Lake effect snow continues tonight

4:50 PM Friday, January 14, 2022

Lake effect snow has been piling up along portions of the North Shore of Lake Superior today with a favorable setup in place to support this lake effect snow today.

The Duluth Airport has picked up 4.2″ of snow thru 4 PM today, but what is more astonishing is the snowfall ratio today. 0.04″ of liquid precipitation fluffed up to 4.2″ of snow at the Duluth Airport. The snow to liquid ratio was 105:1 today, wait, what?

Other snowfall reports from today, Friday, January 14, 2022

6.5″ near Two Harbors, MN
6.0″ near Palmers, MN
5.0″ near French River, MN
5.0″ at Silver Bay, MN

  • Winter Weather Advisory remains in effect until 6 AM Saturday including the cities of Silver Bay, Two Harbors, Duluth, Superior, South Range, Poplar, Brule, Port Wing, Herbster, Cornucopia, Bayfield and Washburn. IMPACTS — Slippery Road conditions due to accumulating snow. Gusty winds producing areas of blowing snow especially before Midnight tonight.

Here’s what I’m expecting for additional snowfall amounts through early Saturday morning. Keep in mind that with lake effect snow there may be localized higher amounts than the maximum amount that is shown on this map which is 4″.

Lake effect snow continues tonight near Lake Superior but the focus for this snow is expected to shift from the North Shore this evening to the South Shore by late tonight/early Saturday morning. Lake effect snow along the South Shore is forecast to taper off Saturday morning before 10 AM.

18z NAM 3km model simulated radar forecast ending Noon Saturday (snow in blue colors)

Advertisements

LAKE EFFECT SETUP

A long fetch NE flow coming down the length of Lake Superior today with a very cold air mass over the lake with 850mb temperatures of around -17C this afternoon.

An arctic air mass was located just north of Lake Superior today with subzero temperatures, this frigid air mass is moving SW over the relatively warmer waters of Lake Superior today.

The end result is this — Widespread Lake effect clouds and bands of lake effect snow moving SW down Lake Superior today. A NE wind picks up moisture and develops lake clouds and snow as it moves further down the lake which you can clearly see on this visible satellite loop from today, pretty cool!

Advertisements

A frigid night ahead with overnight lows tonight in the single digits below to around 20 below zero in northeast Minnesota and northwest Wisconsin.

Tim

Leave a Reply