The Pacific Northwest is expected to see up to seven inches of rain this week, as the eastern United States braces for arctic cold.

Storm-watching season has arrived in Tofino and Ucluelet, and the power of Mother Nature is on full display. During this unique time on B.C.’s West Coast, massive waves gain momentum as they roll in across the Pacific,

Fueling the storm will be a “very impressive” source of moisture from an atmospheric river, forecasters said. Flooding is forecast on more than a dozen rivers in Washington and Oregon.