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USGS Hawaiian Volcano Observatory scientists conducted a monitoring overflight of Kīlauea summit on May 22, 2026. Forecast models suggest that episode...

The Yellowstone Volcano Observatory is turning 25 years old!  Surprisingly, the seeds for the observatory were planted at Lassen Volcanic National...

Episode 47 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea lasted for 9 hours, from 3:27 p.m. HST on May 14, 2026, until 12:27 a.m. HST...

Over the past month, the frequency of fountaining events at the summit of Kīlauea has increased to nearly one per week. This is reminiscent of the...

On May 12, 2026, the USGS Hawaiian Volcano Observatory conducted a helicopter overflight around Halema‘uma‘u crater and the eruptive vents at Kīlauea...

Mike Stickney was a one-person earthquake hazards show in Montana for 45 years and a valuable contributor to the Yellowstone Volcano Observatory.  His...

Episode 46 of lava fountaining in Halemaʻumaʻu at the summit of Kīlauea began at 8:17 a.m. HST on May 5, after one day of precursory activity. The...

Hydrothermal explosions are notoriously hard to predict.  But a geological thermometer based on hot spring chemistry might help.

We are used to seeing eruptions from the summit region of Kīlauea contained to the region that is referred to as Halemaʻumaʻu. Halemaʻumaʻu, home of...

Satellite images collected before and during the episodic lava fountaining eruption at the summit of Kīlauea show how the deposits from this eruption...