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Kilauea Alert Level = WARNING Aviation Color Code = ORANGE As of May 4, 2018, 17:45 UTC
HVO Kilauea ORANGE/WARNING - Eruption underway in Lower East Rift Zone
(Change to current status occurred on 2018-05-04 03:35:29 UTC from Alert Level WATCH and Aviation Color Code ORANGE)
For more information see: volcanoes.usgs.gov...:58:00-07:00
New map of 8 eruptive fissures in #LeilaniEstates subdivision in order of formation. More fissure vents with spatter & small lava flows formed early this morning (May 5) & new outbreaks likely.
Halema‘uma‘u, the largest crater in Kīlauea Caldera, was the site of more than 50 explosive events during a 2.5-week period in May 1924. The explosions were then, and remain today, the most powerful at Kīlauea since the early 19th century, throwing blocks weighing as much as 14 tons from the crater. Halema‘uma‘u doubled in diameter, deepened to about 400 m (1300 ft), and drastically changed in behavior—for the next 85 years it no longer hosted a long-lived lava lake, until one returned in 2009.......
Prelude to the eruption – a draining lava lake and a swarm of earthquakes
A lava lake drained out of Halema‘uma‘u in February 1924, followed by a severe earthquake swarm in lower Puna, 50 km down the east rift zone. The seismic activity began building in early April, reaching its peak on April 23 with ground cracking, faulting, coastal subsidence, and hundreds of felt earthquakes. These events indicated the transfer of magma from the summit to lower Puna, either the same magma that left Halemaumau or stored magma that was pushed ahead by that which drained away.
Hawaii County officials say two new lava fissures have opened in a community where some two dozen homes have burned down.
County Acting Mayor Wil Okabe says after a pause in volcanic activity Tuesday the two new fissures bring the total to 14.
EVACUATION - HVO confirm 2 new vents. All Lanipuna residents must evacuate now. Evacuate towards the ocean Isaac Hale Beach Park. Vent number 13 has opened near the intersection of Leilani Aveand Kahukai Rd and Vent number 14 near Kaupili St. and Leilani Ave.
The US Geological Survey on Wednesday warned of possible explosive eruptions in the coming weeks. That could happen because as lava continues to sink in a lake inside a Kilauea crater, an influx of groundwater could interact with the lava to create steam explosions.
In 1924, explosions on Kilauea sent tons of rock flying. Will that happen again?
Those forces would emit "ballistic projectiles" -- as small as pebbles or weighing up to several tons. The agencies also said ash clouds would rise to greater elevations, dispensing ash over wider areas.
"At this time, we cannot say with certainty that explosive activity will occur, how large the explosions could be, or how long such explosive activity could continue," an advisory said.
Geologists warned on Wednesday that Kilauea may be entering a more violent phase of explosive eruptions, the likes of which Hawaii has not seen in nearly a century.