At left, a map of select recent volcanoes and volcanic areas in Canada volcano location data from: Global GIS: volcanoes of the world; volcano basic data. American Geological Institute. Public domain. Helens and Yellowstone. Many people may not realize it, but the same chain of volcanoes—the Cascade Volcanic Arc—that includes volcanoes such as Mount Rainier, Mount St.
So, while the volcano itself is in the US, were it to erupt, the area near Vancouver could still be affected by hazards like mudflows and ash fall. North of Vancouver, and unlike many of their cousins to the south that are conical stratovolcanoes, the Canadian volcanoes of the GVB are complex mountains composed of all sorts of volcanic features, many of which have been eroded by glaciers.
Helens, complete with an ash plume, a lava flow, and pyroclastic flows. A small seismic swarm occurred in — to the south of Mount Meager as well. Therefore, the possibility of an eruption, even a large explosive one, cannot be ruled out. Canada's most significant volcanic risk comes from explosive eruptions in adjacent Washington and Alaska.
Prevailing winds would blow the ash into Canada, as has happened in the past. With earthquakes, wildfires, tsunamis, floods and other natural hazards being risks and realities for British Columbians, the threat of a volcanic eruption might seem far down the list of things to worry about.
But one scientist with Natural Resources Canada says the province has many active volcanoes — and they're not monitored very closely. Monday marked the 40th anniversary of the eruption of Mount St. Helens in Washington, when black ash spewed over several U. That's not as frequent as in the U. There are several stratovolcanoes in southern B. The last eruption was years ago in northwest B.
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