Kilauea Eruption: Eruption continues, trade winds to push vog south and west Sunday (July 1)

Hawaii County Civil Defense interactive map of roadblocks, subdivisions, and eruption fissures: hawaii247.com/lavamap

USGS Resources related to the 2018 Kilauea Lower East Rift Zone eruption and Summit Activity

Kīlauea Eruption Information Resources: www.hawaiicounty.gov/lava-rela…

Crowdsourced Kilauea Eruption lavaflow map here.

Livestream webcam of Kilauea summit here.

EPA gas monitor data to www.epa.gov/kilaueaairdata.

Kilauea Eruption Update

This image is from a temporary research camera positioned near Kapoho looking southwest. From left to right, one can see the eruptive fissures, with Fissure 15 on the far left, and Fissure 8 near the center. Webcam image taken Sunday, July 1, 2018 courtesy of U.S. Geological Survey

This image is from a temporary research camera positioned near Kapoho looking southwest. From left to right, one can see the eruptive fissures, with Fissure 15 on the far left, and Fissure 8 near the center. Webcam image taken Sunday, July 1, 2018 courtesy of U.S. Geological Survey


This animation begins a month earlier on April 1 to start with a more typical earthquake pattern and proceeds forward in time at a rate of one day per second. The size of the circles indicate their magnitude, and color represents their depth. Three days before the swarm began the lava within the “Overlook crater” inside of Halema`uma`u Crater overflowed then retreated back below its rim. Then on April 30 the 35 year-old Pu`u `O`o eruption ceased and its cone partially collapsed. This event coincided with the start of a swarm of volcanic earthquakes on Kilauea’s East Rift Zone, a feature extending from the volcano’s summit that carries magma underground through its flank. Eruptions can take place anywhere along this rift zone as well as at the volcano’s summit. Earthquake occurrence then moved northeast along the rift zone away from the summit, suggesting the movement of magma below ground in this direction. Magma reached the surface and erupted as lava on the afternoon of May 3 and is still ongoing (1 July 2018).

This animated GIF shows a sequence of radar amplitude images that were acquired by the Agenzia Spaziale Italiana CosmoSkyMed satellite system. The images illustrate changes to the caldera area of Kīlauea Volcano that occurred between May 5 and June 30 at about 6:00 a.m. HST. The satellite transmits a radar signal at the surface and measures the strength of the return, with bright areas indicating a strong return and dark areas a weak return. Strong returns indicate rough surfaces or slopes that point back at the radar, while weak returns come from smooth surfaces or slopes angled away from the radar. Over time, expansion of the summit eruptive vent within Halema‘uma‘u crater and the widening of Halema‘uma‘u itself are clear. Starting in late May, the development of several cracks outside Halema‘uma‘u is clear, and inward slumping of a large portion of the western, southwestern, and northern crater rim begins. Much of this motion appears to be coincident with the small explosions from the summit that have taken place on a near daily basis since early June. The most recent radar scene, from June 30, shows the formation of cracks over a broader area of the caldera floor, extending east of Halema‘uma‘u (these cracks are the scarps seen in recent photographs from the Keanakākoʻi overlook area). We expect this slumping to continue as long as the collapse events and overall subsidence persist.

This animated GIF shows a sequence of radar amplitude images that were acquired by the Agenzia Spaziale Italiana CosmoSkyMed satellite system. The images illustrate changes to the caldera area of Kīlauea Volcano that occurred between May 5 and June 30 at about 6:00 a.m. HST. The satellite transmits a radar signal at the surface and measures the strength of the return, with bright areas indicating a strong return and dark areas a weak return. Strong returns indicate rough surfaces or slopes that point back at the radar, while weak returns come from smooth surfaces or slopes angled away from the radar. Over time, expansion of the summit eruptive vent within Halema‘uma‘u crater and the widening of Halema‘uma‘u itself are clear. Starting in late May, the development of several cracks outside Halema‘uma‘u is clear, and inward slumping of a large portion of the western, southwestern, and northern crater rim begins. Much of this motion appears to be coincident with the small explosions from the summit that have taken place on a near daily basis since early June. The most recent radar scene, from June 30, shows the formation of cracks over a broader area of the caldera floor, extending east of Halema‘uma‘u (these cracks are the scarps seen in recent photographs from the Keanakākoʻi overlook area). We expect this slumping to continue as long as the collapse events and overall subsidence persist.

High-resolution satellite data are useful for mapping cracks and deformation in the summit caldera at Kīlauea Volcano. This map shows major fractures in yellow (as of June 29) on a base image acquired by the WorldView-2 satellite before the current sequence of events began at Kīlauea. The area of major subsidence has expanded east and south, and slightly west, of the main Halema‘uma‘u crater area. The large, red-shaded area east of Halema‘uma‘u is moving down within a scarp-bounded area, as seen in recent photographs of the summit. Some fractures have also formed to the east-northeast of the red-shaded area of accelerated motion, and also on the south caldera rim where parts of the caldera wall have slumped into the rapidly moving caldera floor below. The dark gray-shaded area within the red shaded area shows the region of most significant down dropping and is currently the deepest part of Kīlauea caldera.

High-resolution satellite data are useful for mapping cracks and deformation in the summit caldera at Kīlauea Volcano. This map shows major fractures in yellow (as of June 29) on a base image acquired by the WorldView-2 satellite before the current sequence of events began at Kīlauea. The area of major subsidence has expanded east and south, and slightly west, of the main Halema‘uma‘u crater area. The large, red-shaded area east of Halema‘uma‘u is moving down within a scarp-bounded area, as seen in recent photographs of the summit. Some fractures have also formed to the east-northeast of the red-shaded area of accelerated motion, and also on the south caldera rim where parts of the caldera wall have slumped into the rapidly moving caldera floor below. The dark gray-shaded area within the red shaded area shows the region of most significant down dropping and is currently the deepest part of Kīlauea caldera.

This is a Civil Defense Message for 6 p.m., Sunday, July 1, 2018.

Hawaiian Volcano Observatory reports that Fissure 8 continues to be very active and is feeding a lava channel to the ocean at Kapoho. The flow is producing a broad ocean entry along the shoreline, and is also oozing fresh lava at Kapoho Beach Lots. Fissure 22 is also active and producing a short flow.  Gas emissions from the fissure eruption and laze at the ocean entry continue to be very high. The National Weather Service reports trade winds will push vog to the south and west side of the island.

Due to volcanic activity, the following polices are in effect:

  • Due to active lava near houses in Kapoho, access by residents is not allowed.
  • Due to frequent earthquakes, residents in the Volcano area are advised to monitor utility connections of gas, electricity, and water after earthquakes.
  • The Disaster Recovery Center is open daily from 8am to 8pm, and is located at the Keaau High School Gym. If you need a ride, buses will resume running between the two shelters and the Disaster Recovery Center between 7:30 am and 9:00 pm.

The emergency alert warning sirens will be tested on Monday at 11:45 am.  This is the normal monthly test of the emergency alert warning sirens.

The Pahoa Post Office is open during normal business hours with temporary Sunday hours from 10 a.m. to 2 p.m. for mail and package distribution only for residents in the affected areas. No retail services on Sunday.

For your safety, heed warnings from Civil Defense officials and stay alert.

Ocean entry laze

Due to the lava entry at the ocean, the following policies are in effect:

  • Access to the area is prohibited due to the laze hazard.
  • Stay away from any ocean plume since it can change direction without warning.
  • The U.S. Coast Guard is actively monitoring the ocean entry area and enforcing a 300-meter standoff zone. Only permitted tour boats are allowed in the area.
  • Health hazards of laze include lung, eye and skin irritation.
  • Be aware that the laze plume travels with the wind and can change direction without warning.

Get the latest Vog Predictions here: mkwc.ifa.hawaii.edu/vmap/

Sulfur Dioxide (SO2) and Vog

Click on image for a full description of air quality levels.

Click on image for full description of air quality levels.

Volcanic gas emissions remain elevated throughout the area downwind of the vents in lower Puna.

  • Severe conditions may exist such as choking and inability to breathe.
  • Sulfur Dioxide (SO2) gas from fissures are especially dangerous for elderly, children/babies and people with respiratory problems.

County, State, and Federal partners continue to monitor the situation. You will be informed of any conditions that affect your safety.

Monitor vog levels and forecasts: People on Hawaii Island outside the area of volcanic activity are also advised to monitor levels of vog at vog.ivhhn.org

The residents of Puna are going through a very difficult time. We ask for your help and understanding.

Illustration of Kīlauea Volcano from the summit caldera to the lower East Rift Zone (LERZ). Blue arrows = contraction across the upper and middle rift zone, black arrows = expansion in LERZ. Blue arrows indicate contraction across the upper and middle rift zone as magma withdrew from this area and moved down the rift zone beginning on April 30, 2018. Black arrows indicate expansion across the rift zone as magma intruded into the LERZ; the widening on about May 18, 2018. Also, beginning in early May, magma began moving from the summit reservoir into the East Rift Zone. Data sources used in this modeling are from the U.S. Geological Survey/ University of Hawaii, NASA, Jet Propulsion Laboratory, Japan Aerospace Exploration Agency/ and the European Space Agency.

Illustration of Kīlauea Volcano from the summit caldera to the lower East Rift Zone.

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