In the meantime, the scientists at the Cascades Volcano Observatory will keep watching, studying, and learning. And they say they will be ready the next time one of our volcanoes comes to life.

While rare, Redding does get earthquakes strong enough for us to feel. Here's why Shasta and Siskiyou counties and the north ...

Why do the Cascade volcanoes exist, anyway? The Cascade Subduction Zone, showing the location of the trench, the downgoing slab, the active volcanoes and some major earthquakes. NPS.

The Cascade volcanoes that run from northern California to southern British Columbia aren't exactly the most active volcanoes on Earth. While other places like Kamchatka in Russia and Indonesia tend ...

Hawaiian volcano: 26 homes destroyed; lava spewing 200 feet in the air With their towering, snow-capped peaks, the Cascade volcanoes are very different beasts from Hawaii's low-slung, shield ...

Jim Vallance a geologist at the Cascades Volcano Observatory, was a young field assistant on Mount St. Helens in the wake of the 1980 eruption. He remembers doing field work on St. Helens in 1979.

And all these volcanoes up and down the Cascades are being closely monitored by the United States Geological Survey (USGS). "They're not these quiet, stately monoliths just sitting there.

The Cascade volcanoes are driven ultimately by plate tectonics, the same force behind the impending Cascadia megaquake. MacGregor Campbell / OPB.

The Cascade volcanoes that run from northern California to southern British Columbia aren't exactly the most active volcanoes on Earth. While other places like Kamchatka in Russia and Indonesia tend ...

Cascade volcanos produce a thicker, more viscous type of lava than Hawaiian volcanoes, so it doesn’t run out as far. Also, very few people live on the flanks of our volcanoes.

The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it is far from the only volcano in the range.