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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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Kīlauea summit changes - Dec. 25 to 27, 2020

The KW webcam has captured the recent shift in vent activity in Halema‘uma‘u crater wall at Kīlauea's summit. The first image, taken on December 25, 2020, just after 6 p.m. HST shows the northern/eastern vent as more vigorous. HVO field crews observing the activity noted that at approximately 2:40 a.m. HST December 26, 2020, activity at west vent in the wall of Halema‘uma‘

Geologic map of Mauna Kea, showing generalized distribution of lava...

Geologic map of Mauna Kea, showing generalized distribution of lava...

Geologic map of Mauna Kea, showing generalized distribution of lava flows, cinder cones, and glacial deposits of the Laupahoehoe Volcanics.

Panorama of Mauna Ulu

[MUcam] - Mauna Ulu Cam

Live Panorama of Mauna Ulu Cam from [MUcam].

View from M3 cam

[M3cam] The Upper Part of Mauna Loa's Southwest Rift Zone

This image is from a research camera positioned on a cone in Mauna Loa's Southwest Rift Zone in Hawaiʻi Volcanoes National Park. The camera looks northeast (upslope), focusing on the upper part of the Southwest Rift Zone. The upper flank of Mauna Loa forms the skyline.


The webcams are operational 24/7 and faithfully record the dark


Recent changes at Kīlauea volcano

The USGS Hawaiian Volcano Observatory KWcam at Kīlauea's summit has captured changes within Halemaʻumaʻu crater, at Kīlauea's summit, due to the eruption that began on September 29, 2021. At approximately 3:21 pm, HST, new fissures opened at the base of Halemaʻumaʻu crater. These fissures opened east of the large island near the center of the lava lake that was active

Cleary day view of KI Cam

[KIcam] Kīlauea Caldera from HVO Observation Tower

This image is from a research camera mounted in the observation tower at the Hawaiian Volcano Observatory. The camera is looking SSE towards the active vent in Halemaʻumaʻu, 1.9 km (1.2 miles) from the webcam. For scale, Halemaʻumaʻu is approximately 1 km (0.6 mi) across and about 85 m (~280 ft) deep.


The webcams are operational 24


Recent Changes at Kīlauea Volcano

Kīlauea summit KW webcam has captured the recent changes to the summit. The first image, taken on December 20, 2020, just before 6 p.m. HST shows the water lake that was present until Sunday evening. At 9:30 p.m. on December 20, an eruption began in the walls of Halemaʻumaʻu crater, vaporizing the lake. The second image, taken December 24, 2020, just after 6:30 a.m. HST


Kīlauea Volcano 2020-2021 summit eruption replaces water lake

The KW webcam has documented the recent activity within Halema‘uma‘u crater at Kīlauea's summit. The first image, taken on December 20, 2020, just after 6 p.m. HST, shows the water lake that had been growing at the base of the crater over the prior year and a half


KWcam images comparing first 2 weeks of Halema‘uma‘u crater eruption

KWcam webcam images compare the changes within Halema‘uma‘u crater since the eruption at Kīlauea Volcano’s summit started two weeks ago. The left image, taken on December 21 at 7:02 a.m. HST, shows the west vent (lower center) and north vent (center left) both erupting lava that is cascading into the new lava lake. In the right image from this morning, January 4 at 9:30 a.

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January 7, 1994

Editor's note: Today's "Volcano Watch" includes the first half of a 11-year retrospective of the Kīlauea eruption up to October 1992. Next week, the second half will cover the most recent volcanic action at Kīlauea.

December 24, 1993

The snow that fell this past week at the summits of Mauna Kea and Mauna Loa volcanoes reminds us that it can get cold enough to snow, even here in the tropics.

December 23, 1993

The staff and associates of the U.S. Geological Survey's Hawaiian Volcano Observatory extend a warm and cheerful holiday greeting to all of the faithful readers of our column.

December 17, 1993

The National Science Foundation recently supported a scientific drill hole to examine the long-term growth of a Hawaiian volcano. The objective identified by the principal investigators was to drill through as much as possible of Mauna Kea Volcano and determine the variations in the compositions of the lavas over time.

December 10, 1993

The eruption on Kīlauea's East Rift Zone is rapidly approaching another milestone as its 11th anniversary takes place on January 3. This column will feature an extended summary of the eruption, which is by far the most long-lived during historic time.

December 3, 1993

The recent history of Kīlauea has been pieced together from geologic mapping and dating, Hawaiian oral histories, and written observations made following the arrival of Christian missionaries in the 1820s.

November 26, 1993

All of the events that we experience at Kīlauea—eruptions at the summit and on the rift zones, intrusions of magma that don't reach the surface, earthquake swarms that accompany eruptions and intrusion, and the large earthquakes that accompany growth of the volcano and trigger landslides—are responses by the pile of layered lava to the unrelenting pressure of magma rising from below.

November 19, 1993

Ten years ago on November 16, residents of Hawai`i were awakened by an earthquake at 6:13 a.m. The earthquake had a magnitude of 6.6 and was located beneath the Ka`oiki Fault Zone between the summits of Mauna Loa and Kīlauea Volcanoes.

Eruption provides dramatic viewing...
November 13, 1993

The eruption from the episode 51 vents has continued without interruption since October 2. The flows crossed the Chain of Craters Road near Kamoamoa in Hawai`i Volcanoes National Park on November 7, covered part of the archaeological ruins and entered the sea during the evening of November 8.

November 12, 1993

The nearly 11-year-long eruption on Kīlauea's East Rift Zone continues with little change. An active lava pond circulates from west to east inside the Pu`u `O`o cone and produces a bright glow at night. Two vent areas adjacent to Pu`u `O`o are active, although both are now crusted over with cooled lava.

Island of Hawaii sits at the end of a long, old chain of 125 volcan...
November 5, 1993

The Hawaiian Islands form the young end of a chain of more than 125 volcanoes that stretch over 3,720 miles across the north Pacific Ocean.

October 31, 1993

Hawaiian volcanoes pass through a sequence of eruptive stages as they grow. There are three main types of lavas in Hawai`i which erupt during the different stages. These distinct lava types have different chemical compositions and physical properties.