HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT ( 4:54 P.M. / 6.8.2018)


U.S. Geological Survey KILAUEA VOLCANO (VNUM #332010) 19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m) Current Volcano Alert Level: WARNING Current Aviation Color Code: RED

Kīlauea Volcano Lower East Rift Zone Vigorous eruption of lava continues from the lower East Rift Zone (LERZ) fissure system in the area of Leilani Estates. Lava eruption continued at Fissure 8 with vigorous fountains reaching heights of about 220 feet. Geology crews reported no significant changes in the Fissure 8 flow field and two large plumes at the broad ocean entry. The Kapoho Beachlots boundary has not changed since this morning's overflight. There is no lava activity from the other fissures. Following a magnitude-3.2 earthquake at the summit, twelve rockfalls were recorded in Puʻu ʻŌʻō between 10:31 and 10:56 AM with a prominent, but brief, red dust plume ejected into the air around 10:50 AM. Pele's hair and other lightweight volcanic glass from high fountaining of Fissure 8 are falling downwind of the fissure and accumulating on the ground within Leilani Estates. High winds may waft lighter particles to greater distances. Residents are urged to minimize exposure to these volcanic particles, which can cause skin and eye irritation similar to volcanic ash. The most recent map of lava flows can be found at https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html HVO field crews are on site tracking the fountains, lava flows, and spattering from Fissure 8 as conditions allow and are reporting information to Hawaii County Civil Defense. 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. Volcanic gas emissions remain very high from Fissure 8 eruptions. For the next few days, easterly wind conditions may bring vog not only to the south and west sides of the Island of Hawaii, but also upslope to the island's interior. The ocean entry is a hazardous area. Venturing too close to an ocean entry on land or the ocean exposes you to flying debris from sudden explosive interaction between lava and water. Also, the lava delta is unstable because it is built on unconsolidated lava fragments and sand. This loose material can easily be eroded away by surf, causing the new land to become unsupported and slide into the sea. Additionally, the interaction of lava with the ocean creates "laze", a corrosive seawater plume laden with hydrochloric acid and fine volcanic particles that can irritate the skin, eyes, and lungs. Magma continues to be supplied to the lower East Rift Zone. Seismicity remains relatively low in the area with numerous small magnitude earthquakes and low amplitude background tremor. Higher amplitude tremor is occasionally being recorded on seismic stations close to the ocean entry. Additional ground cracking and outbreaks of lava in the area of the active fissures are possible. Residents downslope of the region of fissures should heed all Hawaii County Civil Defense messages and warnings. USGS/HVO continues to monitor the lower East Rift Zone activity 24/7 in coordination with Hawaii County Civil Defense. Kīlauea Volcano Summit

Low level ash emissions continue and seismicity levels increase at the summit of Kilauea. Inward slumping of the rim and walls of Halema`uma`u continues in response to ongoing subsidence at the summit. Sulfur dioxide emissions from the volcano's summit, while lower than those recorded in early-mid May, remain high enough to impact air quality in downwind regions. Additional bursts of gas released with intermittent explosive activity are also transported downwind and may temporarily affect air quality as well.

For forecasts of where ash would fall under forecast wind conditions, please consult the Ash3D model output here: https://volcanoes.usgs.gov/observatories/hvo/activity_2018.html Information on volcanic ash hazards and how to prepare for ash fall maybe found at http://www.ivhhn.org/information#ash (health impacts) OR https://volcanoes.usgs.gov/volcanic_ash/ (other impacts). MORE INFORMATION Activity Summary also available by phone: (808) 967-8862 Subscribe to these messages: https://volcanoes.usgs.gov/vns2/ Webcam images: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_webcams.html Photos/Video: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_chronology.html Lava Flow Maps: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html Definitions of terms used in update: https://volcanoes.usgs.gov/volcanoes/kilauea/extra/definitions.pdf Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō ) eruptions: https://volcanoes.usgs.gov/volcanoes/kilauea/extra/background.pdf Summary of volcanic hazards from Kīlauea eruptions: https://volcanoes.usgs.gov/volcanoes/kilauea/extra/hazards.pdf Recent Earthquakes in Hawai'i (map and list): https://volcanoes.usgs.gov/hvo/earthquakes/ Explanation of Volcano Alert Levels and Aviation Color Codes: https://volcanoes.usgs.gov/activity/alertsystem/index.php https://pubs.usgs.gov/fs/2006/3139/ CONTACT INFORMATION: askHVO@usgs.gov The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.

*Photo by Bruce Omori

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