Ash cloud from Hawaii volcano sparks aviation red alert

PAHOA, Hawaii - Explosions intensified on Hawaii's Kilauea volcano on Tuesday, spewing ash and sparking a red alert for aviation for the first time since the latest eruption began 12 days ago.

Ash and volcanic smog, or so-called vog, rose up to 12,000 feet (3,657 meters) above Kilauea's crater and floated southwest, covering cars on Highway 11 with gray dust and sparking an "unhealthy air" advisory in the community of Pahala, 18 miles (29 km) from the summit.

An aviation red alert means a volcanic eruption is under way that could affect aviation by spewing ash into air routes, according to the US Geological Survey (USGS) website.

Ash was also a new hazard for residents of Hawaii's Big Island already dealing with volcanic gas and lava that has destroyed 37 homes and other structures and forced around 2,000 residents to evacuate .

A shift in winds was expected to bring ash and vog inland on Wednesday and make them more concentrated, said John Bravender of the National Oceanic and Atmospheric Administration (NOAA).

"We're observing more or less continuous emission of ash now with intermittent, more energetic ash bursts or plumes," said Hawaiian Volcano Observatory Deputy Scientist-In-Charge Steve Brantley on a conference call with reporters.

Ash is not poisonous but causes irritation to the nose, eyes and airways. It can make roads slippery and if emitted in large quantities could cause electrical power lines to fail, said USGS chemist David Damby.

Thousands of Hawaiians forced to flee Kilauea volcano eruptions

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    Hawaiians forced to flee repeated eruptions of the Kilauea volcano, which has already destroyed 26 homes as it spews rivers of lava and fountains of toxic gases into residential areas,

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    were allowed to make a quick visits home on Sunday (May 6) to rescue pets, medication and other essentials.

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    More lava fissures and vents opened overnight in the Leilani Estates area, where lava leapt up to 70 metres into the air, but no new explosions were reported on Sunday from Kilauea, the state's most active volcano.

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    So far, no fatalities or major injuries have been reported from the volcano, which began erupting on Thursday, but at least 26 homes have been destroyed, according to the Hawaii County Civil Defence Agency.

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    The south-east corner of the island was rocked by a powerful 6.9-magnitude earthquake on the volcano's south flank on Friday, the strongest tremor since 1975, and more earthquakes and eruptions were forecast, perhaps for months to come.

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    Although no significant lava flows have yet formed, additional outbreaks of lava, which can reach temperatures of about 1,150 degrees Celsius, were expected.

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    A line of vechicles head for the intersection of Pahoa and Kapoho Roads as evacuees are allowed to return to their Leilani Estates homes to gather belongings

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    Carolyn McNamara, 70, talks with her neighbour, Paul Campbell, 68, at an evacuation center in Pahoa after moving out of their homes

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    Evacuee Stacy Welch checks her phone using an earthquake monitoring app on Hawaii's Big Island

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    Maurice Messina from the Parks and Recreation Department receives supplies donated to evacuees by local residents at te Pahoa Community Center in Pahoa

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    Ron McLain, 58, watches as his husband, Michael Berry, 68, offers water to their dog at an evacuation center in Pahoa after moving out of their hom

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    A volunteer delivers pet supplies to an evacuation center in Pahoa

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    Dr. Tim Richards, a longtime veterinarian on the island and County Councilman checks on evacuee Andrew Linne's dog Scotty at the Pahoa Community Center in Pahoa

NEW FISSURE

The eruption has taken its toll on the island's tourism industry.

Big Island hotel bookings for summer months are off almost 50 per cent from last year as daily news images of lava flows and burning homes scare off visitors to the island of 200,000 people, Rob Birch executive director of the Island of Hawaii Visitor Bureau told journalists on a conference call.

The area bearing the brunt of eruption lies about 25 miles (40 km) down Kilauea's eastern flank, near the village of Pahoa. Lava has burst from the ground and torn through housing developments and farmland, threatening one of the last exit routes from coastal areas, state Highway 132.

The latest tear in the earth or fissure opened on Tuesday, spewing lava and toxic gases that made air quality "condition red" around Lanipuna Gardens and nearby farms, causing "choking and inability to breathe," the Hawaiian Volcano Observatory and Hawaii County Civil Defence said.

Road crews put metal plates over steaming cracks on nearby Highway 130 and reopened it to provide coastal residents an escape route in case a lava flow reaches the ocean and blocks another exit artery, Highway 137, Civil Defence said.

There have been no major injuries or death reported from the eruption.

A looming menace remains the possibility of an "explosive eruption" of Kilauea, an event last seen in 1924. Pent-up steam could cause such a blast that would launch a 20,000-foot (6,100-meter) ash plume from the crater and spread debris over 12 miles (19 km), according to the USGS.

There was no evidence of that on Tuesday, but scientists warned it could happen any time.

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