While temperatures will be warming into the 50’s by the end of the week, things will be feeling more like spring instead of mid December. However, is there a chance for some snow? The image above is of the 00z GFS 300mb wind speed. This shows where the jet stream resides this time of year. As you can see, a large trough will be digging in by Sunday morning. This is what will bring us our colder temperatures, snapping us back to normal after above normal temperatures on Saturday.
A low pressure system will be lifting to the northeast during the afternoon on Sunday and into Monday. Right now, the current GFS has it tracking right across central Iowa. The colder air is always on the northwest side of the low and this would place the snow across Nebraska, South Dakota and Minnesota, leaving much of Iowa in the warm sector, giving us the liquid precip.
Looking at the GFS 00Z snowfall output, the track of the low does reflect where the snow will fall. This 00Z run is not only showing snow, but a decent amount of it across Nebraska. Now since this is still a week out, a lot will change between now and then so this is in no way a forecast. However, this does bring some hope for us snow lovers.
Another thing of interest is the ECMWF is also showing a similar set up, however the system is further to the south, so this moves the band of snow to the south. Due to licensing we are not allowed to show the ECMWF, but we can tell you that it is not as bullish with snowfall totals. But with both the ECMWF and the GFS showing a similar set up, this is something that we will have to keep an eye on and see how the models continue to develop this system. If things set up in our favor, we might just get a chance a chance of snow early next week. For us snow lovers lets hope so!