News

An earthquake swarm that started at Mount Rainier on July 8, 2025, is the largest ever recorded at the volcano.

In geology, even small layers can tell big stories.  But figuring out the origins of such small layers can be a challenge, requiring careful mapping...

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in Yellowstone National Park.  But...

One hundred years ago, on June 23, 1925, a mountainside in the Gros Ventre Range in northwest Wyoming collapsed, unleashing one of the largest...

Is it safe to drink treated water from rivers in Yellowstone National Park?  Well, that depends on whether there are any nearby thermal features.

YVO just released an updated version of its response plan for geological hazards in Yellowstone National Park.  The plan describes how Yellowstone...

Recently, something has been observed “dancing” above the active eruptive vents inside Halemaʻumaʻu…Hydrogen flames! Let’s take a look into what...

Continuous infrasound (low-frequency acoustic energy) monitoring is now established in Yellowstone.  And the method is detecting activity that goes...

YVO is pleased to announce the availability of a new static webcam that provides a current view of Black Diamond Pool in Biscuit Basin—site of a...

Witnessing a volcanic eruption is, for many, a once-in-a-lifetime experience. Hawaiʻi Volcanoes National Park welcomes well over a million visitors...