This weekend brings the second strong upper air trough into the Eastern United States and the associated clouds and threat for rain and thunderstorms. However this is going to be complicated by developments down in the tropics as disturbed weather in the Southwest Caribbean will have a say in how this all plays out. It could be nothing more than a simple cold front or it could be a cold front that slows to a crawl and low pressure develops on it, absorbs the tropical system in one form or another, and produces noreaster conditions here Sunday and Sunday night.
Everything for the moment screams problems but there are questions. The southern trough is going to lift northeastward. If that is the case then we will dealing with an intensifying storm system moving up the coast. But the short wave troughs to the north complicate matters. They could remain benign in which case the storm threat increases. However if the systems in the north become stronger and overwhelm the southern part of the jet stream it would suppress everything to the southeast and we would have a cold front come through with some showers and not much more...READ MORE AT http://www.meteorologistjoecioffi.com/index.php/2017/10/25/tropical-storm-noreaster-cold-front-puzzles-sunday-forecast/