Snow spread into the Ironwood area from Wisconsin during mid-morning. As of mid-afternoon, 2.4 inches of new snow had already accumulated there. The snow has spread slowly northeastward into much of western and central Upper Michigan during the afternoon.
The low over far southern Minnesota is forecast to weaken as it drifts east-northeastward into Wisconsin overnight. That means that the heaviest snows will likely fall over the far western U.P. Some spots on the Gogebic Range around Ironwood up into the Porcupine Mountains could approach a foot-and-a-half total accumulation by the time the snow winds down Thursday morning. Snow amounts will fall off the farther east one lives in the U.P. Over the rest of western Upper Michigan 6 to 12 inches are likely for areas around Ontonagon up through the Copper Country eastward through Lâ??Anse and Baraga and then southward through Iron County into northwestern portions of Dickinson County and western Marquette County. Around Marquette to Gwinn, up to 5 inches of snow could fall, while 3 to 5 inches are likely from Munising to Escanaba. Farther east, even less snow should fall. From Manistique to Newberry, 2 to as much as 4 inches of wet snow is likely with the heaviest snows in the northern and western portions of Luce and Schoolcraft Counties.
The system will work out of Wisconsin while weakening Thursday morning. Snow will likely continue over central into eastern portions of Upper Michigan until about mid-day. There may even be a little rain mixed in over southern portions as the system winds down.
After the low moves out, high pressure will build in on Friday. Clouds may hang on into at least a portion of day before substantial clearing takes place. Over the weekend, temperatures should warm closer to average for this time of the year (Average highs range from the upper 40s to lower 50s north to south.). However, a new, weaker, warmer disturbance could cause some rain which could be mixed with some snow over northern portions late Saturday into Saturday night.