Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment ...

Over the past century, technological advancements have vastly improved volcano monitoring. One key innovation was the ...

This photo was taken from a viewing area along the old Chain of Craters Road. (U.S. Geological Survey photo/E. Endo) While there were several summit eruptions at Kīlauea during the same decade ...

Mauna Loa is not erupting. Its USGS Volcano Alert Level is at NORMAL. No earthquakes were reported felt in the Hawaiian Islands during the past week. HVO continues to closely monitor Kilauea and Mauna ...

HVO continues to closely monitor Kilauea and Mauna Loa. Please visit HVO’s website for past Volcano Watch articles, Kilauea and Mauna Loa updates, volcano photos, maps, recent earthquake information, ...