Clouds halt radiational cooling; moderating temperatures Wednesday

An area of mid-level clouds moved across northern Minnesota overnight, putting a blanket on the cooling landscape.  Temperatures that were expected to drop below zero from International Falls to Virginia dipped only to around 10 degrees.

Infrared satellite
Infrared Satellite image 545 a.m. CST. Clouds are indicated in the faintly whiter color in northeast Minnesota. Image:NOAA/Intellicast.com

Some of the coldest temperatures in the upper Midwest this morning were observed in southwest Minnesota.  Pipestone checked in with a mere 1 degree at 6 a.m.

Afternoon sunshine will help to take the mercury in the 20s and lower 30s today.

Rap surface at 2 p.m. CST
Rapid Update Cycle model of surface temperatures and wind valid at 2 p.m. CST. Image:NOAA/College of DuPage.

Soil temperatures are responding to the recent cold snap as well as the shorter daylight hours. The profile this morning from the Waseca research and outreach center in southern Minnesota shows the shallowest 2 inches of soil falling below freezing.

soil temperature profile
Temperature timeline moves from left to right. The most recent observation from this morning shows the cooling which took place overnight on the most variable blue line. Image:Minnesota State Climate Office.

The national weather map indicates the high pressure over our region will move slowly east today, setting the stage for winds to become more from the southwest.

National Weather Map
Image:NOAA

Moderating temperatures on Wednesday afternoon will be accompanied by a bump up in the wind speed. Somewhat milder temperatures, slightly above the season normals, may be chilled by a breeze.

Wednesday high temperatures
Wednesday's high temperatures.
NWS Chanhassen weather picture
Graphic:National Weather Service Twin Cities.

A big precipitation-producing storm is not seen in the short term. I lose faith in the model data beyond five days as we transition between autumn and winter.

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