An east to west band of light snow accompanied an invasion of colder air into Minnesota overnight. Snowfall from Duluth to Alexandria southward tallied up to an inch in isolated locations. Most places accumulated a half inch or less, including the measurement at the Twin Cities International Airport.
The narrow band of light snow and remaining cloud cover will continue to push through the southeast corner of Minnesota this morning. Afternoon temperatures will hold close to seasonal normals. Colder air is poised to invade the Upper Midwest on the weekend and extend into Tuesday. Indeed, with the low sun angle and shortendaylight hours you’ll experience the chill of a Minnesota winter.
Meteorologists are still pondering the model data to determine the northward extent of a snow system coming out of the Colorado region on Friday. Southeast Minnesota, from Albert Lea to Rochester and Hastings looks to be the most likely area for the potential for accumulating snowfall late Friday night through Saturday.
Current thinking from the NOAA Prediction Center on the favored region to receive four inches or more of snow on Saturday.
Forecasting snow amounts is problematic due to the lack of a definitive center of low pressure. Here is the graphic of the track of the lowest pressure for the next couple of days. Note the weakness of the surface low as the system moves through Iowa.
Let’s see how this plays out in the next forty-eight hours. There is still plenty of time to refine the forecast before the first flakes fly.