Volcano Watch

During the 1950s, a decade of major change in volcano monitoring, the USGS Hawaiian Volcano Observatory (HVO) was moving from the mechanical into the...

This week marks the one-year anniversary of when the June 27th lava flow, named for the date in 2014 that it began erupting from Pu‘u ‘Ō‘ō on Kīlauea...

Does lava continue to flow exactly as it did on land or does it behave differently after it enters the ocean?

In early 1918, visitors swarmed to Kīlauea Volcano to see a splendid show. The molten lake in Halema‘uma‘u had been rising and the pit was almost full...

As part of our monitoring of subsurface activity at Mauna Loa, we recently conducted a series of measurements of the force of gravity at various...

For 15 years, we've been on a journey of discovery through Kīlauea's volcanic past. Today we review what's been learned on that journey and how new...

In our June 25, 2015, “Volcano Watch,” we described how old maps and newspaper articles provide valuable insights into historic accounts of eruptions...

During the past 4 months, the June 27th lava flow, named for the date in 2014 that it began erupting from Pu‘u ‘Ō‘ō on Kīlauea Volcano's East Rift...

Ping! It's 2:12 a.m., and I (a USGS Hawaiian Volcano Observatory scientist) am still groggy as I read an automated text from HVO's computer system.

Dr. Jim Kauahikaua, a research geophysicist at the U.S. Geological Survey's Hawaiian Volcano Observatory, recently received a Citation for Meritorious...