The "vog" the USGS references in the tweet is a type of volcanic smog from "gas, tiny particles and acidic droplets created when sulfur dioxide and other gases emitted from a volcano chemically interact with sunlight and atmospheric oxygen, moisture, and dust". The agency also noted that if you add sulfuric acid to sugar, "you get a pretty spectacular reaction".
Kilauea is the youngest and most active Hawaiian shield volcano, located on the southern part of the Island of Hawai'i, known as Big Island.
Lava had also covered two wells at a geothermal plant as of Sunday.
Fast-moving lava on Hawaii's Big Island prompted officials to shut down a major roadway Tuesday, county authorities said.
There continue to be frequent explosive eruptions at the summit of Kilauea, including one early Monday morning that sent plumes of ash 12,000 to 13,000 feet into the air.
"His only way out was through his back door and through the forest", said Talmadge Magno, Hawaii County Civil Defense administrator. Its operator, Israeli-controlled Ormat Technologies Inc, said it had not been able to assess the damage.
The plant, Puna Geothermal Venture, lies on the southeast flank of the volcano, nestled between residential neighborhoods.
While eruptions continue at the main crater, Kilauea's lava flows have also proven extremely risky for bystanders and residents who refused to evacuate.
So far, the eruptions have been responsible for one injury, but no deaths.
Hawaii Emergency Management Agency officials that said around 8:30 a.m. that lava had already crossed over the access road and that all equipment and vehicles were moved from the property and everyone was evacuated.
U.S. Marine Corps and National Guard helicopters are on standby for an air evacuation if fissure activity cuts off Highway 130, the last exit route for up to 1,000 coastal residents.
As of Friday, lava had destroyed 82 structures, including 37 homes.