By Craig Koplien Special to OnMilwaukee.com Published Dec 10, 2010 at 5:31 PM

Unprecedented is a pretty strong word. Yet, I tend to think it applies to the dramatic shifts in the information meteorologists have been receiving this week. The multiple computer projections of the track of the storm system that will affect us tomorrow have shown unusually wild swings.

Compounding the trouble is that the multiple computer projections have been unusually divergent. That is, they haven't been agreeing with each other. Even less than 24 hours prior to the start of the precipitation, these projections failed to come to a consensus.

With that as background, here is my county-by-county snow forecast based on the data available mid-day on Friday:

  • Milwaukee county: 3-6 inches
  • Waukesha county: 3-6 inches
  • Ozaukee county: 4-8 inches
  • Racine county: 3-5 inches
  • Kenosha county: 2-4 inches
  • Washington county: 6-10 inches
  • Jefferson county: 4-8 inches
  • Sheboygan county: 6-12 inches
  • Dodge county: 6-10 inches
  • Fond du Lac county: 8-12 inches

Unless the storm doesn't take the track that the current, less than certain information is pointing to. Then, all bets are off.

There's some degree of uncertainty with every snowstorm. But the degree of uncertainty this time around is nearly unprecedented.

Craig Koplien Special to OnMilwaukee.com

Craig is a meteorologist who was born and raised in Pewaukee. After getting a degree in Meteorology from the University of Wisconsin-Madison, he worked over 20 years on TV and radio in Milwaukee, Madison, Omaha, Nebraska and Kansas City, Missouri.

Craig spends most of his time trying to keep up with his bride and their three teenage daughters. Any time left over is spent with his other beloveds, the Packers, Brewers and Badgers.