Several different weather systems that will impact you this week and into the weekend.

The first one is bringing a mix of freezing drizzle and very light snow across the area Wednesday morning. Watch for a light glaze of ice on untreated surfaces.

A quick-moving wave comes in Thursday afternoon and evening, bringing rain initially and perhaps a rain/snow mix that will change to snow showers as colder air moves in Thursday night.

One to 3 inches of snow are possible for counties north and east of Allegheny County,with little to no snow accumulation in our region until later Thursday night.

Finally, a larger storm system will move through the area over the weekend.

A changeover to snow is forecast for late Saturday night and into early Sunday morning as arctic air builds in.The Severe Weather Team 11 says that areas well north of Pittsburgh will most likely see more snow and could *possibly* see very heavy snow this weekend.

Keep in mind that this system has not even made its way onshore on the west coast yet, so model data will most likely change as they sample the storm over land.