Images

A close-up of clinker at the flow front.

Another view of the flow front, contrasting the hot fluid core of the flow (red) with the brittle clinker (black) that forms the flow exterior.

A video of the flow front moving through vegetation.

A wider view of the lake in Halema‘uma‘u Crater, looking northeast. Jaggar Museum and HVO are beyond the left edge of the photograph. Spattering was active in the southeast portion of the lake.

A typical boundary between crustal plates on the lava lake surface. The plate in the upper left is moving towards the upper left corner of the image.

A video of the spattering in the lava lake at Kīlauea's summit.

The active lava flow from Pu‘u ‘Ō‘ō was on the slope near the top of the Pūlama pali today, one of the steep escarpments on Kīlauea's southeast flank, and had transitioned into a channelized ‘A‘ā flow. The view is to the northwest.

At the time the photograph was taken, the active lava flow from Pu‘u ‘Ō‘ō was on the slope near the top of the Pūlama pali, one of the steep escarpments on Kīlauea's southeast flank, and had transitioned into a channelized ‘a‘ā flow.

This photo is a view from the edge of the ‘A‘ā flow, looking up slope at the flow's channels.

This map shows recent changes to Kīlauea's East Rift Zone lava flow field. The area of the active flow field as of June 23 is shown in pink, while widening and advancement of the active flow as mapped on June 28 is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983-2016) are shown in gray.

Spattering was vigorous in the Kīlauea's summit lava lake this evening, but within the range of normal variation. Spatter was thrown up to the level of the floor of Halema‘uma‘u Crater, about 25 m (80 ft) above the lake surface.

A video of the channelized ‘A‘ā forming the flow front, moving swiftly down the pali.

This photo shows a closer view of the front of the ‘A‘ā flow.

This small-scale map shows Kīlauea's active East Rift Zone lava flow field in relation to the southeastern part of the Island of Hawai‘i. The area of the active flow field on June 23 is shown in pink, while widening and advancement of the active flow field as mapped on June 28 is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983-2016) are shown in gray.

This satellite image was captured on Monday, June 27, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite. The image is provided courtesy of NASA's Jet Propulsion Laboratory. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.

USGS Hawaiian Volcano Observatory scientists investigate a portion of the Great Crack in the Keaiwa flow field on Kīlauea Volcano's Southwest Rift Zone. USGS photo.

The episode 61g flow from Pu‘u ‘Ō‘ō continues advancing downslope. In this photo, the current flow is the lighter color area along the center of the image. The flow front has advanced about 770 m (0.5 miles) since the June 16 overflight, which equates to an advance rate of about 100 m per day (330 ft per day).

An HVO geologist collects a fresh lava sample for chemical analysis. The lobe being sampled was typical of the many scattered pāhoehoe breakouts along the flow margin today.

HVO geologists conduct a VLF (very low frequency) survey across the episode 61g lava tube to measure the depth and cross-sectional area of lava flowing within the tube.

Incandescent vents are still open on the northeast flank of Pu‘u ‘Ō‘ō. From the ground, no views of the lava were possible because the area around the vent was too unstable and dangerous to approach.

An aerial view of the same vent shown at left provided a look of the lava stream within the deep cavity.