Update on Kīlauea Volcano for Saturday, June 23, 2018

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The eruption in the lower East Rift Zone continues with no significant change during the past 24 hours. Lava from fissure 8 continues to supply lava to the open channel with only small, short-lived overflows. During an overflight early this morning, geologists observed incandescence from Fissure 22, but no associated spattering or flow. Lava is entering the sea this morning on the southern side of the entry area primarily through the open channel, but also as small lava streams along a 0.6 mi wide area. The entry areas are marked by billowing laze plumes.
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At Kīlauea Volcano’s summit, at 6:52 p.m. HST on June 22, after approximately 25 hours of elevated seismicity, a collapse explosion occurred at the summit producing an ash-poor steam plume that rose 500 ft above the ground surface (4,500 ft above sea level) before drifting to the SW. The energy released by the event was equivalent to a magnitude 5.3 earthquake. Seismicity dropped abruptly from a high of 40 earthquakes per hour (many in the magnitude 3 range) leading up to the collapse explosion to 10 or fewer earthquakes per hour afterward. Overnight, seismicity gradually increased, reaching about 30 earthquakes per hour by daybreak. Inward slumping of the rim and walls of Halemaʻumaʻu continues in response to ongoing subsidence at the summit. Sulfur dioxide emissions from the volcano's summit have dropped to levels that are about half those measured prior to the onset of the current episode of eruptive activity. This gas and minor amounts of ash are being transported downwind, with small bursts of ash and gas accompanying the intermittent explosive activity.

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HVO field crews are in the lower East Rift Zone, tracking the fountains, lava flows, and spattering from Fissure 8 as conditions allow and are reporting information to Hawaii County Civil Defense Agency. Observations are also collected on a daily basis from cracks in the area of Highway 130; no changes in temperature, crack width, or gas emissions have been noted for several days.
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Status updates are available on the USGS–Hawaiian Volcano Observatory webpage, at https://volcanoes.usgs.gov/volcanoes/kilauea/status.html
The most recent map of lava flows can be found at https://volcanoes.usgs.gov/vol…/kilauea/multimedia_maps.html
VOG information can be found at https://vog.ivhhn.org/
For forecasts of where ash would fall under forecast wind conditions, please consult the Ash3D model output here: https://volcanoes.usgs.gov/observato…/…/ash_information.html
Information on volcanic ash hazards and how to prepare for ash fall may be found at http://www.ivhhn.org/information#ash (health impacts) OR https://volcanoes.usgs.gov/volcanic_ash/ (other impacts).

USGS Status Update of Kīlauea Volcano - June 21, 2018

6-22 USGS Hawaii Overflight Photos Kilauea Volcano Eruption Drone Update and Lava Flow Map 


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