Thursday, December 15, 2016

Some snow on the way for Friday-Saturday AM followed by more arctic air this weekend

/Issued 8:43 PM CST, Thursday, December 15, 2016/

Winter weather headline map from

Pink=Winter Storm Warning
Purple=Winter Weather Advisory

Note: Lake Effect Snow Warning is in effect from Friday afternoon through Saturday afternoon along the South Shore of Lake Superior in northwest Wisconsin including Douglas, Bayfield, Ashland, and Iron Counties.

For east central Minnesota and northwest Wisconsin:

-There could be a little snow late tonight&Friday morning, snow accumulation should stay under an inch.

-Snow will become more widespread and possibly a little heavier Friday afternoon or evening, continuing through late Friday night before tapering off Saturday morning. There is a winter weather advisory for east central Minnesota and for southern portions of northwest Wisconsin.

-Total snowfall accumulation by Saturday morning is forecast to range from 3" to 7" in east central Minnesota and northwest Wisconsin.

-North/northeast wind coming off Lake Superior should lead to lake enhanced snow Friday night and Saturday morning along the South Shore of Lake Superior especially east of the city of Superior with additional lake effect snow showers expected Saturday afternoon and Saturday night as winds turn to the N-NW.  Total snowfall accumulation east of Superior could range from 7"-10" by Saturday evening.

-For Duluth and Superior...Some snow is expected with total accumulation in the 2"-4" range.  Some light snow is possible at times on Friday with a better chance for accumulating snow coming Friday evening/overnight the way it looks now.

-Farther north including the Iron Range, Arrowhead and Borderland areas...Only light snow or flurries are expected for these areas Friday or Friday night with less than 1" of snow accumulation.

Lows the rest of tonight should hold pretty steady in the teens below to single digits above zero. Highs Friday will be in the single digits and teens.

Another shot of bitterly cold arctic air arrives Saturday and lingers through Sunday. Dangerously low wind chills are also expected over the weekend.

Synopsis: Low pressure moves out of the Rockies and into the central Plains on Friday, this low will then lift ENE into the southern/eastern Great Lakes on Saturday. Arctic high pressure builds into the northern Plains and Upper Midwest this weekend.