FDWxMan- nice job on pretty much nailing the totals for Des Moines, lots of 6-8 inch amounts I see measured around the metro.
For the longer range I think you here are heaping a bit too much praise though, in the short term he did a significantly better job than me. Longer range, I think I did a better job emphasizing there would be a decent storm for central Iowa.
There is a chance for light snow Monday, but really the main system/heavy snow, if it were to come together, would be Tuesday, especially noon and later Tue.
Still looks like it should mostly stay to the south as long as the arctic push doesn't get held up on Monday. The colder the better if you want to avoid this snow. I said at noon if the temps for Tuesday's forecast start to creep up from 10-12 degrees and get closer to 20 the next couple days, that would be a bad sign.
Storm did in fact come north, and was a significant problem for the area.
Now for my forecasting difficulties. I was definitely high overall(SE corner was about right, if slightly on the low end of my range). I see 3 things that made my forecast wrong in order.
1. WAA advection snows- these were consistently forecaster to be persistent and strong enough to drop 4-6 inches of snow over northern Iowa, more like 1-4 over southern portions. Very few places was this true, all the decent snow producing bands stayed well north with a few decent snows in far northern Iowa(Emmetsburg, Esterville). I know I had been predicted to get 4-7 with that first amount but ended up with about 2.
2. Winds- the winds did a much more effective job than I anticipated shattering the nice big, faster accumulating snowflakes. The bufkit-cobb projections had figured 15-20 to 1 snowfall ratios for the storm but this did not occur, looking at the CoCoRaHS liquid equivs it looks like most areas were closer to 12 or 13 to 1.
3.Track- was slightly southeast of where I thought. I had pegged the Euro as my model of choice, and whereas I would say it did the best long term job of tracking this storm, its track was a bit too far to the NW than what actually happened by 20-30 miles.