Two winter storm systems are on the way this week, both bringing the potential for accumulating snow and major travel problems. The first big one will hit Chicago on Wednesday. Widespread accumulating snow is expected in the late morning and lasting through the afternoon and evening.

The Oregonian/OregonLive has created a new interactive map for subscribers that provides an estimate of how much snow you can expect in specific locales across Oregon, Washington and the contiguous United States over the following three days.

Some in the Chicago area were waking up Tuesday morning to light flurries as a weak cold front passed through parts of Northeast Illinois, with a dusting or a coating of snow possible on area roadways,