The most active of five volcanoes that together form Hawaii’s Big Island was erupting in “full swing” late on Sept. 29 after a series of earthquakes and ground swelling was detected earlier that same day, the U.S. Geological Survey (USGS) confirmed. Hawaii’s Kīlauea volcano is “in full swing,” the agency said on Twitter. “What was once a cooling lava lake is now a new fissure eruption!” The U.S. Geological Survey Hawaiian Volcano Observatory (HVO) said in an observatory that webcam images of the Halema’uma’u crater indicated that an eruption began on Sept. 29, at 3:42 p.m. local time. Pictures shared by the volcano agency showed lava fountains covering the floor of the crater and billowing clouds of volcanic gas rising into the air. The HVO has elevated  the alert level for Kīlauea from “WATCH” to “WARNING” and its aviation color code from “ORANGE” to “RED” as the  new eruption and associated hazards …