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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Pu‘u ‘Ō‘ō Crater annotated map...
November 29, 2017

This map shows Pu‘u ‘Ō‘ō Crater on Kīlauea Volcano's East Rift Zone on November 22, with labels of the crater's main features.

Thermal map of flow field...
November 22, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
November 22, 2017

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

Map of flow field...
November 1, 2017

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

Thermal map of flow field...
October 12, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
October 12, 2017

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

Thermal map of flow field...
September 21, 2017

Thermal map over the Episode 61g lava flow. 

Map of flow field...
September 21, 2017

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

Thermal map of flow field...
September 1, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
September 1, 2017

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

Map of flow field...
August 20, 2017

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

Map of flow field...
August 9, 2017

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

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24 hour webcam gif of Kilauea summit
January 25, 2021

Last 24 Hours - Live Panorama of Halemaʻumaʻu [S1cam]

Last 24 Hours - Live image of Halemaʻumaʻu temporary webcam image showing the crater lava lake [S1cam]

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic gas. At times, clouds and rain obscure

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Color map of volcano summit
January 25, 2021

January 25, 2021—Kīlauea summit eruption contour map

This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl). The map shows that the lava lake (approximate active area marked in red) has filled 205 m (673 ft) of Halema‘uma‘u since the eruption began at approximately 9:30 p.m. HST on December 20, 2020. USGS map. 

Color photographs of volcanic vent
January 23, 2021

Cycles in Kīlauea's summit eruptive vigor

Cycles in Kīlauea's summit eruptive vigor were present on January 22 and 23, with the lava channel at Halema‘uma‘u's western fissure alternating between high and low flow rates over periods of 5-6 minutes. USGS photos by M. Patrick.

Color photograph of lava lake
January 22, 2021

Active lava at Kīlauea Volcano's summit - 01/22/2021

Active lava was again limited to the western half of the lava lake in Halema‘uma‘u at Kīlauea Volcano's summit. The western vent remained active with cycles of eruptive vigor in the open channel lasting 5-6 minutes. USGS photo by M. Patrick.

Color photograph of active lava
January 22, 2021

Active lava at Kīlauea Volcano's summit - 01/22/2021

Active lava reached as far as the central lake in Halema‘uma‘u at Kīlauea's summit, on the east side of the main island, where crustal foundering was occasionally happening. USGS photo by M. Patrick.

January 22, 2021

Kīlauea Summit Eruption (January 22, 2021)

Flames have been observed numerous times at the western fissure in Halema‘uma‘u, at the summit of Kīlauea. The combusting gas is not certain, but flames were observed numerous times in Halema‘uma‘u during the early 1900s lava lake.

January 22, 2021

Cyclic Fluctuations in Kīlauea's Summit Eruptive Vigor

Cyclic fluctuations in eruptive vigor were present recently at the western fissure in Halema‘uma‘u, at the summit of Kīlauea. The cycles occurred on January 22 and 23, with cycles lasting 5-6 minutes. Peaks in the cycles were expressed as high flow rates in the channel and spattering at the vents. During troughs in the cycles, the channel became nearly inactive. These

Color photograph of volcanic vent
January 22, 2021

Activity at the west vent within Halemaʻumaʻu crater on January 22

Activity at the west vent within Halemaʻumaʻu crater on January 22 included frequent spattering from multiple locations and an open lava channel which drops 20 meters (65 feet) from its source to the lava lake surface. HVO scientists continue to monitor Kīlauea's summit eruption from within an area of Hawai‘i Volcanoes National Park that remains closed to the public for

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January 21, 2021

What’s happening at Kīlauea Volcano?

On December 20, 2020, an eruption began in Halema‘uma‘u at Kīlauea Volcano’s summit, ending a two-year eruptive pause. The water lake that appeared at the bottom of Halema‘uma‘u in late July 2019, which had grown to be over 50 meters (55 yards) deep and more than 10 acres in surface area, quickly vaporized and was replaced by a growing lava lake. The eruption began as

Color photograph of volcanic vent and lava lake
January 21, 2021

Halema‘uma‘u west vent on January 21, 2021

Between overcast and rainy weather, HVO field crews took this photo at 3:34 p.m. HST on January 21, 2021, from the south side of Kīlauea's summit caldera. The photo shows Halema‘uma‘u's active west vent, which overflowed its tubed-over lower half at 2:51 p.m. HST that afternoon.  It then proceeded to create a pāhoehoe flow (the lighter gray in the photo with a orange,

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Color photograph of lava lake
January 19, 2021

Lava lake on the evening of January 19, 2021

This photo, taken at just after 6 p.m. HST on January 19, shows that the western fissure continues to send lava into Halemʻaumaʻu crater through an open channel into the lava lake. The western side of the lava lake has an incandescent surface, while the eastern portion is more crusted over. However, lava continues to flow beneath this eastern portion, supplying breakouts

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Color photographs of volcanic vent
January 19, 2021

Small collapses of Kīlauea's western fissure continue

The western fissure at Kīlauea's summit continues to send lava into Halemʻaumaʻu crater through an open channel into the lava lake. Around sunset on the evening of January 19, field crews observed a minor collapse event of the spatter rampart on its northern rim and the channel margins at 5:46 p.m. HST. Times are indicated on each photo; the first image shows a "before"

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Volcano crater
October 10, 2019

New USGS video posted online:  "Water appears in Halema‘uma‘u"

image related to volcanoes. See description
September 27, 2019

Continued slow rise of water at the bottom of Halema‘uma‘u

image related to volcanoes. See description
September 24, 2019

HVO measures water table at Keller Well

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.