After the mild stretch last week, winter is back with a vengeance.
Snow developed in the wee hours last night as low pressure worked up from Missouri into Illinois and then into Lower Michigan. Grand Marais reported 8 inches of new snow, Eben Junction 6.5, Herman 5.5, while the National Weather Service (NWS) had 4.9 as of 7 this morning (there likely was another inch or so after that). Other amounts included 4 inches at Manistique, 4.3 inches at Brampton in Delta County and 3.7 inches at Iron Mountain.
Now the cold is settling in ahead of another snow-maker expected during mid-week. Keep in mind that average high temperatures in mid-April range from the mid-to-upper 40s north to the low 50s in the south. Tomorrowâ??s high temperatures should only reach the 20s to around 30 in the far south. The record low maximum temperature at the NWS tomorrow is 27 degrees set back in 1983. There is a very good chance of that record falling. As for the record low, that is 16 degrees set in 1964. That record also has a good chance of being smashed.
As for that new snow-maker I alluded to above, the next trough is just pulling into the West Coast this evening. The system will advance to the east and induce low-pressure development in the northern Rockies Tuesday and then the northern and central Plains on Wednesday. Snow will develop over the Upper Mississippi Valley into western Wisconsin by Wednesday morning. This snow area will then expand and develop into Upper Michigan during the day Wednesday and continue into early Thursday. At this point, it looks like a general 4 to 8 inches of snow across most of Upper Michigan. The most should fall over the north and west where a Winter Storm Watch has been issued. Some locations may exceed 8 inches, especially in the higher elevations. The least snow should fall in the southeastern half of the U.P.