The National Weather Service has issued a Winter Weather Advisory which goes into effect at 3pm and is in effect until Midnight tonight for Plymouth and Woodbury counties. A Winter Weather Advisory is also in effect for the following counties until 9am Saturday morning, Monona, Harrison, Shelby, Pottawattamie, Mills, Montgomery, Fremont and Page. Snow will accumulate to between 3-5 inches in the advisory area, with lighter amounts off to the east. The snow will end by early Saturday morning.