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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Map showing flow field changes...
September 30, 2015

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

Small-scale map of flow field...
September 30, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to the eastern part of the Island of Hawai‘i.

Large-scale map with thermal mosaic overlay...
September 11, 2015

This map overlays a georeferenced thermal image mosaic onto a map of the flow field to show the distribution of active and recently active breakouts.

Small-scale map of flow field...
September 11, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to the eastern part of the Island of Hawai‘i. 

Satellite image shows June 27th lava flow...
September 2, 2015

This satellite image was captured on Wednesday, September 2, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite.

Map showing flow field changes...
August 26, 2015

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

Map showing flow field changes...
August 5, 2015

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

Small-scale map of flow field...
August 5, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to the eastern part of the Island of Hawai‘i. 

Map with thermal mosaic overlay...
July 23, 2015

This map overlays a georeferenced thermal image mosaic onto the flow field change map to show the distribution of active and recently active breakouts. 

Map showing flow field changes...
July 23, 2015

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

Small-scale map of flow field...
July 7, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. 

Map showing flow field changes...
July 7, 2015

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

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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 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 photograph of vent
December 26, 2020

Kīlauea summit west vent - Dec. 26, 2020 at 5:15 a.m. HST

As of about 2:40 a.m. HST on December 26, 2020, activity at the west vent in Halema‘uma‘u crater wall at Kīlauea's summit has increased. This photo, taken at approximately 5:15 a.m. HST shows fountaining at the west vent, and lava pouring from the north end of the fissure into the growing lava lake. HVO field crews monitoring the activity overnight measured the west vent

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December 26, 2020

Overflight of Kīlauea's summit Lava Lake and Fissure

A helicopter overflight on December 26, 2020, provided aerial views of the eruption in Halema‘uma‘u. This video, which is sped up 3 times, shows the lava lake and active west vent that rejuvenated just before 3 a.m. HST today. Visual and thermal imagery collected during the overflight are used to map the ongoing activity.

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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Color photograph of lava lake
December 26, 2020

Kīlauea summit eruption - Dec. 26, 2020 at 5:15 a.m. HST

The eruption continues in Halema‘uma‘u crater at Kīlauea's summit. HVO field crews observing the activity overnight noted that at approximately 2:40 a.m. HST December 26, 2020, activity at west vent in the wall of Halema‘uma‘u rejuvenated: the west vent has became more active than the northern vent. Since the start of the eruption on December 20 at 9:30 p.m. HST, the

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Filter Total Items: 2,209
New outcrops make good geology
March 28, 2019

A good field geologist is an opportunist. Never content with what outcrops are available, she jumps at the chance to see another one, hoping that it will provide a better understanding to some question about what happened in the past.

USGS
March 27, 2019

On March 26, 2019, in response to reduced activity on the volcano, HVO lowered the Volcano Alert Level for Kīlauea's ground-based hazards from ADVISORY to NORMAL.

USGS
March 26, 2019

Kīlauea's Southwest Rift Zone was more volcanically active in the late 18th- to early 19th-centurys than previously assumed.

UAS mission documents conditions at the Overlook vent...
March 26, 2019

The 2018 Kīlauea Volcano lower East Rift Zone eruption was the first time Unmanned Aircraft Systems (UAS) were used by the Federal Government to assist with an eruption response in the U.S. The UAS (drones) surveyed areas that were too hazardous for field crews or manned aircraft to access, collected multiple types of data, and provided 24/7 real-time situational awareness.

Explosive eruption columns of ash rising
March 22, 2019

In February 1924, the surface of the lava lake at Halema‘uma‘u dropped rapidly and disappeared from view. Throughout March and April, the crater floor subsided as magma moved out of the summit reservoir into the East Rift Zone. By May 6, 1924, the floor of Halema‘uma‘u had dropped more than 180 m (about 600 ft) below the crater rim. 

Map of selected earthquakes beneath a portion of southeast Hawaii
March 15, 2019

Early Wednesday morning, just before 1AM on March 13, houses in east Hawai`i began to shake. Without a doubt, it was an earthquake. To those who endured the near-daily shaking from last summer’s collapse events at Kīlauea’s summit, this week’s earthquake was clearly different.

USGS
March 13, 2019

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-5.5 earthquake located beneath Kīlauea Volcano's south flank on Wednesday, March 13, at 12:55 a.m., HST. 

Lava flow thickness 2018
March 7, 2019

Eruption rate (how much lava comes out of the ground per unit time) is probably the best measure of volcanic activity, and the first step in that calculation is to measure lava flow thickness and area. 

fissure 8 on Kīlauea
February 28, 2019

Since the end of the 2018 lower East Rift Zone (LERZ) eruption on Kīlauea Volcano, questions have surfaced concerning how long it will take for the new lava flows to solidify. This is a difficult question to answer, because the initial eruptive temperatures along with many different factors can influence the rate of cooling.

USGS
February 22, 2019

2018 Kīlauea lower East Rift Zone eruption and calderal collapse described in Science paper.

USGS
February 22, 2019

USGS Fact Sheet, written by HVO scientists, won the 2018 Shoemaker Award for Communications Product Excellence for the Small Print category.