Lava Flow Continues to Advance Towards Pahoa Market Place and Highway 130

USGS Hawaiian Volcano Observatory (HVO) scientists conducted a helicopter overflight of the June 27th lava flow yesterday afternoon and mapped its perimeter.

1230map

At the time of the flight, the leading tip of the flow was stalled 530 m (580 yd) from the Pahoa Marketplace, but several small breakouts were active immediately upslope from the front. The flow had advanced about 150 m (~165 yd) since December 27.

The leading part of the flow consisted of several small, active lobes this afternoon. The front of the lobe that crossed the firebreak was stalled, though breakouts were active about 50 m (55 yd) upslope. Another lobe (area of most visible smoke in center) was about 300 m (330 yd) upslope of the tip and 150 m (165 yd) upslope of the firebreak. A third lobe was 350 m (385 yd) upslope of the firebreak. The view is to the northeast.

The leading part of the flow consisted of several small, active lobes this afternoon. The front of the lobe that crossed the firebreak was stalled, though breakouts were active about 50 m (55 yd) upslope. Another lobe (area of most visible smoke in center) was about 300 m (330 yd) upslope of the tip and 150 m (165 yd) upslope of the firebreak. A third lobe was 350 m (385 yd) upslope of the firebreak. The view is to the northeast.

Many small breakouts were also active along the length of the flow up to about 3 km (2 miles) upslope from the front of the flow, as well as within the ground crack area near the True/Mid-Pacific well pad and about 3 km (2 miles) downslope from Puʻu ʻŌʻō.

This compares a normal photograph of the active flow front with a thermal image.

1231thermalThe photograph has been cropped and rotated to approximate the perspective of the thermal image. The thermal image shows that small breakouts were present immediately behind the leading tip of the flow and farther upslope, indicated by the white and yellowish pixels.

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