For days computer models have been in general agreement about a major snowstorm for the coming weekend.

Often, they fall hopelessly out of agreement in the days leading up to a storm, but thtis time around, the disagreements were mostly minor.

Wednesday afternoon, the folks at the National Weather Service said they have seen enough, and have hoisted the season's first winter storm watch.

For the immediate Philadelphia area, it is calling for 12 to 16 inches of snow Friday night and Saturday into Saturday night.

It lists the precipitation probability at 100 percent, but says some mixing south and east of Philly might hold down accumulations.

We'll keep you apprised.