Lava from the Kilauea volcano covered at least one well Sunday at a geothermal power plant on the Big Island, according to a Hawaii County Civil Defense report.

White plumes of acid and extremely fine shards of glass billowed into the sky over Hawaii as molten rock poured into the ocean, creating yet another hazard: a toxic steam cloud.

Hawaii County Civil Defense officials urged residents in a community near Kilauea Volcano to be vigilant amid ongoing volcanic activity and hazardous emissions — and to be prepared to evacuate on short notice, CBS Honolulu affiliate KGMB reports.