Some chose to stay in the area, which now has no power, cell reception, landlines or county water, officials said.
On Sunday, a USGS field crew was in a helicopter when they noticed people on the ground needed help.
The lava flow, which has destroyed homes in the community of Kapoho and filled in an ocean bay known for snorkeling and tidal pools, is coming from a nearby fissure, which has spouted a fountain of lava that has reached as high as 250 feet in recent days.
Residents also have had to contend with poisonous gases given off by the lava, which can include laze - hydrochloric acid and volcanic glass particles. Any contact with laze plumes can cause serious irritation to the lungs, eyes and skin. Lava continues to pour into the ocean, enlarging the delta at the former Kapoho Bay site.
Several dead as Guatemala volcano erupts
David de Leon, spokesman for the disaster agency, said authorities had already evacuated about 300 people from nearby areas. A total of about a million people have been affected by the eruption, the Guatemalan government says.
The entire neighbourhood of Vacationland on Big Island has now been covered in lava.
"Right now, we don't have anything". She said it would be some time before precise losses were confirmed. "I wish I could just find out if I have a house". But with the latest releases of lava showing few signs of subsiding, residents are bracing for the possibility that the monthlong phase of the eruption could stretch for weeks or even months.
"USGS was on a routine overflight and saw people on the road in an area cut off by the lava". Police on Monday said a 62-year-old man sped through a checkpoint near an intersection where lava was approaching.
Trump Breaks Protocol, Sends Market Signal on Jobs Report Before Data Released
President Trump pumps his fist to the crowd as he arrives at Ellington Field Joint Reserve Base in Houston, Texas on May 31, 2018. May's jobs report is great news for America, but bad news for Democrats hoping to win election in November.
"What used to be the bay is now all lava bed, new land, nearly a mile out into the ocean", the civil defense spokesman said.
The monthlong eruption has claimed as much as a half of a forest reserve that's home to native birds and trees that have already been declining because of disease, state officials said.
A magnitude 5.6 natural disaster struck the summit of Hawaii's Kilauea volcano summit, sending a plume of ash and rock about 10,000 feet (3,048 meters) into the sky Wednesday.
SpaceX launches communications satellite
SES-12 will join SES's network of seven geostationary satellites and 16 MEO satellites across Asia-Pacific and the Middle East. SpaceX completed its 11th mission of the year when it sent an SES-12 communications satellite into space on June 4.