Cooler but still well above normal this week

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The first significant snow event of the season 

Snow falls in much of southern Minnesota through Wednesday morning. By midday, Wednesday a swath of 2 to 5 inches brackets Interstate 90 through towns like Worthington, Fairmont, Austin, Albert Lea, Rochester, and La Crosse, Wis. 

The heaviest snow zone may include northern Iowa towns like Decorah and Charles City. 

 have been expanded to cover most of southern Minnesota.

The southern Twin Cities rides the northern edge of the snow zone in the hours between midnight and 6 am. Little if any snow is expected in the north metro.

I keep looking for a swing back to average or above-average temperatures on the medium-range forecast maps. So far I don’t see it. 

The jet stream makes another polar plunge south next week. The upwind trajectories on the upper-air map below come straight out of the Arctic Circle by Monday.

Fresh snow cover can drove temperatures as much as 10 to 15 degrees colder on clear days and nights in Minnesota. The high albedo of fresh snow reflects as much as 90 percent of inbound short-wave solar radiation back into space before it can heat the air near us.

Weather and Climate News

Updraft® - Minnesota Weather News

Paul Huttner

Author

The first significant snow event of the season is in progress across southern Minnesota.


Mike McCleary | Bismarck Tribune via AP

Upper air forecast map for 6 pm November 11

Plowable snow targets southern Minnesota

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