Staffs from HVO and Hawaii Volcanoes National Park had already evacuated the area.
Hawaii's Kilauea volcano spewed ash almost six miles (9 km) into the sky on Thursday and scientists warned this could be the first in a string of more violent explosive eruptions with the next possibly occurring within hours.
Hawaii County Civil Defense issued the alert at 5:26 a.m., and warned that "the resulting ash plume will cover the surrounding area".
Scientists are predicting an eruption that shot ash almost 9 kilometres into the sky could be the first of a series of powerful explosions to rock Hawai'i's Kilauea volcano, reports SBS News.
The wind could carry Kilauea's ash plume as far as Hilo, the Big Island's largest city and a major tourism center, the County of Hawaii Civil Defense warned in an alert.
Then he goes to the Volcano Store, a local gathering spot, where he sat with friends and sipped coffee Thursday morning - a ritual not even Kilauea can be disturb also.
"This has relieved pressure temporarily", U.S. Geological Survey geologist Michelle Coombs told a news conference in Hilo.
"I don't think there is a big one that's coming", said University of Hawaii volcanologist Scott Rowland. "We all live in a circle around this volcano", said Benevides, 55.More news: Last Week Moss Bros Group plc (LON:MOSB) Ratings
Scientists said the eruption was the most powerful in recent days, though it probably lasted only a few minutes.
About 20 fissures opened in communities alongside the volcano's eastern slopes, prompting evacuations of almost 2,000 inhabitants and engulfing dozens of homes in lava. This may be a potential precursor of the Big One, when boulders are expected to fly.
The activity at Hawaii's Kilauea volcano is getting more interesting and more ominous.
The lava lake had drained from the summit crater a number of the months previous - the scenario now being repeated. "Such an eruption could happen suddenly and send volcanic ash 20,000 feet into the air, threatening communities for miles", the US Geological Survey said. One person was killed by falling debris from the massive eruption.
Its last explosive eruption took place in 1924. He explained from time to time he can feel the rumblings from the active volcano.
A new fissure cracked open Thursday on the Island of Hawai'i and others "reactivated" with new flows of oozing black lava, as noxious gas and ash became biggest immediate problem for residents around the Kilauea volcano.
Phreatic eruptions are "much more random", Poland said.