A seismologist from Seattle discussed recent volcanic activity across the United States. Here's what you should know.

PULLMAN — Mount Rainier in my native Washington state is a stunning site. It’s a beautiful mountain, covered in snow and ice in both winter and summer. At 14,441 feet, its summit is worthy of ...

The United States Geological Survey (USGS) shows lava fountains shooting up high in the latest episode of an ongoing eruption ...

Recent volcanic activity across the Pacific Ring of Fire has raised alarms among scientists and volcanologists, with several volcanoes experiencing heightened eruptions and seismic tremors. The Ring ...

Today's mystery concerns geological formations along the slopes of Mount Rainier in Washington State. Mount Rainier is a volcano, so we aren't surprised to see hardened lava flows left over from ...

From Mount St Helens in Washington to the Mauna Loa in Hawaii, these structures have a complicated history of disaster and ...

A cloud formation seen over Washington's Mount Rainier led to speculation on social media about the active volcano venting. Park experts assured that it was not.

In the wake of the Mount St. Helens eruption, the US Geological Survey set up an lahar detection system at Mount Rainier in 1998, which since 2017 has been upgraded and expanded.

The lava that spews from the fiery rims of volcanoes originates deep in Earth’s crust, ... “I would regard Mt. Rainier as a much more serious short-term threat than Mt. Jefferson in Oregon, ...

The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years.

Mount Rainier's lava was only able to melt through the thinnest parts of the glacierthose parts that were over ridges and hilltop spines. When the glacier retreated, ...

Because of Mount Rainier’s great height, frequent small earthquakes, active hydrothermal system, and extensive mantle of 26 glaciers, an eruption here could not only release lava but also create ...