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.