HVO reported that during 5-11 September weak lava activity at Kilauea?s Fissure 8 was characterized by occasional incandescence; during 9-10 September a small collapse pit formed and exposed hot material underneath.
Seismicity and ground deformation remain low at the summit, and aftershocks from the M 6.9 earthquake in early May were located along faults on the south flank.
The combined rate of sulfur dioxide emission from the summit and the LERZ (<1,000 tonnes/day) were lower than any time since late 2007.
A series of small collapses at Pu'u 'O'o Crater during 8-10 September generated visible brown plumes.
The Volcano Alert Level remained at Watch and the Aviation Color Code remained at Orange.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)