White plumes of acid and extremely fine shards of glass-like particles billowed into the sky over Hawaii as molten rock from Kilauea volcano poured into the ocean, creating yet another hazard for the island’s residents. Authorities on Sunday warned the public to stay away from the toxic steam cloud, which is formed by a chemical reaction when lava touches seawater. Further upslope, lava continued to gush out of large cracks in the ground that formed in residential neighborhoods in a rural part of the Big Island. The molten rock formed rivers that bisected forests and farms as it meandered toward the coast. The rate of sulfur dioxide gas shooting from the ground fissures tripled, leading Hawaii County to repeat warnings about air quality. At the volcanos summit, two explosive eruptions unleashed clouds of ash. Winds carried much of the ash toward the southwest. The lava haze, or "laze," from the plume spread as far as 15 miles (24 kilometers) west of where the lava met the ocean on the Big Islands southern coast. It was just offshore and running parallel to the coast, said US Geological Survey scientist Wendy Stovall. Scientists said the acid in the plume was about as corrosive as diluted battery acid. The glass was in the form of fine glass shards. Getting hit by it might feel like being sprinkled with glitter. The Coast Guard said it was enforcing a safety zone extending 984 feet (300 meters) around the ocean entry point. Coast Guard Lt. Cmdr. John Bannon said in a statement Sunday that "getting too close to the lava can result in serious injury or death." Gov. David Ige told reporters in Hilo that the state was monitoring the volcano and keeping people safe. On Saturday, the eruption claimed its first major injury. David Mace, a spokesman for the Federal Emergency Management Agency who was helping Hawaii County respond to the disaster, said a man was struck in the leg by a flying piece of lava. Kilauea, one of the worlds most active volcanoes, has burned some 40 structures, including two dozen homes, since it began erupting in peoples backyards in the Leilani Estates neighborhood on May 3. Some 2,000 people have evacuated their homes, including 300 who were staying in shelters.