Kilauea volcano update, Hawaii Volcanoes National Park
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July 1
9,  2018

Hawaii Volcanoes National Park

Current Volcano Alert Level: ALERT
Current Aviation Color Code: RED

Kīlauea Volcano Lower East Rift Zone

Kīlauea Volcano Lower East Rift Zone

The eruption in the lower East Rift Zone (LERZ) continues with no significant
change during the past 24 hours.

Fountains from Fissure 8 spatter cone continue to supply lava to the open channel
with intermittent small, short-lived overflows. The spatter cone is now about 55 m
(180 ft) tall at its highest point, and fountains rarely rise above that point. At the
coast, the northern margin of the flow field is still oozing pasty lava at several
points in the area of Kapoho Beach Lots. Lava was entering the sea over a broad
area this morning primarily on the northern side of the flow front. As shown by
the July 02 thermal map of the flow field, the lava channel has crusted over about
0.8 km (0.5 mi) inland of the ocean entry; lava is oozing from the flow's molten
interior into the ocean along most of its broad front.

Fissure 22 is spattering about 50-80 m above a conical spatter cone and feeding a
short lava flow that is moving slowly to the northeast along the edge of earlier

Pele's hair and other lightweight volcanic glass fragments from the lava fountain at
Fissure 8 continue to fall downwind of the fissure, dusting the ground within a few
hundred meters (yards) of the vent. 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.

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 and 22 eruptions.
Continuing trade wind conditions are expected to bring VOG to the southern and
western parts of the Island of Hawaii. VOG information can be found at https:

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. Low amplitude tremor increased slightly on June 29
associated with renewed activity at Fissure 22. 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.

Kīlauea Volcano Summit

Ash continued to erupt intermittently from the vent within Halemaʻumaʻu crater at
Kīlauea's summit. Additional explosive events that could produce minor amounts
of ash fall downwind are possible at any time. Earthquake activity is elevated at
the summit, with many small events occurring overnight. Volcanic gas emissions
at the summit remain high.

Activity Summary also available by phone: (808) 967-8862

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