Thursday 10 a.m.
A powerful storm system that turned parts of Chicago into a virtual lake this morning will move northeast to be centered north of Maine by Saturday morning. A warm front moving northward from Virginia today will ride northward ahead of the storm. A cold front extending from the low pressure center south to eastern Texas will march eastward to reach the Appalachians by late tomorrow, then off the Atlantic coast Saturday morning. A band of showers and thunderstorms with some heavy rain will accompany the front. Once it goes by, cooler and drier air will arrive at each location. It may get chilly enough for snow showers over the highest terrain of western Pennsylvania late tomorrow night and on Saturday. This video has more.
This video focuses on the hard-hit area around Chicago:
This radar picture from 11 a.m. EDT showed the rain area thinning near Chicago but thickening farther southwest. This storm system is not finished with Chicago.
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Tomorrow's storm to bring rain, but on Sunday, could it snow?