(Portland, OR) -- An atmospheric river will hit the Pacific Northwest tomorrow. The National Weather Service is forecasting up to four inches of rain at the Coast and as much as three-and-a-half inches of rain in the Cascades. Winds at the coast could gust between 30 and 60 miles an hour. Inland, winds could gust 20 to 50 miles an hour. With leaves on trees, that could lead to power outages. Leaves in the streets could clog storm drains and cause localized street flooding.