Mount Rainier, the active volcano towering above southwestern Washington state, started rumbling — very lightly — on Tuesday.

The lava that spews from the fiery rims of volcanoes ... “I would regard Mt. Rainier as a much more serious short-term threat than Mt. Jefferson in Oregon, which lacks a flow path ...

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 ...

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 ...

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. Yet ...

The snowcapped peak of Mount Rainier, which towers 2.7 miles above sea level in Washington\u00a0state, ... The sleeping giant's destructive potential lies not with fiery flows of lava, ...

However, lava flow or mudflow impacting the Seattle area would be very unlikely. But in cities closer to the foothills, ... And while Mount Rainier hasn't erupted in 1,000 years, ...

“The lava flows encounter those very steep slopes and make avalanches of hot rocks and gas that are hurtling down the mountain maybe 100 miles per hour or so,” Driedger says.

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. Yet ...