Excessive rain will threaten flash flooding as well as stream flooding into the day Monday over a swath of the nation`s mid-sector. The threatened corridor, part of a longer corridor of soaking rain reaching to the Great Lakes, will span central and northeastern Kansas, northwestern Missouri, southeastern Nebraska and much of Iowa. On the edge of the heaviest rain areas will be greater Kansas City and Omaha.

Rainfall in the most at-risk belt will exceed 4 inches in many areas with local amounts topping 6 inches. Such rainfall would trigger serious small stream flooding. Major rises of rivers would happen as well.

Story by AccuWeather.com Senior Meteorologist Jim Andrews.