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Real-Time Lava Flow Map from Hawai’i County GIS:
HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Monday, June 11, 2018, 10:32 PM HST (Tuesday, June 12, 2018, 08:32 UTC)
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
Eruption of lava continues from the lower East Rift Zone (LERZ) fissure system in the area of Leilani Estates.
A line of closely spaced vents at Fissure 8 are continuing to erupt producing fountains reaching heights up to 160 feet, just higher than the spatter cone around them. This activity continues to feed the fast moving channelized flow that is entering the ocean at Kapoho. Weak spattering is continuing at Fissures 16 & 18 as has been noted for the last several days. This evening’s over flight showed a strong steam plume on the south end of the ocean entry with frequent steam explosions at the flow front.
Pele’s hair and other lightweight volcanic glass from 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 for several days.
Volcanic gas emissions remain very high from Fissure 8 eruptions. Gas emissions have increased over the past two weeks. Trade wind conditions are expected to bring vog to the south and west sides of the Island of Hawaii.
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.
Kīlauea Volcano Summit
Seismicity levels have been increasing since the small explosion this morning. There have been no significant ash emissions since that early morning event. If the pattern of seismic increase seen before previous explosions continues to repeat we expect there may be another event in the next 6-12 hours. 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 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 intermittent explosive activity.
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