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"Roughly 1,500 volcanoes are potentially active right now, meaning that they’ve erupted at some point in the last 10,000 years." "Right now, roughly a dozen volcanoes are erupting. In all likelihood, they're nothing to worry about — it's doubtful you’ve even heard of them. But every once in a while, there's bound to be a really big eruption. How its effects ripple around the world awaits to be seen." Source

Volcanic Disruptions - Local   Cascade Volcano Warnings                Volcanic Disruptions - Global   Scientists have linked historical political instability to a number of volcanic events, the latest involving an eruption in the Aleutian Islands.      Eruption of Alaska's Okmok volcano linked to period of extreme cold in ancient Rome (43 BCE)                West Coast Volcanoes   Hidden threats: these volcanoes near Vancouver are still considered dangerous (November 27, 2018)