AP

The county warned people not to touch the fibers, which can be harmful to eyes and lungs. And if it lands on windshields, wipers should not be used to clear it, the county said.

The Pacific Tsunami Warning Center on Oahu reported that a 4.4 magnitude earthquake shook the Hilina region of Kilauea, southwest of the estates, on Monday. Lava had oozed over two wells at the Puna geothermal power plant on Monday, but county officials said there was no release of any dangerous hydrogen sulfide gas after lava crept over the plugged wells.

Some feared a breach if lava penetrated the well shafts that tap steam and hot water to make electricity. Both wells were closed and secured in anticipation of the lava flow.

The plant, Puna Geothermal Venture, lies on the southeast flank of the volcano, nestled between residential neighborhoods. It was shut down shortly after Kilauea began spewing lava May 3.

The plant harnesses heat and steam from the Earth’s core to spin turbines to generate power. A flammable gas called pentane is used as part of the process, though officials earlier this month removed 50,000 gallons of the gas from the plant to reduce the chance of explosions. They also capped the 11 wells at the property to try to prevent a breach.