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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Shaded relief map of Kīlauea Volcano's summit with caldera bounding...

Shaded relief map of Kīlauea's summit with caldera

Shaded relief map of Kīlauea Volcano's summit with caldera bounding faults delineated.

Clear day view of PG cam

[PGcam] Lower East Rift Zone Camera from Lower East Rift Zone

This image is from atop Puʻu Honuaula looking southwest towards Leilani Estates. Fissure 22 is on the far left, and Puʻu Kaliu is the cone left of center on the skyline. The fissure 8 channel wraps from the center of the image to the lower right side of the image.

Disclaimer

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

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Solar-powered seismic station located near the summit of Mauna Loa ...

Solar-powered seismic station located near summit of Mauna Loa Volcano

Solar-powered seismic station located near the summit of Mauna Loa Volcano, Hawai‘i.

Clear day view of Mauna Loa during tradewind conditions from the su...

Clear day view of Mauna Loa during tradewind conditions from the su...

Clear day view of Mauna Loa during tradewind conditions from the summit of Kīlauea Volcano

webcam image of shield volcano

[MKcam]: Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea

Live Image of Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea [MKcam].

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 visibility. The

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Cleary day view of R3 cam

[R3cam] Mobile Cam 3

This image is from a research camera positioned on the southeast flank of Puʻu ʻŌʻō, looking toward the northeast and lower east rift zone.

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

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At Kīlauea, when the lava column drops below the water table, groun...

At Kīlauea, when the lava column drops below the water table, groun...

At Kīlauea, when the lava column drops below the water table, groundwater may come into contact with with magma or hot rocks, causing violent steam explosions.

Recent changes at Kīlauea volcano - October 7, 2021

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

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Clear day view of HP cam

[HPcam] Lava Flow 61G from Holei Pali

This image is from a research camera positioned on Holei Pali, looking east towards Lava Flow 61G and Kalapana.

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.

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Image: GPS monitoring of Hawaiian Volcanoes

GPS monitoring of Hawaiian Volcanoes

The USGS Hawaiian Volcano Observatory uses a variety of ground- and satellite-based techniques to monitor Hawai‘i’s active volcanoes.  Here, an HVO scientist sets up a portable GPS receiver to track surface changes during an island-wide survey of Hawai‘i’s volcanoes.

 

Attribution: Natural Hazards
Earthquakes beneath Mauna Loa's summit prior to 1975 and 1984 erupt...

Earthquakes beneath Mauna Loa's summit prior to 1975 and 1984 erupt...

Earthquakes beneath Mauna Loa's summit prior to 1975 and 1984 eruptions. Green circles 0-5 km (0-3 mi) deep, red circles 5-10 km (3-10 mi) deep.

USGS HVO geochemist measuring gases released from Kīlauea with a Fo...

USGS HVO geochemist measuring gases released from Kīlauea with a Fo...

USGS HVO geochemist measuring gases released from Kīlauea with a Fourier transform infrared (FTIR) spectrometer, an instrument that detects gas compositions on the basis of absorbed infrared light.

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USGS
June 11, 1993

The largest earthquake in Hawai`i since January 26 occurred at 2:58 a.m. Tuesday. Many residents were awakened by the shaking from this magnitude-4.9 earthquake. The Jan. 26 earthquake, which occurred beneath Pahala, had a comparable magnitude. 

USGS
June 4, 1993

This week marks the anniversary of one of the largest of Mauna Loa's historic eruptions. On June 1, 1950, the last great eruption of Mauna Loa began just after 9:00 p.m. 

Eruption's flows continue, danger remains...
May 28, 1993

The eruption on Kīlauea's East Rift Zone continues with little change. The episode 51 and 53 vents on the southwest flank of the Pu`u `O`o cone continue to feed lava directly into a tube system that transports the lava to Palama Pali and beyond, to the ocean entries at Kamoamoa. 
 

USGS
May 21, 1993

A magnitude 3.0 earthquake was widely felt in the Hilo area on Thursday afternoon at 1:45 p.m. The earthquake was about 25 miles deep and was located offshore about 10 miles east of Hilo. 

USGS
May 15, 1993

Volcanoes around the world emit a variety of gases in different proportions, with the main components invariably being carbon dioxide, water, and sulfur dioxide. Minor components include, but are not limited to, hydrogen gas, carbon monoxide, hydrochloric acid, hydrofluoric acid, methane, and hydrogen sulfide.
 

USGS
May 14, 1993

May 18 marks the anniversary of the 1980 eruption of Mount St. Helens that laid waste to over 200 square miles of forest and killed 57 people, as well as thousands of wild animals and birds.
 

USGS
May 10, 1993

Kīlauea is famous for eruptions of the type we are now experiencing - quiet effusion of lava that makes the eruption approachable. However, not all of Kīlauea's eruptions have been so passive and approachable.

USGS
May 7, 1993

The 10-year-long eruption along Kīlauea's East Rift Zone continues with little change. Active flows travel underground to the ocean in lava tubes from the eruptive vents on the south and west sides of the Pu`u `O`o cone.
 

As lava slows, diversion of Etna discussed...
May 1, 1993

The episode 51 vents on the west flank of Pu`u `O`o were active from April 23 at about 11:00 a.m. until April 28 at 11:30 a.m., when the eruption stopped once again. Since then, the lava lake inside Pu`u `O`o vent has risen from about 140 to between 120 and 130 feet below the rim of the crater.
 

USGS
April 30, 1993

The 10-year-long eruption on Kīlauea's East Rift Zone continues with little change. During the week, the lavaentries into the ocean consolidated to three main entries on the east and west edges of the Kamoamoa flow and near the west edge of the Lae`apuki flow. 
 

USGS
April 23, 1993

The missing visitor to Hawai`i Volcanoes National Park serves as a tragic reminder that active volcanoes can be unpredictable and dangerous, however passive and approachable their eruptions. Kīlauea is no exception. 
 

USGS
April 16, 1993

The 10-year-long eruption on Kīlauea's East Rift Zone continued this past week. Lava is erupting from the episode 51 and 53 vents on the southwest side of the Pu`u `O`o cone, but is being carried towards the coast entirely within underground lava tubes as far as the top of the pali.