News

The U.S. Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) sets the Volcano Alert Level and Aviation Color Code for volcanoes in Hawaii and...

Satellites have become one of the fundamental tools used to monitor active volcanoes. One of the most revolutionary advances has been the use of InSAR...

Overflight of Mauna Loa summit and rift zones and eruption monitoring overflight of Kīlauea summit.

On Saturday, November 5, 2022, the Hawaiian Volcano Observatory will participate in a Kealakekua community discussion about the status of Mauna Loa...

After damaging earthquakes, response and recovery takes place under the threat of aftershocks. USGS aftershock forecasts can help you understand what...

The last eruption of Mauna Loa occurred in 1984 and began in a style typical of the volcano. At 10:55 p.m. on March 24, 1984, the rate of earthquakes...

Photos and videos of the Hawaiian Volcano Observatory response to seismic unrest in American Samoa, recent activity on Kīlauea volcano, and fieldwork...

Covering over half of the Island of Hawai‘i, Mauna Loa is sometimes referred to as a “sleeping giant” because it hasn’t erupted in 38 years after...

Recent Sentinel-1 interferogram for the period from June 7 to July 13, 2022, covering the Island of Hawai‘i. 

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