Major winter storm heads East with heavy snow and severe weather

ABC News senior meteorologist Rob Marciano tracks a powerful storm system moving East.
1:05 | 12/27/19

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Transcript for Major winter storm heads East with heavy snow and severe weather
Rob Marciano is here, and he's tracking the latest on that powerful storm making its way east. Good morning. Good morning, Tom. It is powerful, and also very compact. It will be expanding and this is this is I-29, some slick roads there. That's one of the many states that's under a winter storm watch or warnings, and it includes Minnesota, north Dakota, South Dakota, Nebraska under a warning and I wouldn't be surprised to see blizzard conditions, and we have wind advisories out for California because this low is still over Arizona. Probably see heavy rain today, and flash flooding with some thunderstorms, and some snow at the higher elevations. The San juans of southern Colorados, and a lot of record warmth coming out of this. In St. Louis, and Chicago, you'll see flight delays in Minneapolis as well, and this mess moves towards the east, probably some thunderstorms heading towards Nashville and Atlanta during the afternoon on Sunday. Cincinnati as well, and heavy rain eventually getting into the northeast. Kind of a mess here, Diane. Thanks, rob. That plane crash killing

This transcript has been automatically generated and may not be 100% accurate.

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