News

Mauna Loa and Kīlauea are the two most active volcanoes on the Island of Hawai‘i, and they have overlapping eruption histories. They are located in...

The original purpose of geologic mapping in Hawaiʻi was to understand the distribution of groundwater and soils to support agriculture. But as...

The ninth in a series of presentations by HVO staff that will be posted on our website throughout the month of January. These features are presented...

Mauna Loa is known for its effusive eruptions that produce spectacular lava flows. However, some of the volcanic products found on Mauna Loa are...

The seventh in a series of programs by HVO staff that will be posted on our website throughout the month of January. These programs are presented as...

The third in a series of recorded talks by HVO staff that will be posted on our website throughout the month of January. These talks are presented as...

HVO scientists collect high-precision Global Positioning System (GPS) data to assess hazards and understand evolving processes at Mauna Loa.

The most recent page in Mauna Loa’s eruptive history was written in 1984. The eruption began in March of 1984, about a decade after the 1975 summit...

Mauna Loa erupted forty-six years ago this week, on July 5–6, 1975, in a 20-hour event with vents confined to the summit region (the area above 3,660...

The journey from volcanic repose to a climactic eruption is like a mystery movie that keeps you at the edge of your seat. The story is filled with...