An outbreak of widespread rain with thunderstorms, a few of them severe, will unfold eastward over the nation's mid-sector overnight through Sunday. A wide area from Missouri, Illinois and Kentucky south to the central Gulf Coast will have widespread rainfall of at least 1/2 to 1 inch by the evening on Monday. Amounts of 1-2 inches will be common over Louisiana, Mississippi, Arkansas, western Tennessee and Kentucky and parts of Illinois and Missouri.

Across middle Arkansas through western Tennessee, highest amounts will reach at least 4 inches.

While overall impact of the rain will be beneficial, the heavy downpours will trigger some urban flooding. In areas of highest rainfall, streams and even rivers may flood. There will also be unwelcome delays in field work for those parts of the Midwest, mostly over Illinois, Indiana, Missouri and Iowa, where the late winter and early spring has been unusually wet.

Story by AccuWeather.com Senior Meteorologist Jim Andrews.