Below Mount Jefferson and McKenzie Pass is a massive storehouse of water three times the size of Lake Mead, say Oregon ...

Unlike old soldiers, old volcanoes seemingly don't even fade away, much less die, with researchers discovering magma chambers under cones previously classed as dormant after thousands of years of ...

A seismic survey challenges the long-standing belief that only active volcanoes have large magma bodies sitting beneath them.

What differentiates an active volcano from a dormant one?While visible lava at the surface is an obvious indicator of activity, the long-standing ...

Part of that ring (though, it’s really more a horseshoe) bisects the Pacific Northwest via the Cascade Range, and it’s here that one of the most active volcanoes of the world can be found.

Cornell University scientists studying six North American volcanoes within the Cascade Range found something totally unexpected underneath.

Cascade Caverns is a 125-million-year-old cave. It’s 65 feet deep and about a mile long, with a constant temperature of 60-63 ...

A combination of cold air and moisture off the ocean will provide the chance for low elevation snow multiple times next week. But will it stick?

It’s time to open up the voting for the next category in The Oregonian’s Readers Choice Awards: the best ski and snowboard ...

Wednesday will be a day to track as more moisture arrives into the region. A low system, that's been churning just offshore, ...

Winter weather warnings have been issued in Washington, Colorado, Idaho, California, Utah, Nevada, Oregon, Montana, Wyoming, ...