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...
April 9, 2015

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

Map show flow field with thermal overlays...
April 3, 2015

This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of the three areas of breakouts near Pu‘u ‘Ō‘ō on April 3.

Map showing flow field changes...
April 3, 2015

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

Map showing flow field changes...
April 1, 2015

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

Map showing flow field changes...
March 24, 2015

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

Map of proximal flow field with thermal overlays...
March 17, 2015

This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of the three areas of breakouts near Pu‘u ‘Ō‘ō on March 17 at about 8:00 AM.

Small-scale map of flow field...
March 10, 2015

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

Map of proximal flow field with thermal overlays...
March 10, 2015

This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow near Pu‘u ‘Ō‘ō on March 10 at about 10:25 AM.

Map of flow field west of Kaohe Homesteads with thermal overlay...
March 10, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow west of Kaohe Homesteads on March 10 at about 10:30 AM. 

Map of distal flow field with thermal overlay...
March 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 lava flow on March 10 at about 10:35 AM.

Map of distal flow field...
March 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. 

Satellite image of area around front of Kīlauea's East Rift Zone la...
March 3, 2015

This satellite image was captured on Tuesday, March 3, 2015 by the Landsat 8 satellite. 

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Color photo of lava lake
December 23, 2020

Kīlauea summit eruption - December 23, 2020

Scientists continue to monitor the ongoing eruption in Kīlauea Volcano's summit caldera, Island of Hawai‘i. This photo, from the south rim of Halema‘uma‘u crater and looking north, shows the volcanic gas plume heading west. USGS photo by M. Patrick. 

Color photograph of scientists monitoring lava lake
December 23, 2020

Monitoring Kīlauea's new summit lava lake

A helicopter overflight yesterday (Dec. 22, 2020) at approximately ~11:30 AM HST allowed for aerial visual and thermal imagery to be collected, which was used to map the area of Kīlauea's growing summit lava lake in Halema‘uma‘u crater. As of yesterday afternoon, the lake is over 690 m (yd) E-W axis and 410 m (yd) in N-S axis. The lake area is more than 22 

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Color photograph of eruption plume
December 22, 2020

Kīlauea summit Volcano's eruption within Halema‘uma‘u crater

Aerial imagery collected during a USGS Hawaiian Volcano Observatory overflight at approximately 11:35 a.m. HST. The plume from the ongoing eruption rises above the Kīlauea Volcano's summit, within Hawai‘i Volcanoes National Park. Ha‘akulamanu (Sulphur Banks) is visible in the foreground. USGS photo. 

Color photograph of fissure
December 22, 2020

Halema‘uma‘u crater fissure

Aerial imagery collected during a USGS Hawaiian Volcano Observatory overflight at approximately 11:35 a.m. HST. This photo shows the western, weaker of the two active fissures in Kīlauea Volcano's ongoing summit eruption in Halema‘uma‘u crater. USGS photo. 

Color photograph of eruption
December 22, 2020

Kīlauea Volcano's summit eruption within Halema‘uma‘u crater

Aerial imagery collected during a USGS Hawaiian Volcano Observatory overflight at approximately 11:35 a.m. HST. This photo shows the two active fissures in Kīlauea Volcano's ongoing summit eruption in Halema‘uma‘u crater. These fissures in the wall of Halema‘uma‘u crater feed a growing lake at its base. In the center of the lake, an island rises approximately 17 m (55 ft) 

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Map of volcano summit activity
December 22, 2020

December 21, 2020—Kīlauea summit eruption reference map

The recent eruption at Kīlauea Volcano's summit, within Halema‘uma‘u crater, has generated a lava lake that is being fed by two fissures. Halema‘uma‘u crater has previously been occupied by a water lake (July 2019 to December 2020) and a lava lake (2008 to 2018). The current lava lake is larger than both previous lakes; though it occupies a similar (but larger) location of

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Color photograph of scientist in field
December 22, 2020

HVO scientist checks monitoring equipment

The current eruption is confined to Halemaʻumaʻu crater within Hawai'i Volcanoes National Park but data from tiltmeters and Global Positioning System (GPS) stations show contraction in the upper portion of the East Rift Zone (an area between Kīlauea’s summit and Pu‘u ‘Ō‘ō). Similar instruments in down-rift areas, including the site of the 2018 eruption, are stable and do

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Color thermal images of lava lake
December 22, 2020

Kīlauea summit eruption thermal image comparison

This comparison shows thermal images taken yesterday and today during USGS Hawaiian Volcano Observatory helicopter overflights. The main difference in this 24 hour period is the significant rise and infilling of the lava lake within Halema‘uma‘u crater at Kīlauea summit. This morning, the lake depth was measured at approximately 130 yards. USGS images by M. Patrick. 

Color thermal images of lava lake
December 22, 2020

USGS webcam--F1cam

A comparison of two thermal images from the F1cam thermal webcam located on the rim of Halema‘uma‘u crater, at the summit of Kīlauea volcano. These two images were taken 48 hours apart. The left image from December 20 at 8:22 a.m. HST, shows the water lake that was in the bottom of the crater—approximately 13 hours before the start of the summit eruption at Kīlauea. The

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Color map showing lava lake thickness
December 22, 2020

December 22, 2020—Kīlauea summit eruption lava lake depth map

Aerial visual imagery collected during an overflight of Kīlauea Volcano's summit just after 11:30 a.m. HST on December 22, 2020, was used to create a preliminary topographic model. When compared to pre-eruption topographic models, it shows that the bottom of Halema'uma'u crater has been filled by almost 150 m (yd) of lava. Mapping indicates that the more vigorous north 

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Color thermal map of lava lake
December 22, 2020

December 22, 2020—Kīlauea summit eruption thermal map

A helicopter overflight today (Dec. 22, 2020) at approximately ~11:30 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 690 m (yd) E-W axis and 410 m (yd) in N-S axis. The lake area is about 22 hectares (54 acres

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December 22, 2020

Fissure Activity Within Halema‘uma‘u Crater, Kīlauea Volcano

 Telephoto videos capture fissure activity within Halema‘uma‘u crater on December 22, 2020, at approximately 3:35 PM HST. (1) The first video shows the main northern fissure. The lava fountains have built up a horseshoe-shaped spatter cone (dark in color) around the perimeter of the vent. (2) 2) The second video shows the smaller western fissure. This fissure feeds a small

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View into fissure 8
December 6, 2018

One of the most frequently asked questions of USGS Hawaiian Volcano Observatory (HVO) scientists over the last several months has been, “Is the eruption over?”

What is next for Kīlauea Volcano
November 29, 2018

This is, without a doubt, the most intellectually exciting time to be a volcanologist at the USGS Hawaiian Volcano Observatory. The current inactivity at Kīlauea has so many possible outcomes that it is a real challenge to figure out what might happen next. And intellectual challenges are stimulating and exciting.

Sulfur dioxide and hydrogen sulfide gases
November 21, 2018

In this season of giving thanks, Island of Hawai‘i residents and visitors can be thankful for the return of good air quality, generally free of volcanic air pollution.

earthquakes that occurred beneath the island
November 15, 2018

November 2018. Has it already been six months since lava began flowing through Hawai‘i County's lower Puna District? Has it only been three months since activity at fissure 8 ended rather abruptly?

Kīlauea Volcano showing the main collapse area
November 8, 2018

The prolonged yet dramatic partial collapse of Kīlauea caldera this past summer was the first to be observed in detail and the largest measured by subsidence volume of more than a dozen summit collapses in the past 200 years. The earliest known collapses (1823, 1832, and 1840) were large in subsidence volume but the process was not recorded by witnesses.

map of Kīlauea Volcano's lower East Rift Zone
November 1, 2018

During Kīlauea Volcano's recent lower East Rift Zone (LERZ) eruption, lava-flow maps were a staple of the public outreach effort by the USGS Hawaiian Volcano Observatory (HVO).

panoramic view, Hawai‘i Volcanoes National Park's Crater Rim Drive
October 25, 2018

The 2018 summit collapse and lower East Rift Zone eruption at Kīlauea Volcano were dramatic and, for many Island of Hawai‘i residents, tragic events. As with all eruptive crises, these events offered exceptional opportunities to learn more about how volcanoes work and to answer some "bigger picture" questions.

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