Puʻu ʻŌʻō Lava Flow “61g” Continues Advancing Downslope

The episode 61g flow from Puʻu ʻŌʻō 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).

The flow front was roughly 100 m (330 ft) from the northern boundary of the abandoned Royal Gardens subdivision. Puʻu ʻŌʻō, and its plume, are visible near the top of the image.  (Click to enlarge)

The flow front was roughly 100 m (330 ft) from the northern boundary of the abandoned Royal Gardens subdivision. Puʻu ʻŌʻō, and its plume, are visible near the top of the image. (Click to enlarge)

The lava pond in the western portion of Puʻu ʻŌʻō crater remains active, and has enlarged since our last observation.

The pond today was about 50 m (160 ft) in diameter, with spattering along the western margin.  (Click to enlarge)

The pond today was about 50 m (160 ft) in diameter, with spattering along the western margin. (Click to enlarge)

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.  (Click to enlarge)

The lobe being sampled was typical of the many scattered pāhoehoe breakouts along the flow margin today. (Click to enlarge)

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.  (Click to enlarge)

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. (Click to enlarge)

Incandescent vents are still open on the northeast flank of Puʻu ʻŌʻō.

From the ground, no views of the lava were possible because the area around the vent was too unstable and dangerous to approach. (Click to enlarge)

From the ground, no views of the lava were possible because the area around the vent was too unstable and dangerous to approach. (Click to enlarge)

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

Click to enlarge

Click to enlarge

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