An area of low pressure over southwest Minnesota this afternoon will continue to move toward the ENE tonight and will pass just east of central Lake Michigan by around 7 AM Thursday — This system will continue to produce an area of rain from east-central Minnesota, north to the Twin Ports, and east into northwest Wisconsin tonight, but this rain will diminish from NW-SE later this evening and during the overnight.
MRMS radar loop ending 4:40 PM, Wednesday, October 20, 2021 — Rain impacting portions of east-central Minnesota and northwest Wisconsin late this afternoon.
Here’s a look at our system on Goes-16 water vapor imagery today.
A classic looking low pressure system today.
A lot of dry air across northern Minnesota this afternoon with precipitable water of a quarter inch or less so we shouldn’t see any rain up in that area tonight. Most of the rain this evening should remain close to the Highway 2 corridor in northeast Minnesota, and also affecting all of northwestern Wisconsin.
18z NAM 3km model simulated radar forecast ending 7 AM Thursday — Rain across southern portions of the Northland will diminish from NW-SE later this evening and during the overnight.
Yeah it’s a lot cooler today compared to Tuesday, with temperatures some 15 to 25 degrees colder in the Northland at 3 PM today, Wednesday, compared to this same time Tuesday.
Looks like parts of the Northland will see their first snow flurries of the season on Friday, with parts of northern Minnesota and the Arrowhead having the greatest chances for seeing a few flakes, however, we’re not looking at any accumulating snow, yet.
Doesn’t look like will be seeing any snow in Duluth and Superior on Friday, but chances we see our first frost of the season even near Lake Superior look pretty high if not Friday morning, then Saturday morning, and if skies clear soon enough tonight, then there is even a chance for some patchy frost Thursday morning.
Note: The last time the Duluth Airport had a low of 32 degrees or colder was on May 29th, 2021 — We should see our first freeze of the season (temperature of 32 F) in Duluth over the next few mornings.
18z NAM 3km model simulated radar forecast valid 7 AM Friday to 7 PM Friday (snow in blue colors).
Another seasonably cool day on the way for Thursday, but we should see a bit more sun compared to what most of us saw today which was no sunshine at all, except in far northern Minnesota where there was some sun today.