PAHOA, Hawaii (AP) — White plumes of acid and extremely fine shards of glass billowed into the sky over Hawaii as molten rock from Kilauea volcano poured into the ocean, creating yet another hazard from an eruption that began more than two weeks ago: A toxic steam cloud.
Authorities on Sunday warned the public to stay away the cloud that formed by a chemical reaction when lava touched seawater.
Further upslope, lava continued gushing out of large cracks in the ground in residential neighborhoods in a rural part of the Big Island. The molten rock made rivers that bisected forests and farms as it meandered toward the coast.

Hawaii's Kilauea Volcano erupts forcing evacuations
Lava flows into the ocean near Pahoa, Hawaii, Sunday, May 20, 2018. Kilauea volcano that is oozing, spewing and exploding on Hawaii's Big Island has gotten more hazardous in recent days, with rivers of molten rock pouring into the ocean Sunday and flying lava causing the first major injury. (AP Photo/Jae C. Hong)

Hawaii's Kilauea Volcano erupts forcing evacuations
FILE- In this Saturday, May 19, 2018, file photo released by the U.S. Geological Survey, lava emerges from fissures near Pahoa, Hawaii. The eruption of Mount Kilauea in Hawaii is a reminder to business owners, even those nowhere near any of the 169 volcanoes in the U.S., that they could be vulnerable to nature’s most destructive forces. And that they need to be sure they’re insured against disasters like tornadoes, earthquakes, hurricanes and flooding. (U.S. Geological Survey via AP, File)

Hawaii's Kilauea Volcano erupts forcing evacuations
PAHOA, HI - MAY 12: Lava flows at a lava fissure in the aftermath of eruptions from the Kilauea volcano on Hawaii's Big Island, on May 12, 2018 in Pahoa, Hawaii. The U.S. Geological Survey said a recent lowering of the lava lake at the volcano's Halemaumau crater Òhas raised the potential for explosive eruptionsÓ at the volcano. Authorities have confirmed the fissure is the 16th to open. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
Members of the media record a wall of lava entering the ocean near Pahoa, Hawaii, Sunday, May 20, 2018. Kilauea volcano, oozing, spewing and exploding on Hawaii's Big Island, has gotten more hazardous in recent days, with rivers of molten rock pouring into the ocean and flying lava causing the first major injury. (AP Photo/Jae C. Hong)

Hawaii's Kilauea Volcano erupts forcing evacuations
KAPOHO, HI - MAY 17: Lava is blurred as it erupts from a Kilauea volcano fissure, above treetops, on Hawaii's Big Island on May 17, 2018 in Kapoho, Hawaii. The U.S. Geological Survey said the volcano erupted explosively in the early morning hours today launching a plume about 30,000 feet into the sky. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
KAPOHO, HI - MAY 18: A lava fountain from a Kilauea volcano fissure erupts, while forming a new cone, on Hawaii's Big Island on May 18, 2018 in Kapoho, Hawaii. The U.S. Geological Survey said the volcano erupted explosively on May 17 launching a plume about 30,000 feet into the sky. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
A Leilani Estates evacuee tries out a dust mask at The Hub, as Vog levels were particularly high in the area that day in Pahoa, Hawaii on May 17, 2018.
Hawaii's Kilauea volcano erupted from its summit early May 17, 2018, shooting a huge plume of ash miles into the sky and prompting authorities to urge area residents to take cover.The Hawaii Volcano Observatory said the explosion within Kilauea's Halemaumau crater -- the biggest since the volcano became more active on May 3 -- had produced a volcanic cloud that reached as high as 30,000 feet (9,000 meters) and was drifting downwind to the northeast.
/ AFP PHOTO / Ronit FAHL

Hawaii's Kilauea Volcano erupts forcing evacuations
KAPOHO, HI - MAY 20: A lava fountain from a Kilauea volcano fissure erupts, while forming a new cone, on Hawaii's Big Island on May 20, 2018 in Kapoho, Hawaii. The U.S. Geological Survey said the volcano erupted explosively on May 17 launching a plume about 30,000 feet into the sky. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
KAPOHO, HI - MAY 20: Lava from a Kilauea volcano fissure erupts at dawn on Hawaii's Big Island on May 20, 2018 in Kapoho, Hawaii. The U.S. Geological Survey said the volcano erupted explosively on May 17 launching a plume about 30,000 feet into the sky. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
Plumes of steam rise as lava enters the ocean near Pahoa, Hawaii, Sunday, May 20, 2018. Kilauea volcano that is oozing, spewing and exploding on Hawaii's Big Island has gotten more hazardous in recent days, with rivers of molten rock pouring into the ocean Sunday and flying lava causing the first major injury. (AP Photo/Jae C. Hong)

Hawaii's Kilauea Volcano erupts forcing evacuations
PAHOA, HI - MAY 20: Steam plumes rise as lava enters the Pacific Ocean, after flowing to the water from a Kilauea volcano fissure, on Hawaii's Big Island on May 20, 2018 near Pahoa, Hawaii. Officials are concerned that 'laze', a dangerous product produced when hot lava hits cool ocean water, will affect residents. Laze, a word combination of lava and haze, contains hydrochloric acid steam along with volcanic glass particles. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
In this Saturday, May 19, 2018, photo released by the U.S. Geological Survey, lava flows from fissures near Pahoa, Hawaii. Kilauea volcano began erupting more than two weeks ago and has burned dozens of homes, forced people to flee and shot up plumes of steam from its summit that led officials to distribute face masks to protect against ash particles. (U.S. Geological Survey via AP)

Hawaii's Kilauea Volcano erupts forcing evacuations
PAHOA, HI - MAY 20: A man points as a steam plume rises while lava enters the Pacific Ocean, after flowing to the water from a Kilauea volcano fissure, on Hawaii's Big Island on May 20, 2018 near Pahoa, Hawaii. Officials are concerned that 'laze', a dangerous product produced when hot lava hits cool ocean water, will affect residents. Laze, a word combination of lava and haze, contains hydrochloric acid steam along with volcanic glass particles. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
KAPOHO, HI - MAY 19: A USGS (U.S. Geological Survey) geologist holds a collected lava rock to be analyzed from a recent Lava flow from a Kilauea volcano fissure on Hawaii's Big Island on May 19, 2018 in Kapoho, Hawaii. The U.S. Geological Survey said the volcano erupted explosively on May 17 launching a plume about 30,000 feet into the sky. Mario Tama/Getty Images/AFP

Hawaii's Kilauea Volcano erupts forcing evacuations
Steam rises as lava flows into the ocean near Pahoa, Hawaii, Sunday, May 20, 2018. Kilauea volcano that is oozing, spewing and exploding on Hawaii's Big Island has gotten more hazardous in recent days, with rivers of molten rock pouring into the ocean Sunday and flying lava causing the first major injury. (AP Photo/Jae C. Hong)

Hawaii's Kilauea Volcano erupts forcing evacuations
ADDS DATE MONDAY MAY 21-Lava explodes above a tree on Kilauea volcano, Sunday, May 20, 2018 near Pahoa, Hawaii. Officials say a small eruption has occurred at the Kilauea volcano summit, producing an ash plume that reached about 7,000 feet. The County of Hawaii issued a civil defense message early Monday, May 21, 2018, about the eruption and warning that the ash plume could affect surrounding areas. (AP Photo/Caleb Jones)
Story by the Associated Press. Photos from the Associated Press and AFP.