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On September 8, a series of small collapses occurred within the Pu‘u ‘Ō‘ō crater throughout the day, with each producing a visible brown plume. The largest, shown in this webcam image, occurred at about 10:30 a.m. HST. The collapses generated small tilt offsets and seismic energy recorded by nearby geophysical instruments, but had no discernible effect on other parts of the rift zone.
On September 4-7, the Unmanned Aircraft Systems team flew several missions documenting changes within fissure 8 on Kīlauea's lower East Rift Zone. On September 4, lava erupted on the crater floor within the vent, building a small cone on the floor and creating a flow that did not extend beyond the vent walls. On September 5, gas bursts briefly lifted the crust over a small opening on the lava flow surface. On September 6, minor incandescence was visible overnight, but only fuming was observed during daylight hours. On September 7, activity was limited to fuming and slight deflation of the lava flow surface near the center of fissure 8.
