The USGS said lava from Mount Kilauea is continuing to flow out fissure 8 into a channel that is “nearly full to the brim” in nearby Leilani Estates.
Residents on Big Island are on alert to evacuate the area immediately as lava spews out of over 20 fissures as it makes it way to the coastline.
The new thermal map shows that Fissure 8 remains active as lava enters the ocean at Kapoho Bay, with evidence suggesting that lava is sitting on the ocean floor.
When sea water and lava mix, it creates a toxic substance known as laze, a corrosive seawater plume laden with hydrochloric acid and fine volcanic particles that can irritate the skin, eyes, and lungs.
The volcano sent occasional columns of ash and volcanic gas into the atmosphere at between 10,000 ft (3,050m) and 30,000 ft (9,145m) above sea level.
USGS said: “The fountain at Fissure 8 remains active, with the lava flow entering the ocean at Kapoho Bay and Vacationland.
“Very small, weak lava flows have been active recently near the Fissure 18 area. The black and white area is the extent of the thermal map.
“Temperature in the thermal image is displayed as gray-scale values, with the brightest pixels indicating the hottest areas.
“The thermal map was constructed by stitching many overlapping oblique thermal images collected by a handheld thermal camera during a helicopter overflight of the flow field. The base is a copyrighted color satellite image (used with permission) provided by Digital Globe.
The map follows a warning sent on Tuesday, with the USGS saying: “Fissure 8 continues to fountain to heights of about 100 to 130 feet.
“Lava flows out of fissure 8 into a channel that is nearly full to the brim in the vicinity of the Leilani Estates subdivision.
“The lava travels about 8 miles to the ocean entry at Kapoho Bay and Vacationland.”
Lava has boiled away Hawaii’s largest freshwater lake in a matter of hours and sent a white plume high into the sky.
The molten rock entered Green Lake on Saturday and creative a massive plume of steam, causing the body of water to fizzle away, the USGS reported.
Big Island has been rocked by a series of eruptions caused by Kilauea with an earthquake and eruption taking place at exactly the same time on Wednesday June 6.
The earthquake took place at the summit of Mount Kilauea at 4.10pm local time and measured a magnitude of 5.6.
Kilauea – one of the most active volcanoes in the world – began erupting on May 3, destroying about 600 to 700 homes
In the last two weeks vigorous lava flows have poured downhill to the coast, blocking roads and destroying hundreds of homes in its path.