Rain snow mix possible this morning — click here for radar

What are the chances of two weekend snowstorms in a row?

Got your attention, didn’t I?

We are already tracking a potential for more snowfall! But before we get into that, be sure to check out the cold temperatures. That’s what we need to get through first. Click here to see how cold it will be Thursday and Friday.

Here’s the set up for the weekend.

accuweather1

First up, some of the raw computer models. Above is the solution from the National Weather Service’s GFS computer. It shows low pressure moving from Kansas into Michigan this weekend. Developing low pressure would be able to utilize more Gulf of Mexico moisture. Notice the closed circle that says “1008.” That’s the intensity of the low pressure system in millibars. A 1008-millibar-low-pressure isn’t all that strong. Mature winter storms and blizzards are on the order of 980-995.

ecmwg

A different model not only brings in moisture, but it increases temperatures. The blue line (labeled 540) is usually where the rain/snow line is. Above the line, snow. Below the line, rain. We all know that if we get above 32 degrees in the atmosphere, rain will fall from the clouds. The above scenario has rain falling across the Quad Cities on Sunday.

I’m not buying the rain scenario right now. That’s because the atmosphere across much of the Central U.S. will be quite chilly Wednesday through Friday. Getting warm air pumped into this system may be a little hard to do. For that reason, I believe there is a decent chance for some light accumulating snow both days this weekend. Here’s the rough estimate of snowfall accumulation from the GFS model. If the system comes in at this level of intensity, a few inches of snow looks likely. snowaccum
But we all know how you can’t trust weather models this far in advance, right? 😉

-Meteorologist Eric Sorensen