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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Small-scale map of flow field...
February 19, 2015

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

Large-scale map of flow field...
February 19, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Thermal overlay of distal part of flow field...
February 19, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lava flow on February 19 at about 10:30 AM. 

Map of distal part of flow field...
February 19, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow. 

Satellite image of area around front of Kīlauea's East Rift Zone la...
February 14, 2015

This satellite image was captured on Saturday, February 14, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite.

Thermal overlay of distal part of flow field...
February 10, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lav£a flow on February 10 at about 12:30 PM. 

Small-scale map of Kīlauea's East Rift Zone lava flow...
February 10, 2015

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

Large-scale map of Kīlauea's East Rift Zone lava flow...
February 10, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Satellite image of area around front of Kīlauea's East Rift Zone la...
February 10, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow

Small-scale map of Kīlauea's East Rift Zone lava flow...
February 5, 2015

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

Large-scale map of Kīlauea's East Rift Zone lava flow...
February 5, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Satellite image of area around front of Kīlauea's East Rift Zone la...
February 5, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow.

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Color photograph of scientist measuring lava lake
January 6, 2021

HVO geologist measures lava lake features with a laser rangefinder

An HVO geologist takes Kīlauea summit eruption lake-level, spatter-cone, and dome-fountain measurements with a laser rangefinder. The top of the dome fountain in Halemaʻumaʻu was up to 5 meters (16 ft) above the lake surface. The lake elevation suggests a maximum lava lake depth of approximately 193 m (211 yd). HVO scientists monitor the ongoing Kīlauea summit eruption

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Color photograph of lava lake
January 6, 2021

Rainbow over the western fissure erupting in Halemaʻumaʻu crater

View to the north-northwest from the south rim of Halemaʻumaʻu crater and showing the activity at the western fissure, partly obscured by a rainbow. Today, the western fissure was erupting periodic small spatter bursts from the southwest vent of the fissure that is incandescent in this image and nearly as tall as the previously active cone to the right (northeast). Today,

...
January 5, 2021

Kīlauea — Halema‘uma‘u West Vent Activity (Jan 5, 2021)

The activity at the Halema‘uma‘u west vent area on January 5, 2021, was dynamic. In the foreground, a “dome fountain” upwells from beneath the lake surface, pulsing with a bubble-like geometry. Just behind it, an effusive lava flow emerges from the base of the vent structure. A mid-elevation vent is also active, emitting another effusive lava flow. Finally, the higher

Color map of topography
January 5, 2021

January 5, 2021—Kīlauea summit topographic changes

Topography of Halema'uma'u crater, at the summit of Kīlauea Volcano, on December 26, 2020 (left), and January 5, 2021 (right). These Digital Elevation Models (DEMs) are created from aerial imagery collected during helicopter overflights. They show that the lava lake within Halema'uma'u continues to rise and deepen. Eruptive vents are evident on the wall of Halema'uma'u,

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Color photograph of volcanic vent
January 5, 2021

Kīlauea west vent “dome fountain” activity for 5 January, 2021

View through the laser rangefinder from the south rim of Halema‘uma‘u, Kīlauea Volcano summit, and showing the “dome fountain” and west vent effusive lava flow around 3:30 p.m. HST on January 5, 2021. A glowing vent is also visible at the top of the spatter structure. USGS photo by K. Lynn.

Color photograph of lava lake
January 5, 2021

Halema‘uma‘u lava lake on the evening of 5 January, 2021

View looking north across Kīlauea caldera from the south rim of Halema‘uma‘u, showing the ongoing eruption around 5:30 p.m. HST on January 5, 2021. The west vent activity included the “dome fountain,” effusive lava flows from a mid-elevation vent, and weak strombolian spattering activity from the high-elevation vent. USGS photo by K. Lynn. 

Color photograph of volcanic vent
January 5, 2021

Halema‘uma‘u west vent activity for the evening of 5 January, 2021

Telephoto view of the lava flow and “dome fountain” activity at the west vent of the ongoing eruption in Halema‘uma‘u, Kīlauea Volcano summit, at 5:45 p.m. HST on 5 January, 2021. USGS photo by K. Lynn. 

January 4, 2021

Image of the Week - Fires Tear Through Former Cane Fields

The waves of sugar cane that once defined the Hawaiian island landscape of Maui, have slowly given way to non-native annual grasses in recent decades. Those grasses have become a fire hazard along the way.

The closure of central Maui's last large cane mill in 2016 opened up some 36,000 acres for new growth. Some of those acres burned in 2019 during one of the island

Color photograph of volcanic vent spattering
January 3, 2021

Kīlauea summit eruption - Jan. 3, 2020, at 1:30 a.m. HST

Early this morning, the west vents in Halema‘uma‘u spattered from two places at the top of a small cone plastered on the northwest wall. This process can be seen in Kīlauea Volcano's summit F1 thermal webcam view of the lava lake. USGS photo by H.

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Color photograph of volcanic vent spattering and lava lake
January 3, 2021

Kīlauea summit eruption - Jan. 3, 2020, at 1:30 a.m. HST

At Halema‘uma‘u, the west vents (visible in the foreground of this photo as two glowing holes on a cone-shaped feature) erupt occaisional spatter. Lava is also emerging in a small dome fountain above the lake crust in front of the west vents, probably from a submerged portion of the vent (visible in the background of this photo as a bright spot with lava crust boundaries

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January 3, 2021

Dome Fountain Formed at Lava Lake Inlet, Halema'uma'u (Jan 2-3, 2020)

Lava forms a “dome fountain” at the inlet to the lava lake in Halema'uma'u crater January 2-3, 2021. Lava from the western vent cascades beneath roofed vertical channels to enter the lava lake at an inlet that has become partially submerged. The result is a rolling upwelling of lava near the inlet called a “dome fountain.”

Dome fountains have been observed during

Color photographs of lava lake
January 3, 2021

Channel crusting over at the base Halema'uma'u's west vent

The west vent in Halema‘uma‘u crater continues to erupt at Kīlauea’s summit. These telephoto images from December 29 (left) and December 30 (right) compare the lava lake surface below the west vent. The west vent is supplying lava to the lake through a crusted over channel, which was starting to form by December 30. USGS photos by H. Dietterich.

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Ash rises above Halema‘uma‘u within Kīlauea's summit caldera
May 9, 2019

A year ago, USGS Hawaiian Volcano Observatory scientists and Island of Hawai‘i residents were in the throes of an historically unprecedented series of events for Kīlauea.

11:47 a.m. HST. Scientist measures the surface temperature of a cra...
May 8, 2019

The team at the U.S. Geological Survey Hawaiian Volcano Observatory is one of several finalists nominated for the 2019 Service to America Medals.

A long skinny core section of mud with a sandy layer in the middle of it lays on the marsh grass near where the core was taken.
May 3, 2019

In a comprehensive survey of Hawaiian tsunami deposits, USGS scientists from the USGS Pacific Coastal and Marine Science Center and collaborators found evidence for a widespread tsunami striking the islands between 1250 and 1450 CE.

field crews of Hawaiian Volcano Observatory
May 2, 2019

With the one-year anniversary of the onset of Kīlauea Volcano's 2018 lower East Rift Zone eruption upon us, USGS Hawaiian Volcano Observatory (HVO) staff, like many Hawai‘i residents, are reflecting on this historic event. 

Preview image of timelapse sequence at Mauna Loa's summit
April 29, 2019

This timelapse sequence of webcam images over a 24-hour period shows a typical day at the summit of Mauna Loa. 

USGS
April 27, 2019

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST.

fissures were characterized by low eruption rates
April 25, 2019

May 3, 2019, marks the one-year anniversary of the start of Kīlauea Volcano's 2018 lower East Rift Zone eruption. Over the past year, USGS Hawaiian Volcano Observatory (HVO) geologists and collaborators have been closely studying the vast amount of data collected during the summer eruption. Now is a good time to explore what's been learned, and what's still unfolding.

progression of the magmatic intrusion from Kīlauea
April 18, 2019

When a major geologic event occurs, scientists who study such events and the people who are directly or indirectly impacted by it seek to understand its cause. Often, a first step toward that understanding is to rule out what did not cause the event. 

USGS
April 16, 2019

Details about two upcoming talks presented by HVO scientists on April 23 and May 2 are posted.
 

This is a photo of one of the large fissures in the Southwest Rift Zone.
April 13, 2019

Magnitude-5.3 earthquake east of Kalaoa, Island of Hawai‘i

HVO scientists measure a GPS instrument
April 12, 2019

HVO scientists inspect monitoring instruments on Mauna Loa.