A rich feed of moisture from the Gulf of Mexico will create rounds of heavy rain from the Mississippi Delta to New England over the next few days. Already this month, rainfall is well above average from the Tennessee Valley to the Appalachians.
Flood watches extend from the Great Lakes to the Red River of the South. Through Wednesday night, rainfall totals of 2″ to 6″ are possible ahead of a cold front from the Deep South to Lake Ontario.
A cold front is stretching out from the Mississippi Valley to New England. Humidity levels will climb ahead of the front as southerly winds push moisture into the region from the Gulf. The system will nudge slowly southeastward, creating several thunderstorms that will travel over the same areas. This will lead to the higher rainfall totals that could produce flooding.
For WeatherNation: Meteorologist Mace Michaels