While the likelihood of Mount Spurr erupting soon has increased, it's not yet clear if the Yukon will be affected.

Researchers predict the most likely outcome of the unrest at Mt. Spurr is “one or more explosive events” that could last as long as a few hours and produce ash clouds carried for hundreds of miles.

Imagine a volcano so powerful that it screamed before it exploded! 🌋💥 That’s exactly what happened with Hunga Tonga-Hunga ...

The volcanoes featured in the NOVA program "Volcano's Deadly Warning"—Galeras, Nevado del Ruiz, Popocatepetl, and Mt. Redoubt—as well as many other famous volcanoes, including Mt. St. Helens ...