts along the northern ocean entry.

June 14, 2018

USGS Status Update of Kīlauea Volcano - June 14, 2018

USGS Hawaiian Volcan Observatory, Status of Kīlauea Volcano, June 14, 2018, Jessica Ball, USGS Volcanologist.

Crater with small gases rising
June 13, 2018

Halema`uma`u Crater - June 13, 2018

Halema`uma`u Crater - June 13, 2018

June 13, 2018

USGS Status Update of Kīlauea Volcano - June 13, 2018

USGS Hawaiian Volcano Observatory, Status of Kīlauea Volcano

June 13, 2018, Jessica Ball, USGS Volcanologist

Kīlauea lower East Rift Zone lava flows and fissures, June 13, 10:0...
June 13, 2018

Kīlauea LERZ lava flows and fissures, June 13, 10:00 a.m.

Map as of 10:00 a.m. HST, June 13, 2018. Given the dynamic nature of Kīlauea's lower East Rift Zone eruption, with changing vent locations, fissures starting and stopping, and varying rates of lava effusion, map details shown here are accurate as of the date/time noted. Shaded purple areas indicate lava flows erupted in 1840, 1955, 1960, and 2014-2015.

Aerial of lava entering ocean
June 13, 2018

Kīlauea Volcano — Ocean Entry

View of the ocean entry and the resulting laze plume where 

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Recent collapses at the Kamokuna ocean entry underscore on-going ha...
March 9, 2017

On December 31, 2016, almost the entire 23 acre lava delta and 4 acres of the older sea cliff slid into the ocean piece by piece over the course of the afternoon and into the evening. 

Pulsing magma supply detected at Kīlauea...
March 2, 2017

This is the story of how a new concept—slowly pulsing magma supply to Kīlauea—emerged from observations of the Overlook lava lake in Halema‘uma‘u.

Sluggish breakout on Kīlauea Volcano's coastal plain remains active...
March 2, 2017

Sluggish breakout on Kīlauea Volcano's coastal plain remains active

Remotely measuring the temperature of Kīlauea lava...
February 23, 2017

In early December 2016, scientists from the U.S. Geological Survey and NASA visited Kīlauea Volcano to experiment with a portable, ground-based camera system for use as an optical imaging pyrometer.

61g coastal lava flow remains active...
February 22, 2017

61g coastal lava flow remains active

NASA practices for Mars exploration on Kīlauea Volcano...
February 16, 2017

A simulated Mars landing mission unfolded on Kīlauea Volcano for two weeks in September 2016.

An FTIR instrument is set up on the rim of Halema‘uma‘u Crater to m...
February 14, 2017

A Valentine's Day view of Kīlauea Volcano's summit lava lake

High-flying NASA aircraft instruments simulate future satellite ima...
February 9, 2017

From late January through February, 2017, NASA is conducting this high-altitude airborne remote sensing data collection campaign over the State of Hawaii. Several NASA-funded, multi-year projects will use these data to study coral reefs and volcanic processes.

Photo of the upper portion of the "firehose" taken with a telephoto...
February 8, 2017

"Firehose flow" visible from public lava viewing area

Kīlauea is home to America's first volcano observatory...
February 2, 2017

A brief history of America's first volcano observatory—the Hawaiian Volcano Observatory (HVO).

The entire section of the sea cliff that was seaward of the hot cra...
February 1, 2017

Crack above Kīlauea's ocean entry has widened, increasing instability of sea cliff

At Kīlauea's ocean entry on Jan. 28 and 29, the interaction of molt...
January 30, 2017

Ground crack at Kīlauea ocean entry is cause for concern