News

Frank A. Trusdell, a research geologist at the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO), recently received a Meritorious Service...

The Hawaiian Volcano Observatory conducted a geology monitoring overflight of Kīlauea summit on July 19, 2022.

What makes a volcano a volcano? This was the topic of a “Volcano Watch” article about 20 years ago. Recent questions from visitors suggest this...

Hawaiian Volcano Observatory Special Reports published in 1912, 1917, 1938, 1949, and 1950 have been added to the USGS Publications Warehouse and made...

Heraklion is the largest city on the island of Crete in Mediterranean Sea. The island isn’t volcanic, but other Greek islands dotting the sea surface...

June 13, 2022 — Mauna Loa summit sunset

The year 1916 not only marked the birth of Hawaiʻi Volcanoes National Park, but also is remembered for the eruption of the Honomalino flow from the...

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...