The eruptions at Kilauea prompted closures at a national park and part of a highway because of falling glassy volcanic fragments, including ash.

HONOLULU — Hawaii officials are warning residents of the Big Island that the world’s largest active volcano, Mauna Loa, is sending signals that it may erupt. Scientists say an eruption isn’t imminent, ...

The production of maps to track the progress of ongoing eruptions has long been part of the USGS Hawaiian Volcano Observatory mission to inform the public about volcanic hazards in Hawaii. The methods ...

HILO, Hawaii — Hawaii officials are warning residents of the Big Island that the world’s largest active volcano, Mauna Loa, is sending signals that it may erupt. Scientists say an eruption isn’t ...