Unified Interior Regions

Hawaii

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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Thermal map of flow field...
January 5, 2018

This map shows a thermal map over the Episode 61g lava flow.

Map of Flow Field...
January 5, 2018

Recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of Flow Field...
December 13, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. 

Thermal map of flow field...
December 12, 2017

Thermal map over the Episode 61g lava flow. 

Pu‘u ‘Ō‘ō Crater annotated map...
November 29, 2017

This map shows Pu‘u ‘Ō‘ō Crater on Kīlauea Volcano's East Rift Zone on November 22, with labels of the crater's main features.

Thermal map of flow field...
November 22, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
November 22, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of flow field...
November 1, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.

Thermal map of flow field...
October 12, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
October 12, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. 

Thermal map of flow field...
September 21, 2017

Thermal map over the Episode 61g lava flow. 

Map of flow field...
September 21, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.

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September 4, 2018

Kīlauea lower East Rift Zone

On September 4-7, the Unmanned Aircraft Systems team flew several missions documenting changes within fissure 8 on Kīlauea's lower East Rift Zone. On September 4, lava erupted on the crater floor within the vent, building a small cone on the floor and creating a flow that did not extend beyond the vent walls. On September 5, gas bursts briefly lifted the crust over a small

September 4, 2018

Kīlauea Lower East Rift Zone

An Unmanned Aircraft Systems overflight yesterday (September 4, 2018) showed a small cone on the floor of the crater within fissure 8. The cone formed as lava erupted from an opening on the surface of the flow that covers the crater floor.

September 3, 2018

Low-Level Spatter on New Pad of Lava

During an overflight of fissure 8 this morning, HVO geologists observed low-level spattering on the new pad of lava within the cone. Slow-moving lava had just barely entered the spillway, but was not advancing down the channel.

August 31, 2018

Time Series of Kīlauea Volcano's Lower East Rift Zone Lava-Flow Maps

During Kīlauea Volcano's lower East Rift Zone (LERZ) eruption, lava-flow maps were generated on a near-daily basis and published on the Hawaiian Volcano Observatory webpage. For the first week of the 2018 LERZ eruption, lava flows proved difficult to map, as they stayed close to the fissures in Leilani Estates, where vegetation obscured aerial views of their margins. Later

August 30, 2018

Kīlauea Volcano's summit

The Unmanned Aircraft Systems (UAS) team circumnavigates the crater rim at the summit of Kīlauea Volcano, collecting data for digital elevation models that document summit changes. The volume change, from early May 2018 to present, is over 825 million cubic meters (1 billion cubic yards). The vertical collapse of the crater floor is more than 500 m (1600 ft). Limited UAS

August 30, 2018

Kīlauea Volcano's Summit

The Unmanned Aircraft Systems (UAS) team circumnavigates the crater rim at the summit of Kīlauea Volcano, collecting data for digital elevation models that document summit changes. The volume change, from early May 2018 to present, is over 825 million cubic meters (1 billion cubic yards). The vertical collapse of the crater floor is more than 500 m (1600 ft). Limited UAS

August 30, 2018

PubTalk 8/2018 — What on Earth is going on at Kilauea Volcano?

Title: What on Earth is going on at Kilauea Volcano?

  • First significant summit explosions in nearly a century
  • Largest summit collapse volume since at least 1800
  • Voluminous fissure eruptions feeding channelized lava flow
  • Unparalleled new opportunities for understanding the volcanic system
Before and after views of a water fall.  First shows light flow of water over the falls, the second shows heavy flow.
August 23, 2018

Impact of Hurricane Lane on Wailuku River

Two views from the Rainbow Falls overlook, downstream of the Wailuku River streamgage near Hilo, Hawaii. The image on the left shows a typical base flow of about 35 cubic feet per second (cfs). The image on the right shows the early impact of Hurricane Lane with a flow of about 26,000 cfs taken at 8:35 a.m. HST, August 23, 2018. This U.S. Geological Survey streamgage has

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August 21, 2018

Kīlauea Volcano's Lower East Rift Zone

An Unmanned Aircraft Systems overflight of fissure 8 on August 21, 2018, showed no incandescence within the cinder cone. Minor amounts of gases, primarily steam, rose from the north wall of the cinder cone and from areas along the lower East Rift Zone. The interior walls of the fissure 8 cone and lava channel are slumping downward and inward. The cinder cone was about 50 m

August 20, 2018

Changes Over Time at Kīlauea (April - August 2018)

Changes at the summit of Kīlauea between April 14 and August 20, 2018, were captured by a USGS–Hawaiian Volcano Observatory camera. This time-lapse series includes roughly one image per day. The lava lake within Halema‘uma‘u is visible in April, with overflows onto the caldera floor on April 23. The lava lake drains in early May, followed by explosive activity over the

Color photograph of caldera
August 18, 2018

Kīlauea summit

At Kīlauea's summit today, a clear morning gave way to heavy rain, which re-mobilized the ash cover between HVO and the Southwest Rift Zone, concentrating the ash in washes.

color photograph of summit of volcano
August 17, 2018

Kīlauea summit

Kīlauea Volcano’s summit, seen here from the northeast rim of the caldera, has remained quiet, with no collapse events since August 2. It remains too soon to tell if this diminished activity represents a temporary lull or the end of summit collapses. HVO continues to record detailed

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active lava channel on Kīlauea Volcano's lower East Rift Zone
August 2, 2018

"How long will it last?" is one of the most challenging questions asked about a volcanic eruption, including Kīlauea Volcano's current lower East Rift Zone (LERZ) eruption.

Changes at Halemaumau over time...
July 31, 2018

We've compiled some Frequently Asked Questions that address the reasons behind the current activity summit activity and what might happen over the next several months.

lava temperatures were about 2000 degrees Fahrenheit
July 27, 2018

"What's happening inside the volcano?" is just one of many questions asked about Kīlauea's ongoing lower East Rift Zone eruption. Looking at the geochemistry of erupted lava can help us answer these questions.