"Warning sirens sounded across the Big Island on Thursday as Hawaii County Civil Defense urged residents of Leilani Estates, in Puna, to flee the approaching lava streams. Lower Puna resident Ikaika Marzo told the Honolulu Star Advertiser that he saw 'fountains of lava' shooting 150 feet in the air and molten lava spreading down Mohala Street in Leilani Estates. 'It sounds like a jet engine. It's going hard,' he said. 'There are a lot of elderly people who need help to get their stuff out,' Marzo said. Thick smoke was also seen rising from the Puu Oo vent on Hawaii's Kilauea Volcano."