Skip to main content
U.S. flag

An official website of the United States government

Volcano Alert Level for Mauna Loa Elevated from Normal to Advisory

Detailed Description

USGS Hawaiian Volcano Observatory scientists are closely monitoring recent signs of unrest on Mauna Loa, the largest active volcano on Earth. In this 1985 aerial photo, Mauna Loa looms above Kīlauea Volcano's summit caldera (left center) and nearly obscures Hualālai in the far distance (upper right). USGS photo.


Public Domain.