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Hawaiian Volcano Observatory Update – Kilauea Slowly Moving/Lava Lake in Halemaʻumaʻu Crater Remains Active

Kahaualeʻa 2 flow slowly moving through forest northeast of Puʻu ʻŌʻō

The Kahaualeʻa 2 flow continues to slowly move through the forest northeast of Puʻu ʻŌʻō. Yesterday, the active flow front was 6.3 km (3.9 miles) northeast of the vent on Puʻu ʻŌʻō.

HVO45

Puʻu ʻŌʻō is just left of the center of the photograph in the distance, partially obscured by the smoke.

A closer view of the active flows at the forest boundary, and the numerous plumes of smoke resulting from active lava igniting ʻōhiʻa trees and other vegetation.

Click to Enlarge

Click to Enlarge

This thermal image, taken from the helicopter on today’s overflight, shows the area of active pāhoehoe near the flow front of the Kahaualeʻa 2 flow, northeast of Puʻu ʻŌʻō. Blue and purple areas show warm but inactive areas of the flow, while the white and yellow areas are actively flowing lava. The flow surface consists of numerous scattered pāhoehoe lobes, and the advancement of the flow as a whole results from the combined, incremental movement of these individual lobes.

The black (cold) area at the top of the image is forest.  Click to Enlarge

The black (cold) area at the top of the image is forest. Click to Enlarge

Lava lake in Halemaʻumaʻu Crater remains active

The summit lava lake is contained within the Overlook crater, which is about 160 m (520 ft) by 210 m (690 ft) in size, and set within the larger Halemaʻumaʻu Crater.

 The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater. Click to Enlarge

The lava lake this week has been about 50 m (160 ft) below the rim of the Overlook crater. Click to Enlarge

A closer look at the summit lava lake.

Click to Enlarge

Click to Enlarge

Hawaii Volcanoes Observatory Update

Continuing the same trend of activity observed over the past few weeks, the active breakouts on the Kahaualeʻa 2 flow are still slowly advancing into the forest northeast of Puʻu ʻŌʻō, creating small vegetation fires.

Kahaualeʻa 2 flow still active in forest northeast of Puʻu ʻŌʻō

Kahaualeʻa 2 flow still active in forest northeast of Puʻu ʻŌʻō

This thermal image looks northeast from Puʻu ʻŌʻō, and shows how the subsurface lava tubes feeding the active breakouts on the Kahaualeʻa 2 flow are clearly visible as lines of slightly higher temperatures on the surface.

At the bottom of the image, the lava tube coming from Puʻu ʻŌʻō forks, with the eastern branch supplying lava to the main area of active breakouts (5 km, or about 3 miles, northeast of Puʻu ʻŌʻō) and the western branch feeding a small area of breakouts about 2 km (1.2 miles) north of Puʻu ʻŌʻō.

At the bottom of the image, the lava tube coming from Puʻu ʻŌʻō forks, with the eastern branch supplying lava to the main area of active breakouts (5 km, or about 3 miles, northeast of Puʻu ʻŌʻō) and the western branch feeding a small area of breakouts about 2 km (1.2 miles) north of Puʻu ʻŌʻō.

 

 

Hawaii Volcanoes Observatory Update – Kahaualeʻa 2 Flow Still Active in Forest Northeast of Puʻu ʻŌʻō

The Kahaualeʻa 2 flow remains active, and continues to slowly expand into the forest northeast of Puʻu ʻŌʻō.

 The photo shows the main area of vegetation fires, along the north margin of the flow. Mauna Loa can be seen in the distance in the upper right.  (Click to Enlarge)

The photo shows the main area of vegetation fires, along the north margin of the flow. Mauna Loa can be seen in the distance in the upper right. (Click to Enlarge)

The flow front of the Kahaualeʻa 2 flow has cut a narrow swath through forest northeast of Puʻu ʻŌʻō. The narrow lobe at the front is now inactive, with the main area of surface flows about 2km (1.2 miles) behind the end of this lobe.

Some of these surface flows are slowly expanding northward into the forest, creating vegetation fires. Puʻu ʻŌʻō is in the upper left.

Some of these surface flows are slowly expanding northward into the forest, creating vegetation fires. Puʻu ʻŌʻō is in the upper left.  Click to Enlarge

An equivalent thermal image:

hvo39

This thermal image shows the front of the Kahaualeʻa 2 flow. A narrow lobe at the very front is now inactive (evident by the slightly lower surface temperatures), while the main area of active surface flows (shown by white areas) are farther back from this leading edge. Click to Enlarge

This photo looks southwest, and shows Puʻu ʻŌʻō. The northeast spatter cone on the east rim of the crater is near the center of the photo, and is the vent area for the Kahaualeʻa 2 flow.

 The lava tube feeding the Kahaualeʻa 2 flow extends from the northeast spatter cone down the north flank of Puʻu ʻŌʻō, in a direct line towards the lower right corner of the photo.   Click to Enlarge

The lava tube feeding the Kahaualeʻa 2 flow extends from the northeast spatter cone down the north flank of Puʻu ʻŌʻō, in a direct line towards the lower right corner of the photo. Click to Enlarge

The thermal image below is an equivalent view, and highlights the lava tube well.

This thermal image shows Puʻu ʻŌʻō (see visual photograph at left for equivalent view). Recently, the southeast and northeast spatter cones have produced small overflows out of the crater, shown clearly here by their warm temperatures. The vent for the Kahaualeʻa 2 flow is at the northeast spatter cone, and the lava tube supplying the Kahaualeʻa 2 flow is obvious as the line of elevated temperatures extending to the lower right corner of the image.  Click to Enlarge

This thermal image shows Puʻu ʻŌʻō (see visual photograph at left for equivalent view). Recently, the southeast and northeast spatter cones have produced small overflows out of the crater, shown clearly here by their warm temperatures. The vent for the Kahaualeʻa 2 flow is at the northeast spatter cone, and the lava tube supplying the Kahaualeʻa 2 flow is obvious as the line of elevated temperatures extending to the lower right corner of the image. Click to Enlarge

It was remarkably clear during Wednesday’s overflight of Kīlauea’s east rift zone. This photo is taken from Puʻu ʻŌʻō, and looks northwest. Mauna Kea is at the right, and Mauna Loa is at the left.

 In front of the summit of Mauna Loa, the degassing plume from the lava lake at Kīlauea's summit is rising vertically.  Click to Enlarge

In front of the summit of Mauna Loa, the degassing plume from the lava lake at Kīlauea’s summit is rising vertically. Click to Enlarge