Officials warned people to stay away from the area.
Over the past two weeks, an estimated 1,700 residents have been evacuated from Leilani Estates and neighboring Lanipuna Estates subdivisions.
The bulletins also warned that reports of toxic sulfur dioxide gas being vented from various points around the volcano had tripled, urging residents to "take action necessary to limit further exposure".
The Big Island volcano released a small explosion at its summit just before midnight on Saturday, sending an ash cloud 3048 metres into the sky.
An aviation red alert was in effect due to risks ash could be carried into aircraft routes and damage jet engines.
It's been reported that lava spatter from one of the Kilauea volcano's struck a man and shattered his leg. At one point, it was about a mile upslope from his property in the coastal community of Kapoho.
"Everyone needs to stay clear of this area", the agency said.
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When the lava hits the water it results in a gas mixture made up of hydrochloric acid gas (HCl), steam and tiny volcanic glass particles. The interaction of lava and ocean water creates air pollution, as the heat from the lava boils the water dry, according to the U.S. Geological Survey. Acid rain resulting from the plume can also be unsafe due to its high acidity, which can be as corrosive as dilute battery acid, according to the United States Geological Survey. The glass was in the form of fine glass shards.
The "lava bomb hit his leg and he got injured", Magno told reporters.
Plumes of steam rise as lava enters the ocean near Pahoa, Hawaii, from the Kilauea volcano.
"We know people are going in there".
Authorities cautioned that wind patterns could change abruptly, spreading the laze to new areas.
The Coast Guard says it's enforcing a safety zone extending 984 feet (300 meters) around where the lava is entering the sea.
As the Earth keeps shaking, liquid fire keeps flowing. Four people have already been evacuated by helicopter. Experts estimate that much of the lava that has emerged thus far has been underground for decades, possibly dating back to a 1955 eruption. "The late-night lava flow forced Big Island police to shut down parts of the highway and implement roadblocks between Kamaili and Pohoiki roads", Hawaii News Now stated.
Earlier Saturday, Hawaii County Civil Defense asked residents between Kamaili Road and Pohoiki Road, located southwest of Leilani Estates, to decide whether they wanted to voluntarily leave the area.