Flash Flood Threat in Deep South, Gulf Coast, Carolinas Through Tuesday

Additional heavy rain and flash flooding will target parts of the South, Gulf Coast, and Southeast Coast through Tuesday, including rain-weary parts of the Carolinas and Louisiana. 

First, a cold front is sagging slowly into the South, but will stall out over the eastern Gulf of Mexico and near the Southeast coast.

A strong subtropical jet stream will ride along that frontal boundary, inducing weak waves of surface low pressure along the front from the northern Gulf Coast to just off the coast of the Carolinas the next few days.

A deep fetch of moisture from the Bay of Campeche, western Caribbean Sea, and far eastern Pacific Ocean is expected to feed into the Gulf Coast and Southeast coast. A second plume of moisture from a tropical disturbance that will eventually track east of the Bahamas may also have some contribution to the Carolinas rain, but nothing like what we saw in early October.

Early Saturday, a stationary band of heavy rain produced rainfall rates over 3 inches per hour near Beaumont, Texas, leading to street flooding in the city of Central Gardens.

http://www.weather.com/storms/severe/news/flood-threat-south-gulf-coast-florida-carolinas-nov2015