Frigid temperatures this weekend prompt cold weather advisories

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Our deep freeze goes extra deep overnight. 

 cover all of Minnesota again into Wednesday morning. 

The minimum temperatures on cold clear winter mornings typically occur just after sunrise. That’s when the diurnal atmospheric cooling process stops, and the elevating sun begins to slightly warm the ground. 

It’s going to be interesting to see where we bottom out in the Twin Cities early Wednesday morning. As the center of arctic high pressure moves by, winds will shift into the south. If the winds increase enough before sunrise, they will mix up the lower levels of the atmosphere and stop temperatures from falling.

This process could prevent readings from getting to 18 below zero in the inner Twin Cities. If winds hold off, it could get that cold. Either way, it’s going to be dangerously cold once again.

Wind chill values will approach minus 40 degrees overnight. 

Southerly winds blow in milder, more tolerable (above zero) air Wednesday afternoon. 

But gusty winds will cause some blowing snow in open areas Wednesday. Gusts will hit 40 mph in open areas of southwest Minnesota. That will send our super dry arctic fluff airborne.

I had a blast talking with a bunch of fellow weather geeks last night on 

. Prominent Alabama meteorologist James Spann hosts this very informative and entertaining podcast. The panel contains amazing weather experts and enthusiasts from around the country.

We talked about some of the crazy weather we’ve seen in Minnesota and around the U.S. lately. And you’ll love the segment on rainbows with University of Hawaii professor Dr. Steven Businger.

Weather and Climate News

Updraft® - Minnesota Weather News

Paul Huttner

Author

How low will it go? The European model cranks out 18 below zero for the Twin Cities Wednesday morning. 

Wind chill warnings and advisories until 9 a.m.; fun talk on Weather Brains

Go Deeper.

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