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 of Flow Field...
February 23, 2018

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

Why are HVO scientists talking so much about Mauna Loa?...
February 15, 2018

Mauna Loa, Earth's largest active volcano, has erupted 33 times since 1843, producing the lava flows shown in black. 

Map of Flow Field...
February 1, 2018

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

25 years since last Mauna Loa eruption...
January 24, 2018

26 years since last Mauna Loa eruption

Mauna Loa poses most serious threat to South Kona...
January 24, 2018

Mauna Loa poses most serious threat to South Kona

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 post-1823 lava flows erupted from Mauna Loa (gray) and numbe...
January 1, 2018

Slope map of Mauna Loa, including lava flows erupted since 1823 (gray), showing the approximate number of hours or days it took for a flow to advance from the vent location to the ocean or maximum reach of a flow. 

Color graphic showing the Island of Hawaiʻi and Mauna Loa structural features
January 1, 2018

Island of Hawai‘i map, showing Mauna Loa and the other four volcanoes that make up the island. Mauna Loa structural features include summit caldera, rift zones, radial vents, and historical lava flows.

Map of lava flows that have erupted on Mauna Loa Volcano from 1843-...
January 1, 2018

Map of lava flows that have erupted on Mauna Loa Volcano from 1843-1984.

Earthquakes at Mauna Loa from June 2013 to June 2015. Green circles...
January 1, 2018

Earthquakes at Mauna Loa from June 2013 to June 2015. Green circles are 0-5 km (0-3 mi) deep and similar to ones prior to 1975 and 1984 eruptions, but cluster of 5-10 km (3-6 mi) deep quakes missing.

USGS maps identify lava inundation zones for Mauna Loa...
January 1, 2018

Close up of Sheet 2 of "Lava inundation zone maps for Mauna Loa, Island of Hawai‘i," recently published by the U.S. Geological Survey. Colors depict lava Inundation zones for the Kaumana, Waiākea, and Volcano-Mountain View regions on Mauna Loa. 

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Color photograph of lava lake
January 9, 2021

Dusk view of Halema‘uma‘u lava lake, Saturday, January 9, 2021

Around sunset on Saturday (January 9, 2021), a break in the rain allowed HVO scientists to visit and monitor the ongoing eruption in Halema‘uma‘u. The west vent is still actively effusing lava, but outflow into the lava lake is increasingly sluggish, as evidenced by slow-moving crustal plates near the once-vigorous vent outlet. Also, much of the crust in the eastern half

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Color photograph of lava lake
January 9, 2021

Evening view of Halema‘uma‘u lava lake, Saturday, January 9, 2021

The arrival of nightfall at Halema‘uma‘u on January 9, 2021, provided a clearer view of ongoing eruptive activity for USGS scientists monitoring the eruption this Saturday evening. This photo is focused on areas of active crustal motion in the western half of the lava lake; the eastern half (off to the right) is mostly stagnated and displays significantly less

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Color photograph of lava lake
January 8, 2021

Halema‘uma‘u just after sunset on January 8, 2021

Kīlauea’s summit lava lake, in Halema‘uma‘u, just after sunset on January 8, 2021. This view is to the north, from the south rim of the crater.  HVO scientists continue to monitor the eruption within an area of Hawai‘i Volcanoes National Park that remains closed to the public for safety reasons. USGS image by N. Deligne. 

January 8, 2021

Halema‘uma‘u West Fissure Activity (Jan 8, 2021)

This video shows activity at the western fissure, in Halema‘uma‘u at the summit of Kīlauea on January 8, 2021. The lava stream entering the lake appeared weaker than several days ago, when a dome fountain was active.
 

January 8, 2021

Crustal Overturning in Halema‘uma‘u Lava Lake

This video shows crustal foundering and resurfacing at the lava lake in Halema‘uma‘u, at the summit of Kīlauea on January 8, 2021. Recently this foundering process has been common in the eastern portion of the lake. The video is shown at 20x speed.

Animated GIF showing lava front moving quickly.
January 8, 2021

Crustal Overturning (4x speed of original video)

This animated GIF was created from a clip within the original video showing crustal overturning at Kīlauea Volcano in Hawaii. The original video was at 20x the speed of the event, and this animation 4x faster. 

Animated GIF showing lava front moving quickly.
January 8, 2021

Crustal Overturning (4x speed of original video)

This animated GIF was created from a clip within the original video showing crustal overturning at Kīlauea Volcano in Hawaii. The original video was at 20x the speed of the event, and this animation 4x faster. 

Color photograph of lava lake
January 7, 2021

Kīlauea summit aerial imagery - January 7, 2021

During an overflight of Kīlauea summit today (January 7, 2021) at approximately 10:30 a.m. HST, HVO geologists captured this image of the growing lava lake within Halemaʻumaʻu. Sunny weather allowed for clear views of Mauna Loa, to the west. USGS photo by M. Patrick. 

Color photograph of lava lake, vents, and island
January 7, 2021

Kīlauea summit aerial imagery - January 7, 2021

Aerial image of the active west vent area and the largest island in Halemaʻumaʻu's growing lava lake. During the overflight of Kīlauea's summit today (January 7, 2021) at approximately 10:30 a.m. HST, HVO geologists noted that the dome fountain, which had been persistent near the base of the west vent area, had subsided and was no longer present. USGS photo by K. Mulliken

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Color photograph of lava lake margin
January 7, 2021

Kīlauea summit aerial imagery - January 7, 2021

This photo, taken during an overflight of Kīlauea's summit this morning (January 7, 2021), shows the southeast margin of Halemaʻumaʻu's growing lava lake. The photo shows the boundary between the active portion of the lava lake (left) and the subtle levee around the lake perimeter that allows the lake to be slightly perched. The photo shows that a margin around the lake (

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January 7, 2021

3D Model of Halema'uma'u Crater (Jan 7, 2021)

Visual photographs taken during a helicopter overflight of Halema'uma'u crater on January 7, 2021 (at Kīlauea Volcano) are used to create a 3D model of the crater. This technique is called structure-from-motion photogrammetry and uses the multiple perspectives captured in dozens of photos to reconstruct the crater shape on a computer. USGS Hawaiian Volcano Observatory

Color image of lava lake temperature
January 7, 2021

Thermal image of the lava lake at the summit of Kīlauea - Jan. 7, 2021

This thermal image, looking northwest, shows the distribution of activity on the lava lake at Kīlauea's summit. The lake is slightly perched and surrounded along its perimeter by a lower ledge of cooler lava. The western fissure, in the wall of Halema‘uma‘u crater, is visible in the upper left portion of the image, just above the lake. Today, the eastern end of the lake (

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Screen shot of a USGS geonarrative showing Kilauea
September 19, 2019

A new USGS geonarrative provides a brief overview of recent Kīlauea eruptions, highlighting the circumstances leading up to and summarizing the 2018 events.

image related to volcanoes. See description
September 17, 2019

Stable temperatures at Halema‘uma‘u water pond

image related to volcanoes. See description
September 14, 2019

Halema‘uma‘u water pond on September 14

image related to volcanoes. See description
September 10, 2019

Halema‘uma‘u water pond on September 10

Halema‘uma‘u water pond—animated image file
September 9, 2019

Animated, comparison, and video imagery of the Halema‘uma‘u water pond.

view looking north across Mauna Loa's summit caldera
September 9, 2019

An early morning view looking north across Moku‘āweoweo, Mauna Loa's summit caldera, from a spot near the summit cabin on the volcano's south caldera rim.

The Hilina Pali on Kīlauea Volcano's south flank
August 29, 2019

The pali (cliffs) of Kīlauea's south flank are some of the volcano's most striking features. Reaching up to 500 m (1500 ft) high, they stand out against the otherwise gentle slopes of Hawai‘i's most active shield volcano.

pond of water in Halema‘uma‘ crater
August 26, 2019

On July 25, 2019, a helicopter pilot flying a U.S.Geological Survey mission over Kīlauea noticed an unusual green patch at the bottom of Halema‘uma‘u, the crater at the summit of the volcano.

False-Color Landsat 8 Operational Land Imager
August 22, 2019

Last month, the entire world celebrated the 50th anniversary of Apollo 11's triumphant flight to the moon and the first human footsteps on the surface of another planetary body on July 20, 1969. 

pond of water in Halema‘uma‘ crater
August 21, 2019

HVO geophysicist Jim Kauahikaua discusses the water pond in Halema‘uma‘u and what it means.

National Historical Park south of Kona on the big island of Hawaii
August 15, 2019

In the land of Kamehameha, south of Kona on the big island of Hawaii, a sacred landscape called Puʻuhonua O Hōnaunau faces the uncertainty of the rising seas.

The bones of royal chiefs rest there. Stories of how ancient Hawaiian lawbreakers flocked to this place of refuge still resonate throughout the 180-acre national historic park that surrounds Hōnaunau Bay.