Winter made a huge comeback in late March 2003. The month began with severe winter cold. The first 10 days of the month came in almost 18 degrees below the long-term average at the National Weather Service (NWS) site near Negaunee. At mid-month, the pattern flipped and it appeared winter was over. Temperatures reached the 60s on a couple of days, there was a day-long rain and the winter snow cover melted. Then late in the month, the pattern flipped again.
A storm developed over the Plains on March 27 (Image 1 above) and headed northeastward. The system moved on just the right track (Image 2) to bring heavy snow to a good share of the Upper Peninsula from March 27-29. The NWS site developed another snow pack as 20.2 inches fell over the three days. On the west end, Ironwood was buried under 26.6 inches of snow. It then warmed to 44 degrees on April Fools Day, but then the temperature crashed again and a series of lows gave the entire U.P. an additional fresh blanket of snow followed by more record cold.
After our bout of beautiful early spring weather, winter will make a comeback to start the month of April. An arctic air mass will begin invading the U.P. on Sunday, with the core of the coldest air over us on April Fool??s Day. Lake-effect snow is likely along with some accumulation in the west to northwest-wind snow belts.