That's producing laze, a unsafe mix of lava and haze, which is adding to the ongoing challenges.
Officials say a small eruption at the Kilauea volcano summit, produced an ash plume that reached about 7,000 feet.
Lava flows into the Pacific Ocean, southeast of Pahoa, during ongoing eruptions of the Kilauea Volcano in Hawaii, May 20, 2018.
First it was lava, then acid rain and vog.
Lava gushing out of cracks caused by Hawaii's Kilauea volcano over the weekend formed a two-story wall blocking parts of a highway crucial for residents to escape.as authorities warn them to steer clear of the plumes of acid and extremely fine shards of glass billowing into the sky. When molten lava hits sea water it can create noxious and hazy conditions.
The phenomenon sends hydrochloric acid and steam with fine glass particles into the air and can lead to lung damage and eye and skin irritation, another danger for residents, the Hawaii County Civil Defence agency said. (His was the first reported injury from this month's eruptions.) Now, as lava pours into the ocean, officials have begun issuing warnings about the resulting "laze", risky plumes of hydrochloric acid, steam, and glass particles.
People have been told to avoid the cloud that has been created as it can cause breathing and skin problems. It was just offshore and running parallel to the coast, said U.S. Geological Survey scientist Wendy Stovall.
The threat is also real for mariners. John Bannon of the U.S. Coast Guard in Honolulu said in a statement.
"This hot, corrosive gas mixture caused two deaths immediately adjacent to the coastal entry point in 2000, when seawater washed across recent and active lava flows".
The volcano has opened more than 20 vents, including four that have merged into one large crack. Lava is expected to begin sending fountains of lava up to 600 feet (183 meters) into the air, three times as high as before, she added. On top of the laze, sulfur dioxide emissions have tripped due to the increased eruptions and fissure leaks.
"A handful of old fissures have reactivated and joined together over the past few days", CNN correspondent Scott McLean said.
Cathy Santy, a guest services representative at outdoor tour company Hawaii Forest and Trail in in Kailua-Kona, said she and two other colleagues were anxious about the long-term effects of breathing sulfur dioxide, hydrogen sulfide and ash even before Kilauea began erupting May 3.
But lava overwhelmed Leilani Estates, the hardest-hit neighborhood, burning and burying more than a dozen homes. A magnitude 5.0 quake had just been recorded before the explosion on May 3, according to the Associated Press.