Mauna Loa is erupting for the first time since 1984, prompting an ashfall advisory for Hawaii’s Big Island

The world’s largest active volcano, Mauna Loa, is erupting for the first time in nearly 40 years, sparking an ashfall advisory Monday for Hawaii’s Big Island and surrounding waters until 10 a.m. HT (3 p.m. ET).

​The world’s largest active volcano, Mauna Loa, is erupting for the first time in nearly 40 years, sparking an ashfall advisory Monday for Hawaii’s Big Island and surrounding waters until 10 a.m. HT (3 p.m. ET).