Nation Hawaii’s Kilauea volcano erupts, alert level raised to ‘warning’ September 30, 2021September 30, 2021Ryan W. Miller, USA TODAYComments Off on Hawaii’s Kilauea volcano erupts, alert level raised to ‘warning’ Officials with the U.S. Geological Survey confirmed that an eruption has begun in Kilauea volcano's Halemaumau crater at the volcano's summit.