News

On January 7, 2025, the President announced the designation of the Sáttítla Highlands National Monument, a more than 200,000-acre area which...

This week, the California Volcano Observatory welcomes its newest Scientist-in-Charge, Phillip (Phil) Dawson!

Last week, a swarm of earthquakes happened below Long Valley's Mammoth Mountain, lasting a little over 12 hours. How do we decide whether or not it's...

We all know that volcanoes are figuratively cool, but sometimes it can be a challenge to convey the concept of just how hot they can get.

Volcanic hazards can be awe-inspiring displays of the Earth’s power, but each has the potential to threaten lives and infrastructure, as well as...

"An avalanche of mud...covering the countryside like a tidal wave."

Just as people have many ways to describe the world around them, scientists can also come up with multiple words for similar things. Take "ignimbrite"...

How did Paoha Island in the Mono Lake Volcanic Field get its name? It didn't just spring up from nowhere...but it is related to hot springs!

A short earthquake swarm in the southern part of the Lassen Volcanic Center reminds us that volcanoes can shake, rattle, and roll even when they're...

There are a couple of ways to make a volcano shorter: it could have an eruption or a debris avalanche, or it could simply erode over time. Or, it...