Tropical moisture is set to stream across the Midwest and Eastern U.S. next week, leading to the most significant rainfall in a few weeks for many communities.

A large part of the Midwest and East has not experienced soaking rain since the start of October. That will change during the final days of October as tropical moisture enters the picture.

The exception to the lack of rain is the Carolinas where historic flooding ensued early in the month and additional rain about a week later led to more issues.

"[The ingredients in place next week] will be an upper-level storm system that is potent, a strong cold front and a connection with tropical moisture," AccuWeather Senior Meteorologist Dave Dombek said.

That moisture will be associated with the system that formed along the Texas coast Saturday night.
As the moisture is fed northward, the result will be rain spreading northward from the Deep South to the Midwest and East during late in the week. The rain will move in a general southwest-to-northeast fashion through Wednesday.

Cities in line for the rain next week include St. Louis, Chicago, Detroit, Nashville, Atlanta, Pittsburgh, Washington, D.C., Philadelphia and New York City. Eventually, the rain will also spread to Boston and Portland, Maine.

If enough cold air can be drawn into the backside of the storm, snow may also return to the Upper Midwest and northern Appalachians.