Unified Interior Regions

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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. 

Map of flow field west of Kaohe Homesteads with thermal overlay...
February 27, 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 February 27 at about 11:35 AM. 

Map of proximal flow field with thermal overlays...
February 27, 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 February 27 at about 11:50 AM. £

Map of distal flow field with thermal overlay...
February 27, 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 27 at about 11:40 AM. 

Map of distal flow field...
February 27, 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. 

Map of proximal flow field with thermal overlay...
February 23, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow near Pu‘u ‘Ō‘ō on February 23 at about 12:00 PM.

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Lava flowing across the landscape
June 24, 2018

Kīlauea Volcano — Lava Flows from Fissure 8

View to the southwest, looking "up" the lava channel. Lava flows from Fissure 8 (not pictured) through the open channel about 13 km (8 mi) to the ocean. Lava remains incandescent (glowing orange) along the entire length of the channel with sections of cooled lava (black) on the surface. The dark areas in the lower portion of the image are parts of the early lava flow from

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Lava fountain with lava flow
June 24, 2018

Kīlauea Volcano — Fissure 8 Fountain

At fissure 8, fountains provide a vigorous supply of lava that exits the cinder cone and drops over a spillway to enter a well-established 

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Geologist pointing into the distance along a road with a straight roadway beside him.
June 24, 2018

Kīlauea Volcano — Roadway Crack Observations

USGS field crews track activity in and around Leilani Estates in Kīlauea Volcano's lower East Rift Zone. Observations are also collected on a daily basis from cracks in the area of Highway 130, shown here (no changes in temperature, crack width, or gas emissions have been noted recently).

Lava spattering from a cone
June 24, 2018

Kīlauea Volcano — Spatter Cone (Fissure 8)

The spatter cone at fissure 8 is now about 55 m (180 ft) tall. 

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Small plume cloud from a crater
June 24, 2018

Kīlauea Volcano — Small Halema`uma`u Eruption (June 24, 2018)

On June 24 a small ash-poor steam plume rose above the Halema‘uma‘u crater rim following another collapse explosion event at 4:12 p.m. HST (image taken at 4:27 p.m.).

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Kīlauea summit subsides and produces frequent earthquakes...
June 24, 2018

Kīlauea summit subsides and produces frequent earthquakes

On June 23, 2018 at 4:32 p.m. HST after approximately 17 hours of elevated seismicity, a collapse explosion occurred at the summit if Kīlauea. The energy released by the event was equivalent to a magnitude 5.3 earthquake. During the intense shaking, rockfalls cascaded down the northern margin of the caldera wall just below Uēkahuna Bluff sending rock dust into the air.

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Crater view
June 23, 2018

Kīlauea Volcano — Halema`uma`u Crater Collapse (June 23, 2018)

On June 23, 2018 at 4:32 p.m. HST after approximately 17 hours of elevated seismicity, a collapse explosion occurred at the summit if Kīlauea. The energy released by the

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Kīlauea fissure 8 lava channel transports "lava boats"...
June 23, 2018

Kīlauea fissure 8 lava channel transports "lava boats"

Geologists captured this time-lapse video of the perched lava channel issuing from fissure 8 on Kīlauea's lower East Rift Zone.

Rafts of accreted lava move down stream and look like boats moving down a river. These are termed lava balls or lava boats and form when portions of the fissure 8 cone or levees break away and are rafted down stream. As they move along

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Aerial of lava channel
June 22, 2018

Kīlauea Volcano — Fissure 8 Lava Channel

Early morning view of the open lava channelbeginning about 5 km (3.1 miles) from Fissure 8. The channel bends 90 degrees to the south (right) on the far side of

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Lava fountaining with lava channel flowing away
June 22, 2018

Kīlauea Volcano — Fissure 8 Lava Fountain

Lava continues to erupt at a high rate from 

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Mauna Loa Back to Normal...
June 22, 2018

Mauna Loa Back to Normal

View of cinder cones in the Northeast Rift Zone near the summit of Mauna Loa. View to the north-northeast with Mauna Kea in the background. Mauna Loa has erupted 33 times since 1843, most recently erupting in 1975 and 1984. Photo credit: Matt Patrick, USGS

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Kīlauea Volcano's East Rift Zone eruption: here's what happened in ...
December 29, 2016

As the East Rift Zone eruption begins its 35th year, let's review what happened over the past 12 months.

19th century virtual reality brings Hawaiian volcano to life...
December 22, 2016

In 1888, Tavernier went one step further and created what we would now call a virtual reality depiction of Kīlauea volcano—the "Panorama of Kīlauea," an 11-foot tall canvas arranged in a circle with a 90-foot circumference.

USGS
December 18, 2016

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded an offshore magnitude-4.5 earthquake south the Island of Hawai‘i on Sunday, December 18, at 6:30 a.m., HST.

An HVO geologist photographs an active ‘A‘ā flow on Kīlauea Volcano...
December 15, 2016

Have you ever wondered why Kīlauea Volcano's current lava flow is called the "61g" flow? To explain, we must go back to the beginning of the ongoing eruption. 

January 2017 is Hawai‘i Island's 8th annual Volcano Awareness Month...
December 8, 2016

The New Year is just around the corner, so it's time to remind everyone that January is Volcano Awareness Month on the Island of Hawai‘i.

International volcanologists gather to addresses best practices in ...
December 1, 2016

In mid-November 2016, 70 representatives of volcano observatories from 20 volcanically active nations around the world came together in Vancouver, Washington, to share techniques, lessons learned, and challenges faced in preparing effective, useful volcano hazard maps and analyses. 

An assumption about Kīlauea Volcano is proven wrong...
November 23, 2016

Everyone extrapolates facts and makes assumptions based on those facts. Sometimes, such an assumption is repeated so often that it takes on the aura of a "fact" itself. This is the story of how one such assumption about Kīlauea's recent past was proven wrong—and only in the past couple of months!

Seabirds struggle for survival on Mauna Loa...
November 17, 2016

High on the slopes of Mauna Loa, the largest active volcano on Earth, a unique Hawaiian seabird struggles for survival. 

Color image of a booklet cover
November 10, 2016

For this winter's vog season, new resources are available to help people become familiar with, and minimize their exposure to, vog.

Eruption of Kīlauea Volcano visible through the cockpit of a small helicopter
November 3, 2016

Helicopter pilots and mechanics crucial for monitoring and observing active volcanoes.

New techniques cement GPS as a critical tool for volcano monitoring...
October 27, 2016

GPS is one of the primary tools we use to monitor ground motion and detect what's happening inside and around Hawaiian volcanoes.

Amber waves of … Pele's hair?...
October 20, 2016

The lava lake within Halema‘uma‘u Crater at the summit of Kīlauea Volcano is creating a scene remindful of a messy barbershop floor, except that it's acres and acres wide rather than a few square feet. The ground downwind of the crater is strewn with Pele's hair, and it is almost impossible to avoid stepping on it.