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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Kīlauea East Rift Zone Eruption Map: November 21, 2011...
November 21, 2011

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.

Pu‘u ‘Ō‘ō and Episode 61 flow field: November 21, 2011...
November 21, 2011

Map showing Pu‘u ‘Ō‘ō and the extent of nearby lava flows.

Kīlauea East Rift Zone Eruption Map: November 10, 2011...
November 10, 2011

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.

Pu‘u ‘Ō‘ō and Episode 61 flow field: November 10, 2011...
November 10, 2011

Map showing Pu‘u ‘Ō‘ō and the extent of nearby lava flows.

Pu‘u ‘Ō‘ō and Episode 61 flow field: November 3, 2011...
November 3, 2011

Map showing Pu‘u ‘Ō‘ō and the extent of nearby lava flows.

Kīlauea East Rift Zone Eruption Map: November 3, 2011...
November 3, 2011

Lava flows erupted during Kīlauea's ongoing east rift zone eruption and labeled with the years in which they were active.

Kīlauea East Rift Zone Eruption Map: October 25, 2011...
October 25, 2011

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.

Pu‘u ‘Ō‘ō: October 25, 2011...
October 25, 2011

Map showing Pu‘u ‘Ō‘ō and the extent of nearby lava flows.

Pu‘u ‘Ō‘ō...
September 22, 2011

Map showing the current configuration of Pu‘u ‘Ō‘ō.

Kīlauea East Rift Zone Eruption Map...
September 22, 2011

Map showing the extent of lava flows erupted during Kīlauea's ongoing east rift zone eruption.

Kamoamoa Eruption...
March 9, 2011

Map showing the extent of the active flows of the Kamoamoa eruption, which started on March 5, 2011.

Image: July 2007 Eruption--Quarry flow near-view map: July 27, 2010
February 4, 2011

Map showing a close-up view of flow field expansion over the past few days.

Filter Total Items: 2,120
Color photograph of laser range finder, lava, and rainbow
December 28, 2020

Using a laser ranger finder to measure Kīlauea summit eruption

HVO field crews have been using a laser range finder to measure the vertical distance between points of known elevation and features of the ongoing eruption, such as the lava lake surface level and the erupting vents. This morning, the eruption continues at the west vent in Halema‘uma‘u, and streams of lava about 40 m (131 ft) pour from the vent to the lava lake surface.

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Color photograph of sunrise
December 28, 2020

December 28, 2020, sunrise at Kīlauea's summit

Sunrise at the summit of Kīlauea, within Hawai‘i Volcanoes National Park, on the morning of December 28, 2020. Portions of Crater Rim Drive that down-dropped during Kīlauea's 2018 collapse events, are visible in the lower left. This area remains closed to the public due to hazardous conditions. USGS photo by C. Parcheta. 

December 28, 2020

Overflight of Halema‘uma‘u lava lake and active west vent, 12/28/20

28 December 2020 - Kīlauea Volcano, US Geological Survey Hawaiian Volcano Observatory - A helicopter overflight this morning (9:30 a.m. HST) provided aerial views of the eruption in Halema‘uma‘u. This video shows the lava lake and active west vent. The spatter rampart built by the northern/eastern vent that is no longer erupting is visible on the crater wall. Visual and

Graphic showing digital elevation models and profiles
December 28, 2020

December 26, 2020—Kīlauea summit topographic changes

This graphic depicts the changes to Kīlauea Volcano's summit resulting from the eruption that began on December 20, 2020. Pre-eruption topography of Halema'uma'u crater, collected in 2019, is shown on the left and compared to the topography at the summit on December 26, 2020. The models show that the deepest portion of Halema'uma'u at Kīlauea Volcano's summit has been

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Color photograph of lava lake
December 28, 2020

Kīlauea summit eruption - Dec. 28, 2020 at 6 p.m. HST

The eruption with Halema‘uma‘u continues on the evening of December 28, 2020. This photo shows an HVO scientist making observations of Kīlauea's summit lava lake, with Mauna Loa in the background. HVO scientists have been monitoring the eruption from within an area of Hawai‘i Volcanoes National Park that remains closed to the public for safety reasons. No major changes

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Color photograph of scientist monitoring
December 28, 2020

HVO scientist monitors eruption

HVO scientists use a laser rangefinder to measure the distance to the lava lake surface at Kīlauea's summit. By making measurements from a reference point of known elevation, and because the elevation of the base of Halema‘uma‘u before this eruption began was known, scientists can derive the approximate depth of the lava lake which has grown over the past 8 days. In this

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Color photograph of lava lake
December 27, 2020

KW webcam image taken December 27, 2020, just after 6:30 a.m. HST.

Kīlauea summit KW webam image taken on December 27, 2020, just after 6:30 a.m. HST. The eruption in Halemaʻumaʻu continues and this photo shows that activity remains focused at the west vent as of Dec. 27 morning. You can view live KW webcam images here

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Color photograph of volcanic vent
December 27, 2020

Kīlauea summit eruption - Dec. 27, 2020 at 7:15 a.m. HST

The western vent in Halema‘uma‘u crater wall at Kīlauea summit remains active but field crews monitoring the eruption this morning (December 27) noted that its vigor is somewhat reduced from yesterday. Where three open channels were observed yesterday, there are only two today. Of the three locations that have been erupting at the west fissure vent, the eastern one has

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Color photograph of lava lake
December 27, 2020

Kīlauea summit eruption - Dec. 27, 2020 at 7:15 a.m. HST

HVO field crews were unable to observe early morning eruption activity in Halema‘uma‘u crater at Kīlauea's summit due to high winds. Upon return to the eruption site this morning, HVO field crews noted the reduced vigor at the western vent. The northern/eastern vent remains inactive. At approximately 7:30 a.m. HST today (Dec. 27), HVO field crews measured the lava lake as

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Color contour map
December 27, 2020

December 27, 2020—Kīlauea summit eruption contour map

This map of Halema‘uma‘u at Kīlauea's summit shows 20 m (66 ft) contour lines (black) that mark locations of equal elevation above sea level (asl). The map shows that the lava lake (approximate outline marked in red) has filled 177 m (580 ft) of Halema‘uma‘u since the eruption began at approximately 9:30 p.m. HST on December 20, 2020 (nearly one week ago). The lava lake

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December 27, 2020

Evening views of the eruption in Halema‘uma‘u, 12/27/2020

27 December 2020 - Kīlauea Volcano US Geological Survey Hawaiian Volcano Observatory - Evening views of the eruption in Halema‘uma‘u. The west vent remained active overnight, with strombolian-like bursts and lava cascades. Lava cascading from the vent plunges into the lava lake in multiple places, causing local upwelling. As the cascades enter the lava lake, they cause the

Color map of lava lake temperature
December 26, 2020

December 26, 2020—Kīlauea summit eruption thermal map

A helicopter overflight yesterday (Dec. 26, 2020) at approximately 9:30 AM HST allowed for aerial visual and thermal imagery to be collected of the new eruption within Halema'uma'u crater at the summit of Kīlauea Volcano. This preliminary thermal map shows that the new lava lake is 790 m (864 yd) E-W axis and 520 m (569 yd) in N-S axis. The most recent estimate of lake

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Filter Total Items: 2,298
thumbnail image of cover of Scientific Investigations Report 2018-5140
October 25, 2018

The U.S. Geological Survey assesses active and potentially active volcanoes in the U.S., focusing on history, hazards and the exposure of people, property and infrastructure to harm during an eruption. The findings are in the newly published 2018 Update to the U.S. Geological Survey National Volcanic Threat Assessment.

2018 Volcanic Threat Assessment helps prioritize risk efforts at U.S. volcanoes
October 24, 2018

Since 1980, there have been 120 eruptions and 52 episodes of notable volcanic unrest at 44 U.S. volcanoes.

Kīlauea volcanic ash sample
October 18, 2018

Sulfur dioxide (SO2)-rich emissions have long been a feature of Kīlauea Volcano's summit activity. However, vigorous volcanic ash production during the 2018 eruption raised new concerns about potential impacts for downwind communities.

inferred rupture area
October 11, 2018

On May 4, 2018, a powerful magnitude-6.9 earthquake on the south flank of Kīlauea Volcano shook the Island of Hawai‘i. It was the largest quake in Hawaii in 43 years. Today, more than five months later, smaller-magnitude earthquakes in the same area are still occurring.

USGS
October 9, 2018

Data Release: Volcanic ash leachate and rainwater chemistry from increased 2018 activity of Kīlauea Volcano, Hawaiʻi

Volcano Craters
October 4, 2018

My 37-year stint with the U.S. Geological Survey—16 years at the Cascades Volcano Observatory (CVO) and 21 at the Hawaiian Volcano Observatory (HVO)—ends this month.

a tiltmeter is ready for installation
September 27, 2018

The USGS Hawaiian Volcano Observatory (HVO) uses a diverse set of instruments to monitor active volcanoes in Hawaii. These include seismometers, gas sensors, Global Positioning System (GPS) stations, and webcams. Each provides a unique type of data critical to understanding volcanic systems.

thumbnail image of Preliminary summary of Kīlauea Volcano’s 2018 lower East Rift Zone eruption and summit collapse
September 27, 2018

Overview of Kīlauea Volcano's activity from April 30 through September 22, 2018.

Thinly bedded Kīlauea explosion deposits
September 20, 2018

The limited collapse of the inner part of Kīlauea Volcano's caldera this summer fell well short of the larger summit-wide collapses that occurred in the past. How many such limited collapses can we recognize at Kīlauea before written records were kept? The answer is none.

seismologists install a nodal geophone on Kīlauea's lower East Rift Zone
September 13, 2018

Kīlauea Volcano's 2018 lower East Rift Zone eruption and summit collapse provided a rare opportunity to study dynamic eruptive processes beneath and at the surface of the volcano.

lava is rapidly advancing through communities
September 6, 2018

In 1902, Thomas A. Jaggar, a geologist and founder of the Hawaiian Volcano Observatory (HVO), visited the scene of one of the most deadly volcanic disasters in modern history: Mount Pelee on the Caribbean Island of Martinique.

geophysicist downloads data at a temporary GPS station
August 30, 2018

The USGS Hawaiian Volcano Observatory (HVO) has an extensive network of instruments that helps us monitor how the ground deforms due to magma moving underground. However, we are fortunate that scientific colleagues also pitched in to support our responses to Kīlauea Volcano's lower East Rift Zone (LERZ) eruption and summit collapse.