We continue to watch each model run closely as a few of them are showing signs that snow will be possible in some areas of the state, as early as by then end of this week. A dip in the jet stream on Friday will bring a trough through the state, and this will bring a chance of rain, and possibly some snow.
The best chance for precipitation will be from a line extending from Sioux City back down to Ottumwa and points to the northeast. Temperatures may be cold enough while this rain is falling that some of it may fall as snow across northeast Iowa. Not expecting much, but if you live in northeast Iowa, you might see snow mixing in Friday night into Saturday.
After this system moves out of the state Saturday, our next system worth watching will be on Sunday into Monday as another shortwave trough moves through the state.
The image on the left above is the current 12z model run of the GFS. Earlier, the image on the right (GFS 6z model run), was showing a good chance of accumulating snow across northern and northeast Iowa. Now, with the latest run, the model is no longer showing this. This has been the case with the past several runs. One run shows snow, the next, it doesn’t. This is to be expected as we are still a week away so a lot will continue to change between now and then, so do not get too wrapped up in the following images.
The next pair of images that I am showing, is the Canadian model. Also referred to as the GEM. Both images are accumulated snowfall totals through next Monday. The image on the left is the very latest 12z GEM run, while the image on the right is last nights 00z run. Both runs continue to show a chance at accumulating snow across northeast Iowa.
What does this all mean? While the models will continue to flip flop back and forth as we are still seven days away, it is to note that winter will be here before you know it. Even if it doesn’t snow, temperatures will continue to be on a downward trend.
Temperatures this weekend into early next week will only make it into the 40’s. Even cooler weather looks to be even possible by mid week next week. The next week to week and a half will definitely be worth watching. Continue to check back here for all the very latest details, and on our Facebook and Twitter pages.