Scientists: Explosive eruption risk rises for Hawaii volcano

May 10, 2018 by Sophia Yan And Audrey Mcavoy
Scientists: Explosive eruption possible at Hawaii volcano
Visitors take pictures as Kilauea's summit crater glows red in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)

Hawaii's Kilauea volcano could soon send boulders and ash shooting out of its summit crater in the kind of explosive eruption last displayed nearly a century ago.

Scientists said Wednesday the risks of an explosive summit eruption will rise in coming weeks as magma drains down the flank of the volcano toward the area lava started erupting from fissures in a residential neighborhood last week.

A summit explosion could also release ash, steam and sulfur dioxide gas.

Kilauea has destroyed 36 structures—including 26 homes—since it began releasing lava from vents about 25 miles (40 kilometers) east of the summit crater. There are now 15 of the vents spread through the Leilani Estates and neighboring Lanipuna Gardens neighborhoods.

Hawaii Gov. David Ige said a geothermal energy plant near the lava outbreak was accelerating its removal of stored flammable gas as a precaution.

The Puna Geothermal Venture plant has about 50,000 gallons (189,270 liters) of pentane . Ige, a Democrat, expected it be removed by the end of Thursday.

It would be "very, very hazardous" if a volcanic vent opened under the facility where the fuel is stored, the governor said.

The plant, which is owned by Ormat Technologies of Reno, Nevada, is across a highway from where lava has been erupting.

Scientists: Explosive eruption possible at Hawaii volcano
Visitors watch as steam and gas rise from Kilauea's summit crater in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)

In coming weeks, the summit crater could eject blocks up to 2 yards (1.8 meters) in diameter a little less than a mile (1.6 kilometers) away, the United States Geological Survey said. It could also send pebbles shooting into the air several miles away, the agency said. Distant communities such Hilo, about 30 miles (48 kilometers) away, could get a dusting of ash.

The receding lava lake resembles conditions seen before a major summit eruption in 1924, said Tina Neal, scientist-in-charge at the USGS Hawaiian Volcanoes Observatory.

That explosion killed one person and sent rocks, ash and dust into the air for 17 days.

This event could occur again when the summit lava lake drops so low that groundwater can flow into the conduit that feeds magma to the crater. The magma would heat the water and create steam would push accumulated rocks out in an explosion.

Don Swanson, a geologist with the Hawaiian Volcano Observatory, said the magma is likely to drop below the water table around the middle of the month. Scientists don't know how long after that it an explosion could occur.

Scientists: Explosive eruption possible at Hawaii volcano
Hawaii National Guard Sgt. Milo Kalama checks on sulphur dioxide levels at the 13th fissure that has opened up in the Leilani Estates neighborhood Estates near the town of Pahoa, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Sophia Yan)
"We suspect it's a rapid process. We really don't know for certain," he told reporters on a conference call.

No one lives in the immediate area of the summit crater. Hawaii Volcanoes National Park, which includes the crater and surrounding region, announced Wednesday that it will close Friday in anticipation of the possible explosive event.

"It seems pretty safe to me right now but they'd know best," said Cindy Woodd, who was visiting from British Columbia, Canada. "We don't know what's going on underground. Life and safety is what's most important."

Authorities previously ordered nearly 2,000 residents to leave the neighborhoods in and around the vents in the mostly rural district of Puna. But some ignored the order and stayed to watch over their property. Authorities went door-to-door in Lanipuna to get people out of their homes on Tuesday.

Police said Wednesday they arrested a man suspected of burglarizing homes in Leilani Estates. A resident saw the man leaving his house when he returned to retrieve personal belongings. The resident and a friend took the suspect to police officers, who arrested him.

Some residents have refused to follow evacuation orders because of fears their homes will be looted.

This photo provided by the U.S. Geological Survey shows an ash column rising from the overlook at Halema'uma'u Crater at the summit of Kilauea Volcano in Hawaii Volcanoes National Park on the island of Hawaii at 8:29 a.m. HST Wednesday, May 9, 2018. Hawaii Volcanoes Observatory interprets the short-lived explosion was triggered by a rockfall from the steep walls of the crater. (U.S. Geological Survey via AP)
Scientists: Explosive eruption possible at Hawaii volcano
Visitors take pictures as Kilauea's summit crater glows red in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
This photo provided by the U.S. Geological Survey shows severe ground cracks associated with what's known as Fissure 14 beneath a burned-out landscape in Leilani Estates near the town of Pahoa, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (U.S. Geological Survey via AP)
Scientists: Explosive eruption possible at Hawaii volcano
Visitors take pictures as Kilauea's summit crater glows red in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
Kilauea's summit crater glows red in Volcanoes National Park, Hawaii. Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
Steam and gas rise from Kilauea's summit crater in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
This photo provided by the U.S. Geological Survey shows a Hawaii Volcano Observatory geologist recording a temperature of 103 degrees C (218 degrees F) at a crack along Nohea Street in Leilani Estates near the town of Pahoa, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (U.S. Geological Survey via AP)
Scientists: Explosive eruption possible at Hawaii volcano
Steam and gas rise from Kilauea's summit crater in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
A visitor walks along the trail as steam and gas from Kilauea's summit crater fill the air in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
Visitors watch as steam and gas rise from Kilauea's summit crater in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
Visitors watch as steam and gas from Kilauea's summit crater fills the air in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
Scientists: Explosive eruption possible at Hawaii volcano
Steam and gas rise from Kilauea's summit crater in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)
In this photo provided by the U.S. Geological Survey, a geologist walks along center lane lines that have been offset by fissuring on Leilani Street in Leilani Estates near the town of Pahoa, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (U.S. Geological Survey via AP)
Scientists: Explosive eruption possible at Hawaii volcano
Kilauea's summit crater glows red in Volcanoes National Park, Hawaii, Wednesday, May 9, 2018. Geologists warned Wednesday that Hawaii's Kilauea volcano could erupt explosively and send boulders, rocks and ash into the air around its summit in the coming weeks. (AP Photo/Jae C. Hong)

Explore further: Volcanic activity pauses at Hawaii crater but more eruptions expected

Related Stories

Hawaii volcano sends more lava, sulfur gas into communities

May 4, 2018

The Kilauea volcano sent more lava into Hawaii communities Friday, a day after forcing more than 1,500 people to flee from their mountainside homes, and authorities detected high levels of sulfur gas that could threaten the ...

Recommended for you

New interactive scenario explorer for 1.5 degrees C pathways

October 16, 2018

IIASA and the Integrated Assessment Modeling Consortium (IAMC) have made the scenarios underlying last week's Intergovernmental Panel on Climate Change (IPCC) 1.5°C Special Report publicly available in an interactive online ...

Two degrees decimated Puerto Rico's insect populations

October 15, 2018

While temperatures in the tropical forests of northeastern Puerto Rico have climbed two degrees Celsius since the mid-1970s, the biomass of arthropods—invertebrate animals such as insects, millipedes, and sowbugs—has ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.