There is some pretty hefty potential next week. I don't think we'll see one potent storm system...but there could be a firehose of moisture streaming up the east coast with a great deal of convergence and plenty of cold air nearby...some Pacific moisture gets injected, GoM, and even some Atlantic moisture. Big area of HP over the central U.S. with flow around providing llvl cold and huge HP in the Atlantic with the flow helping to aid in convergence.
A front stalls over us and numerous waves of low pressure traverse the front. the north probably wins out but dang...this is juicy (the euro has similarities too)