The US National Weather Service has issued a Winter Weather Advisory for most of Wisconsin including Door and Kewaunee counties until 6 pm Saturday.  Local law enforcement agencies are warning drivers to take extra time and precautions if travel is necessary this weekend.  Between four to seven inches of snow is expected through Saturday night.  Snow is expected to be moderate to heavy with blowing and drifting snow at times.  Stay tuned to DoorCountyDailyNews.com for any postponements or cancellations.