Unified Interior Regions

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Map of Flow Field...
January 5, 2018

Recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of Flow Field...
December 13, 2017

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

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

Thermal map over the Episode 61g lava flow. 

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.

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July 7, 2018

Kīlauea Volcano — Timelapse Changes at Caldera (6/13 - 7/7)

This series of images from June 13 through July 7, 2018, show dramatic down-dropping of part of Kīlauea Volcano's summit caldera floor. For weeks,

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Camera looking over a summit
July 7, 2018

Kīlauea Volcano — SO2 Camera

For several years, a special ultraviolet camera has been located near Keanakākoʻi Crater at Kīlauea's summit. The camera was capable of detecting SO2 gas coming from Halema‘uma‘u crater. This morning, the camera was removed because there is very little SO2 to measure these days at the summit. In addition, cracking near Keanakākoʻi Crater was making access difficult.

Fissure eruption
July 7, 2018

Kīlauea Volcano — Fissure 8

View of Fissure 8 and channel during the morning overflight on July 7.

Lava entering the ocean
July 6, 2018

Kīlauea Volcano — Kapoho Bay

Ocean entry in Kapoho as viewed from morning helicopter overflight.

Satellite image over crater
July 6, 2018

Kīlauea Volcano — Satellite View of Kīlauea Summit

The WorldView-3 satellite acquired this view of Kīlauea's summit on July 3. Despite a few clouds, the area of heaviest fractures in the caldera is clear. Views into the expanding Halema‘uma‘u crater reveal a pit floored by rubble. HVO, on the northwest caldera rim, is labeled.

Dust rising from inside a crater after a rock collapse
July 5, 2018

Kīlauea Volcano — Dust from Summit Explosion

Rocks generate brown dust as they tumble down the western caldera wall during the collapse explosion event on July 5, 2018.

Dust rising from a crater after a rock collapse
July 5, 2018

Kīlauea Volcano — Collapse and Dust Rising at Halema`uma`u Crater

At 1:20 PM HST on July 5, a collapse explosion event occurred at Kīlauea's summit. The energy released by the event was equivalent to a M5.2 earthquake. The shaking

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A small lavafall in the middle of a lava flow.
July 5, 2018

Kīlauea Volcano — Lavafall Near Kapoho Crater

Near the Kapoho Crater, in the area called Four Corners, the lava channel makes a 90-degree bend. After lava exits the bend, it makes a short drop to form a lavafall. A side channel makes a short surface diversion before rejoining the existing channel.

Levees created from cooled lava
July 5, 2018

Kīlauea Volcano — Lava Levees

Lava, from small overflows, cools and congeals along the banks of the lava channel to build lava levees. The levees also build up as moving lava pushes cooled 

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Lava entering the ocean with laze plumes rising
July 5, 2018

Kīlauea Volcano — Kapoho Coastline Delta

Lava enters the sea along the Kapoho coastline, building a delta that is now over 555 acres in size.

Aerial photo over Kapoho area showing lava entering ocean and passing residential areas
July 5, 2018

Kīlauea Volcano — Aerial of Kapoho Area

Aerial view of the lava channel and active margins between Kapoho Crater (upper right) and the coast (lower left). The northern margin of the flow field is advancing at several points in the area of Kapoho Ag and Beach Lots (vegetated areas in center of image). Image courtesy of Hawaii County Fire Department.

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A virtual flyover of Pu‘u ‘Ō‘ō...
April 19, 2018

A virtual flyover of Pu‘u ‘Ō‘ō

Surface flows on the 61g flow field remain active. Most breakouts a...
April 18, 2018

Ongoing changes at Pu‘u ‘Ō‘ō, with continued breakouts near the vent

Summit deflation leads to slight drop in lake level...
April 17, 2018

Summit deflation leads to slight drop in lake level

830-year-old explosion deposit
April 12, 2018

Three deposits from explosive eruptions at the summit of Mauna Loa are located west, northwest, and east of Moku‘āweoweo, the volcano's summit caldera. In map view, these deposits are fan-shaped. Along the ‘Āinapō Trail, 2.8 to 3.5 km (1.7 to 2.2 mi) southeast of the caldera, several kīpuka expose a fourth distinct explosive deposit.

A closer look at Kīlauea's summit lava lake on Wednesday evening, a...
April 11, 2018

A new USGS Scientific Investigation Report describes 2016 lava lake activity, including lake surface textures and appearance, surface motion, explosions, outgassing and most aspects of the spattering behavior. 

April 1868 Mauna Loa eruption can be seen in this aerial photo
April 5, 2018

Already reeling from a destructive earthquake and deadly tsunami and mud flow on April 2, 1868, Ka‘ū residents on the Island of Hawai‘i hoped for a reprieve, but it was slow to come.

Tsunami Awareness Hawai‘i...
April 2, 2018

Throughout the month, Federal, State, and Local government agencies, the Pacific Tsunami Museum, and other organizations will offer outreach events to increase awareness of Hawaii's tsunami hazards.

Degraded coral reefs at Kahekili Beach Park, west Maui, Hawai‘i.
March 30, 2018

According to a study by USGS scientists, polluted, low-pH groundwater discharging onto a shallow coral reef off Kahekili Beach Park in west Maui, Hawai‘i, further increases seawater acidity and exposes corals to nitrate concentrations 50 times higher than normal.

Corallimorph infestation on coral reef 2
March 29, 2018

Honolulu, Hawaii – Control efforts such as the removal of shipwrecks and application of chlorine may help mitigate the damaging effects of corallimorph, which is a type of invasive anemone, on valuable coral reefs in the Central Pacific Ocean, according to a new U.S. Geological Survey study.

Destruction caused by the 1868 great Kau earthquake
March 29, 2018

This week marks 150 years since the largest earthquake to strike Hawaii in the last two centuries. Estimated to have been at least magnitude-7.9, this earthquake struck near Pāhala in the Ka‘ū District of the Island of Hawai‘i on April 2, 1868.

Matt Patrick on Kīlauea
March 27, 2018

For the 10th anniversary of Kīlauea Volcano's summit eruption, USGS–Hawaiian Volcano Observatory research geologist Matt Patrick talks about his work monitoring the lava lake in the Halema'uma'u Crater.

Volcano Art at Hawai`i Volcanoes National Park—A Science Perspectiv...
March 26, 2018

In this new USGS Open-File Report, artwork is matched with the approximate date and volcanological context of the scene, showing eruptions at Kīlauea and Mauna Loa in the late 19th century.