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Scientists looking into the bright glow of Mauna Loa's 1942 eruptiv...
April 28, 1924

Scientists looking into bright glow of Mauna Loa's 1942 eruptive ve...

Scientists looking into the bright glow of Mauna Loa's 1942 eruptive vent. Eruption occurred during WWII and was not publicized to prevent Japanese war planes from navigating to the island at night.

Children pose with 8 ton ballistic block at Kīlauea volcano, Hawai‘...

Children pose with 8 ton ballistic block at Kīlauea, Hawai‘i.

Some of the large ballistic blocks from the Kīlauea eruption of 1924 later became visitor attractions. Many of these blocks remain in place today as evidence of the forces unleashed at Kīlauea during the eruption of 1924.

Clear day view of PE cam

[PEcam] Puʻu ʻŌʻō East Flank from East of Puʻu ʻŌʻō

This image is from a temporary research camera positioned northeast of Puʻu ʻŌʻō, on Puʻu Halulu, looking southwest toward the northeast flank of Puʻu ʻŌʻō.

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

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USGS
October 28, 2019

Ground Motion Model for Deep Earthquakes Beneath the Island of Hawaii

A Ground Motion Model for deep earthquakes beneath the Island of Hawaii by Ivan Wong (Lettis Consultants International, Walt Silva and Bob Drragh Paciifc Engineering and Analysis, Nick Gregor (consultant), and Mark Dober (AECOM).
 

Island of Hawai‘i map, showing Mauna Loa and the other four volcano...

Island of Hawai‘i map, showing Mauna Loa and the other four volcano...

Island of Hawai‘i map, showing Mauna Loa and the other four volcanoes that make up the island. Mauna Loa structural features include summit caldera, rift zones, radial vents, and historical lava flows.

Clear day view of PW cam

[PWcam] Puʻu ʻŌʻō West Flank from Puʻu ʻŌʻō

This image is from a research camera positioned on the northwest flank of Puʻu ʻŌʻō, looking southwest. On the morning of May 24, 2016, this camera was rotated to be pointed northeast to follow a new breakout on the east flank of Puʻu ʻŌʻō.

Disclaimer

The webcams are operational 24/7 and faithfully record the dark of night if there are no

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Image: Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2008-2013

Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2008-2013

Kīlauea Volcano's summit vent "then and now."  In April 2008 (top image), a month after it opened, the vent within Halema‘uma‘u Crater was about 115 feet in diameter.  As of March 2013 (bottom image), it is more than 500 feet across.  

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.

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 a temporary research camera positioned near Kapoho looking northwest. From left to right on the horizon, one can see Puʻu ʻŌʻō vent near the left edge of the image, the gas plume from Halemaʻumaʻu crater near the middle of the image (when clear enough), and Mauna Loa and Mauna Kea farther to the right.

Disclaimer

The

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Image: Catching a Hawaiian Hoary Bat

Catching a Hawaiian Hoary Bat

Wildlife ecologists sets up a net to capture the Hawaiian hoary bat.

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.

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USGS
October 2, 1992

Over the years, scientists at the Hawaiian Volcano Observatory have developed good techniques for short-term eruption predictions (a few hours to a few days' warning) for Kīlauea and Mauna Loa Volcanoes. However, our capabilities for long-term predictions consist predominantly of educated guesswork. 

New map defines lava flow hazard zones on the Big Island...
September 25, 1992

The U.S Geological Survey has recently published a new, full-sized map which defines the boundaries of nine lava flow hazard zones on the island. This map is an updated version of the page-sized map included in the USGS booklet Volcanic and Seismic Hazards on the Island of Hawaii published in 1990. 

Eyewitness accounts tell terror of huge quake in 1868...
September 18, 1992

Residents of Pahala felt a small earthquake (magnitude 3.7) at 10:22 p.m. on September 10. This earthquake was located a few miles northwest of the town and about 6 miles deep. Although the earthquake caused no damage, this was the site of the largest historic earthquake in Hawaii, which occurred in 1868. 

USGS
September 11, 1992

"With all the lava being erupted, is there a large, empty space within the Earth where the lava came from?" This is a frequent question answered by the staff of the U.S. Geological Survey's Hawaiian Volcano Observatory, and the answer is "no."
 

Kīlauea vents active but lava has slowed...
September 7, 1992

The episode 51 vents have been continuously active since early in the morning on July 27. The active vents are located just west of the Pu`u `O`o cinder and spatter cone on the East Rift Zone of Kīlauea Volcano. Episode 51 has been characterized by intermittent activity since it began on March 7.
 

USGS
September 4, 1992

To the non-geologist, lava is hot, orange molten rock, or when cooled, smooth and gray, or black and jagged rock. However, to the geologist or volcanologist, lava contains a set of clues to decipher processes occurring in the interior of the Earth and the volcano.

USGS
August 14, 1992

The Hawaiian Volcano Observatory's primary purpose is to understand how volcanic systems operate. All of the work we do in defining geological hazards posed by the volcanoes, and short-term monitoring of eruptions and lava flows, is made possible by developing this fundamental understanding of volcanic systems.

Episode 51 vents become active again...
July 31, 1992

The episode 51 vents once again became active early Monday morning after a brief pause since the previous Thursday morning. Prior to this last pause, eruptive activity had been continuous since June 21.

Lava expected to flow over pali toward Kamoamoa soon...
July 17, 1992

The episode 51 vents adjacent to Pu`u `O`o on the East Rift Zone of Kīlauea Volcano have been in continuous eruption since before dawn on June 21. Until this period, episode 51 has been characterized by off-and-on activity since it began on March 7. The current eruptive interval is by far the longest and most stable since that time.
 

USGS
July 10, 1992

The Hawaiian Volcano Observatory has joined forces with the University of Hawai`i to promote the collaborative study of volcanoes with the initiation of a new Hawai`i Center for Volcanology. On Tuesday this new center was officially announced during a press conference held in Honolulu on the university campus.

HVO maintains wide seismic network on the Big Island...
July 3, 1992

The Hawaiian Volcano Observatory maintains a network of about 50 seismic stations on the Island of Hawai`i. The purpose of the network is twofold: to define the regional seismicity of the Island of Hawai`i, and to distinguish and study earthquakes as they relate to major fault zones and to the eruption and intrusion of magma. 

Current eruption continuing at low levels...
June 26, 1992

We will cover activity during the last two weeks, since we missed our deadline last week. The episode 51 vents on the west flank of Pu`u `O`o, which began erupting on Wednesday, June 10, shut down on June 16. The vents were then inactive until Sunday, June 21, and have continued to be active through June 26.