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.

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Episode 61 (Peace Day) flow field...
October 29, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 (Peace Day) flow field...
October 10, 2012

Map showing the extent of lava flows erupted during Kīlauea's ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 (Peace Day) flow field...
October 4, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 (Peace Day) flow field...
September 25, 2012

Map showing the extent of lava flows erupted during Kīlauea's ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 (Peace Day) flow field
August 8, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 ("Peace Day") flow field
June 29, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 (“Peace Day”) flow field
June 15, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 flow: April 11, 2012...
April 11, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 flow: March 20, 2012...
March 20, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 flow: February 8, 2012...
February 8, 2012

Map showing the extent of lava flows erupted during Kîlauea's ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 flow: January 26, 2012...
January 26, 2012

Map showing the extent of lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

Episode 61 (Peace Day) flow: January 12, 2012...
January 12, 2012

Map showing lava flows erupted during Kīlauea’s ongoing east rift zone eruption and labeled with the years in which they were active.

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Color photograph of volcanic crater lake
November 11, 2020

Kīlauea's summit lake between rain showers

A quick visit to the western caldera rim provided brief views of Kīlauea's summit lake between rain showers. The lake colors were particularly vibrant today, with a deep blue-green color in the western end (bottom of photo), with dark brown near the center. USGS photo by M. Patrick.

October 22, 2020

A virtual walk through Kīlauea Volcano’s summit history: Part 1

Join USGS Hawaiian Volcano Observatory scientist emeritus Don Swanson on a virtual walk, during which you learn about the past 500 years of Kīlauea Volcano’s history as revealed by rocks, craters, and cracks.

October 22, 2020

A virtual walk through Kīlauea Volcano’s summit history: Part 2

Join USGS Hawaiian Volcano Observatory scientist emeritus Don Swanson on a virtual walk, during which you learn about the past 500 years of Kīlauea Volcano’s history as revealed by rocks, craters, and cracks.

View looking southwest along the Southwest Rift Zone of Kīlauea Volcano.
October 22, 2020

Upper Southwest Rift Zone of Kīlauea Volcano—October 22, 2020

View looking southwest along the Southwest Rift Zone of Kīlauea Volcano. The unvegetated nature of the Southwest Rift Zone is on full display with the Keanakākoʻi Tephra in the foreground overlying lava flows from Cone Peak (the cone in the middle ground to the right). In the background are the cones of Puʻukoaʻe (left of center) and the Kamakaiʻa Hills (three hills in 

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Color graphic of geologic map
October 22, 2020

Map of Waiʻōhinu area, Island of Hawaiʻi

Map of Waiʻōhinu area, Island of Hawaiʻi, showing the location of the 3,740 year old age.

October 22, 2020

A virtual walk through Kīlauea Volcano’s summit history: Part 3

Join USGS Hawaiian Volcano Observatory scientist emeritus Don Swanson on a virtual walk, during which you learn about the past 500 years of Kīlauea Volcano’s history as revealed by rocks, craters, and cracks.

October 22, 2020

Emerging tech as STEM platforms in problem-based learning (Kīlauea)

USGS–Hawaiian Volcano Observatory Geophysicist Jefferson Chang talks about technologies that track activity at Hawaiian volcanoes and how crowdsourcing and citizen science can contribute to a greater understanding of hazards, in this presentation to the 2020 SACNAS Advancing Hispanics/Chicanos & Native Americans in Science virtual conference held October 19-24, 2020 (

Color photograph of yellow native sulfur crystals
September 30, 2020

Close-up image of native sulfur crystals

A close-up image of native sulfur crystals that formed within fumaroles at the Sulphur Banks in Hawai‘i Volcanoes National Park. In addition to sulfur species and other gases, volcanoes emit water vapor. Here, some of the vapor has condensed to liquid water and formed droplets visible on the sulfur crystals. USGS photo by P. Nadeau. 

Photograph of tubing inserted into a fumarole
September 30, 2020

Tubing inserted into a fumarole

Tubing inserted into a fumarole at the Sulphur Banks in Hawai‘i Volcanoes National Park allows HVO gas scientists to sample gas. The gas travels through the tube into gas sampling bottles for later analyses. USGS photo by M. Warren.

September 23, 2020

Video of the water lake at Kīlauea's summit

This video, taken on September 23, 2020, shows a small area of bubbling or upwelling along the western shoreline of the water lake at the summit of Kīlauea. This feature may result from a submerged fumarole (gas vent) on the crater wall. The extent of this feature is limited and it does not seem to have a significant effect on the overall lake surface activity. No other

Color photographs of volcanic crater lake
September 23, 2020

Kīlauea's summit water lake comparison - September 23, 2020

HVO geologists made observations of Kīlauea's summit water lake from the east rim of Halema‘uma‘u. This view point is on the large downdropped block that subsided during the 2018 collapse events. From this spot, a view of the entire lake is possible, providing a new perspective on the growth of the lake. The last visit to this spot was on December 18, 2019, when the lake

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Photograph of volcanic crater lake
September 23, 2020

Kīlauea's water lake from the east side - September 23, 2020

This view shows Kīlauea's water lake from the east side of the crater. On September 23, 2020, the western portion of the lake (top of image) was the most varied in color, with patches of greenish and brown water. The majority of the lake surface, however, was the typical tan hue. USGS photo by M. Patrick.

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pockets of natural gas from the burning plant material can ignite
May 24, 2018

Numerous hazards are associated with active lava flows, and USGS Hawaiian Volcano Observatory scientists have written about many of them in past Volcano Watch articles. However, it's been a while since one particular hazard—so-called "methane explosions"—has been addressed.

USGS
May 24, 2018

An explanation of magma movement from Kīlauea's summit through the volcano's East Rift Zone and to the eruption site(s) in lower Puna.

Image: Monitoring Gas Emissions from Kilauea Volcano
May 17, 2018

With ash eruptions occurring from Kilauea’s summit this week, there is a threat of an even larger steam-driven violent explosion. Such an eruption could happen suddenly and send volcanic ash 20,000 feet into the air, threatening communities for miles.

overall vigor of fissure appeared to have dropped from the previous two days
May 17, 2018

False rumors about the ongoing volcanic activity at the summit and lower East Rift Zone of Kīlauea Volcano are causing unnecessary anxiety and confusion. We encourage everyone to check the source of any information you read or hear to be sure that it's factual, accurate, and timely.

USGS
May 14, 2018

Addresses speculative stories, rumors and blogs about the stability of the south flank of Kīlauea and the potential for a catastrophic collapse that could generate a Pacific-wide tsunami.

distribution of ballistics and tephra from the 1924 phreatic explosions
May 11, 2018

Last week's Volcano Watch focused on the East Rift Zone eruption, which continues to impact the lower Puna District on the Island of Hawai‘i. Changes in the eruption are occurring daily, if not hourly, so by the time you read this article, the situation will likely have changed. Nevertheless, here's the status of the eruption as of Friday, May 11 (when this was written):

Screencapture of the International Volcanic Health Hazard Network V...
May 11, 2018

The International Volcanic Health Hazard Network (IVHHN) has a new resource for the current eruptive activity and associated hazards at Kīlauea Volcano's lower East Rift Zone and summit. Find it at https://vog.ivhhn.org

Short-lived explosion at Halema‘uma‘u crater, 8:27 a.m. HST...
May 9, 2018

Short-lived explosion at Halema‘uma‘u crater, 8:27 a.m. HST

USGS
May 9, 2018

The steady lowering of the lava lake in "Overlook crater" within HALEMAUMAU at the summit of KILAUEA Volcano has raised the potential for explosive eruptions in the coming weeks.

Glowing lava flowing down a stream channel with tall rock banks.People watch from the bank tops.
May 8, 2018

Representatives of the news media are invited to join a telephone briefing for the latest updates on Kīlauea's volcanic activity and its impacts.