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Flow front advancement slows, but active breakouts persist near the front
The June 27th lava flow advancement has slowed, with the leading edge of the flow moving only a few tens of meters (yards) over the past two days. Nevertheless, active breakouts persist around the flow front, as shown in this photo by the continued burning of vegetation along the flow margins. This morning, the flow front was 1.1 km (0.7 miles) from Apa‘a St., as measured along a straight line.
A wider view of the flow front from the north. The transfer station on Apa‘a St. is at the left edge of the photo, and Pu‘u ‘Ō‘ō can be seen on the horizon in the upper right.
A closer view of the leading edge of the flow, which consisted of scattered breakouts along the flow margin that were slowly moving through thick vegetation.
A normal photograph along with a thermal image of the flow front. The white box shows the approximate extent of the thermal image. The thermal image clearly shows the distribution of active breakouts (white and yellow areas), which are scattered at the leading edge of the flow but are also present up to about 1.8 km (1.1 miles) behind the flow front.
Although the advancement of the leading edge of the June 27th flow has been minor over the past two days, a view into a skylight on the lava tube today showed that lava in the tube was still swiftly moving downslope towards the flow front.
Pu‘u ‘Ō‘ō Crater remains filled with thick fume, and activity in the crater has not changed significantly over the past week. In the lower portion of the photograph, a line of fume sources marks the path of the June 27th lava tube. The broad circular feature in the left portion of the photograph is the perched lava pond that was active in July.
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