Ironwood was buried under its heaviest calendar-day snowfall in the record books on December 16, 1920. Low pressure parked itself just northeast of the Upper Peninsula in mid-December 1920. The persistent northwesterly flow brought heavy lake-effect snow to the Gogebic Range to the tune of 24 inches (Image 1).
As we??ve seen recently, wind is the key to who gets the heaviest lake-effect snow. For instance farther east at Marquette, a location not favored by west-to northwest winds, there was not much snow. The official U.S. Weather Bureau total for the entire month only amounted to 14.9 inches. The average December snowfall in Marquette from 1910 to 1930 was 20.6 inches.
Some decent snows will fall off Lake Michigan tonight. From 2 to 4 inches are expected from near Manistique eastward toward the Straits. All other areas across the U.P. will have much lighter amounts.Some locations had a lot of snow over the weekend. Harvey, a suburb of Marquette had 8 inches. Our observer at Copper Harbor had 8.5 on Saturday and 10.5 on Sunday. The Copper Country is a winter wonderland this season.