As arctic air surges into the central and eastern U.S. this weekend, accumulating snow is forecast from the western slopes of the central Appalachians into tonight, then across the northern Mid-Atlantic and southern New England early on Sunday. Lake-effect snows will be active as well. The precipitation map shows more active weather will be coming in for the Pacific Northwest and into northern California next week. | NOAA NWS Weather Prediction Center

A look at the nation's weather from NOAA's GOES West this morning shows an active weather pattern. An Atmospheric River will continue to impact the Pacific Northwest today, as a potent Alberta Clipper brings a shot of frigid air and snow to the Upper Midwest. #GOES18 What's the weather where you live? weather.gov | NOAA Satellite and Information Service

Aurora Tutorial | NOAA / NWS Space Weather Prediction Center

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